Mugen MBX-4, XR, RR Forum v2.0

[heliflip]

Does anyone know if there is an online instruction manual for the initial MBX-4?

I purchased a used MBX-4 and it did not come with a manual.

Does anyone have a copy I could have? I would be happy to pay for the shipping.

Thanks.

[jason102276]

at nitrohouse.com they have them
i just got one a month ago you get instructions for rr and xr and setup sheet

[Ho Hotwheels]

I just got an OS rz-vo1b and I want to know what would be the best tuned piped to get? I heard that the RB concept one-piece tuned pipe was pretty? Are there any other pipes that I should consider?


Thanks

[nitroblood]

Originally posted by chrisXXXT
Hi people I am looking at a mugen mbx4-rr and a kyosho 7.5 can you tell what the difference or between the two. Some of the guys at the track have mugen's and kyosho's it is hard to make up my mind. What do yall thank
Thanks for the help :confused:

Mate, I have had a 7.5 and I feel I have upgraded massively to a Mugen Works, in my own opinion the difference is like a Skoda and a Mercedes, the Skoda being the Kyosho of course. The quality of parts on the 7.5 was a lot less than I had hoped it would be, I started with an HPI Super Nitro but this was useless off road and I thought the HPI stuff was gash, the 7.5 was broken every time I took it out, allways throwing a suspension arm or at the worst the chassis bent causing the cluthcbell gear to explode as it meshed with the diff. Buy a Mugen first off and save your self the hassle of having to sell a 7.5 to get one.

[nitroblood]

Originally posted by heliflip
Does anyone know if there is an online instruction manual for the initial MBX-4?

I purchased a used MBX-4 and it did not come with a manual.

Does anyone have a copy I could have? I would be happy to pay for the shipping.

Thanks.

I have found a site that has a complete colour picture build of a works Mugen, I will post it as soon as I get my old PC fired up.

[Teammugen]

If anyone is looking to buy a Mugen XR buggy, checkout ebay auction # 1785398659, or you can email me at teammugen@aol.com

[RCfun]

I asked at a race what should my camber be, and a sponsered mugen driver said about 1 or 2 degrees positive camber in the front. I was wondering if any of y'all have had any experiance with this positive camber on the front. It seems to make my buggy more nimble. By the way the track was hard packed, with a very fine amount of dust on the surface. That was about 4 months ago, and i still have the same amount of positive camber in the front.

[DLF]

Hmmm...I'll have to admit that I've never found a reason to run positive camber. Although I'm interested in some replys on this question.

[RCfun]

Yes, me to, just looking at my buggy I could somewhat tell how I think it works, I just cant explain it. But let's say you have negative camber in the front, and your going into a flat sharp turn (say left), and your buggy sways or body rolls to the right and the negative camber would SEEM to maybe make it understeer becasue the bottom of the front right wheel is pointing away from the buggy, and the wheel/tire would try and continue to do that while you turn, causing it to understeer and not feel as twitchy. My guess would be that it's like ice skating, say you spread your legs apart (negative camber), and try and turn the shortest you can, you would probably feel mildly stable. then try doing a sharp turn on the ice with your legs about half-way spread apart as they were (positive camber), and turn, I would think if you were good enough, you be able to turn even sharper than before without as much stableness as before. Man that's a lot of typing.:eek: :)

[Racin Rev]

how much positive camber are these guys running?

[RCfun]

I would say anywhere from 1 to 2 positive camber.

[Racin Rev]

I would hazard a guess on this one that:

The track on which you run is primarily one of tight turns with only a few sweepers.

I would also guess that the surface is reasonably hard, or even blue groove.

What I think is going on is that they are compensating for the caster of the front end, which causes the chassis to develop negative camber on its own. In an attempt to keep the tires flat in the turns they are dialing out this camber. This could work as long as they are figuring in body roll into the picture.

how do they compare to other fast guys out there who are not running that set up? Particularly in the corners? feels fast isn't the same as fast.

I knew a guy who ran positive camber in the rear and the car handled like a hound dog. I would allow that in the front it might matter, though, none of the factory set up sheets show it that way.

[RCfun]

So your saying caster causes the chassis to develop negative camber while the buggy develops body roll?? I thought caster only moved the arms forward or back.
By the way, I think the caster helps in stableing the car handling wise. I've also heard that if you move your a-arms back by adjusting caster, it will make the car not as twitchy and less responsive, and if you move the arms up or torwards the front of the chassis, it will make the buggy more responsive. also by moving the arms back, your buggy will have less steering going into the turn, but more coming out of the turn. and by moving the arms forward, you will gain steering going into the turn, but you'll lose steering coming out of the turn. These are thing's i've heard of, i dont know if there true or not.

[Racin Rev]

That all sounds right but caster also effects camber in the front. Even at the minimum setting on a buggy camber would be effected. The only way that this would not happen is if you run 0 degrees caster, which would not be desirable. Test it out measure your camber with the wheels straight then turn the wheels all the way to the right, measure the camber of your front left wheel now. Note the difference, this is caused by castor. conversely, if you were to measure the right wheel turned this way you would discover a fair bit of positive camber, more than you set up for. All of these things matter when trying to find traction for your car. The desired outcome is to have as much tire on the track as you can, which, of course, is a compromise. Which wheel is most important? the outside one because it is the one which bears most of the cornering forces.

Body roll is a whole 'nether question. To get an idea of how roll effects your geometry take the springs off of your right side, then put spacers on the left until that side is totally jacked up. turn the front wheels to the left then see the difference in the camber. This will also very widely depending on how your roll center settings are set up. When doing this remember that you will probably not actually ever put enough force on the wheels while turning to push them in all the way (bumps and jumps excluded). But this will give you an idea of how it works. :)

[RCfun]

Cool, that's a neat method of finding how much body roll the vehicle has, but lol, I still don't see how caster affects camber, even with the wheel turning thing.

[RCfun]

Hey Racin Rev, I tried your steering method, and caster does affect camber when the wheels are turned from lock-to-lock.:)

[Racin Rev]

Car tuning is half science and half voodoo! This is because everything is connected to everything else. every time you change one thing it effects something else. That is why F-1 and NASCAR drivers are always talking about and working on chassis tuning. What works at one track will be horrible at another and often with no rhyme or reason. Sometimes it can vary from day to day, or stop to stop. if the circumfrence of a tire changes during a run it could completely change the way the car handles, good or bad. To get one thing you have to give something else up (a good analogy for life in general). You can dial a car that rides like a caddy but is slow as a stone, or you can have a rocket that is so skitzy that it is impossible to control lap after lap. I wonder what the guys running positive camber are getting and what they are giving up?

[jason102276]

castor absolutely affects camber when turning that is what the caster adjustment is all about more castor (arm moved toward rear of car) more camber gained while turning
running positive camber in front (top of wheel out) would almost have to make car unstable

[RCfun]

Interesting idea RacinRev, but... I don't know.:rolleyes:

[Racin Rev]

what is to not know? read any serious racing car tuning book and this is usually the first thing that they will say. There is a good one written by Carrol sombody who is an Aussie in the states. It is very informitive if dated. to get better than this you need to go to an engineering textbook (very expensive).

[TeamCarnage]

Tune to Win; by Carroll Smith. This book was recommended some time back. I wish I had read it a long time ago!!

[Racin Rev]

Yep, thats it. more stuff than you ever thought to ask. very well written too, not dry like many techicnal books.

[speedydave]

Just a little good news update:

Today I ran my buggy again, for the SECOND time ever(second time racing with the buggy). The first race, I only got one heat in becuase I snapped the receiver pack, so I went to the track this time praying the receiver wouldn't suffer the same fate.

I got to the track, warmed up for two tanks, and waited for my heat to come up. My heat came up, and I ran very well, probably crashing only once, and setting the TQ at the same time(I ended up qualifying first..this is Sportsman 1/8 though). So, the main rolls around, and I stayed up front most of the race, but had a few bad things happen to me, mainly a poor judgement call. I decided to come in for a put just to be sure I had enough fuel, which took just enough time that, in hindsight, probably lost me the race. I dropped to second, and fought to catch up, but couldn't in time, and finished 2nd, 3 seconds behind first place. Not too shabby for the second time on the track with the buggy, eh? :D Just thought I would share.. :)

[Dan H]

Sounds pretty fun!

I've been wondering whether I should race or not with my XR. Been racing touring cars for a while now though.

[speedydave]

Go for it! I've never raced onroad before, and I doubt I ever will, but I would imagine the speed of onroad would prepare you for racing 1/8 buggies. Go out and have some fun! :)

[Dingus]

Check this out,

Finally, MBX-4 parts cheap and available

http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=dmong2&include=0&since=-1&sort=3&rows=25

[jason102276]

i think offroad racing is more fun and my mbx4xr almost never breaks which makes for a really good time touring cars tend to break more easily so i can spend my time enjoying myself instead of wrenching or chasing setup

[Dingus]

Way more parts now.


http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=dmong2&include=0&since=-1&sort=3&rows=25

[RCfun]

RacinRev, I'll try and get that book that you suggested. I just printed out some blank setup sheets and I am filling them out right now from the race I went to. :)

[DLF]

I do know ultimatly what gearing up does, but I was just wondering if anyone with a V01B has tryed geared it up to see how the engine would react. I'm running the stock 13 tooth bell but have both a 14 and 15 tooth bell in my toolbox. i was considering throwing one on for this weekend's race to see what happened.

[DLF]

Actually, I stand corrected. I have a spare 13 and a 15. Not sure how I ended up with a 15 instead of a 14. However, if I do try it, it would be a 2 tooth change. I should see some difference.

[DLF]

It appears that the RR comes with a 14 tooth gear while the XR comes with a 13 tooth gear. Interesting. Well, anyone out there run an 01B on an RR?

[RCfun]

DLF I've never geared up on my buggy, and I really have'nt heard anyone else experimenting with it, but if the track is moslty sweepers or it has fast corners, then that might be the thing to do. But there should be able set-ups to do first before that...maybe.

I was looking at set-up sheets from some pro drivers, and I havent seen one setup with positive camber in the front, either it being a XX-4 or a 1/8 buggy...there bound to have run on a track like I have w/ the same conditions.

[DLF]

Anyone have a part number for the ORGINAL al rear tension rod for the XR? The manual shows it as C0192R but it doesn't show on Mugen's site or NationalRC.

[DLF]

No one knows? Then what options do I have for aftermarket rear tension rods for the XR? There's alot of them out there but most do not specify if they are for the XR or RR.

[Dingus]

I only show C0192R for th XR and C0185 for the RR.

I have new F/R al. tension rods from the XR Works kit for auction on eBay right now. It will end tomorrow or Wed.

item # 1790576047

or click

http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=dmong2&include=0&since=-1&sort=3&rows=25

to see all my other Mugen parts for auction.

[DLF]

Thanks Dingus. I see where you got your parts from.

However, I'm being told that that part may not be avaliable and the aftermarket one's that are avaliable are made for the RR. These parts can be modified to fit the XR. I'm sorry...but I find that very hard to believe. So, someone tell me a brand that they KNOW will fit an XR without modification!

[Dingus]

The XR actually comes with an RR Manual with an XR supplement. I think the parts are a direct fit either way. The RR tension rod is just a threaded linkage and the XR is just threaded so the length is not adjustable. Ad far as I know, they are totally interchangeable. ???


d

[DLF]

Correct Dingus. The RR is a steel threaded rod while the XR is a machined aluminum rod. While it is made of aluminum, it appears much beefier than the RR rod. I'd like to stay with the XR rod or, at least an aftermarket that would be as good or better.

I thought I recalled someone here having an aftermarket direct replacement for the XR.

[Dingus]

I have the XR rod and mounting assembly and hardware up for auction and it ends later today or tomorrow. I'm not aware of any aftermarket, but I can't imagine there isn't one somewhere.

[FlyinRazorback]

Hi, Where can I get a set of Mugen big bores for my Storm? Any places online?

[Vmax911]

You can get the mugen big bores from ace-hobbies.com, as well as a few other places. But I think Ace still has the rear set on sale, it's a special on their main page. Just don't forget the springs!

[h22x]

Hi, I just emailed Mugen and I was told that they will be releasing a new buggy in January.. anyone got anymore info on this? thx

[Dingus]

I will have a LOT of MBX-4 XR Works on sale again on eBay in the next couple of days. I will have a few sets of the big bore shocks. I can sell them outside of eBay if you want.

I heard there were problems with the new Mugen kit. Not sure what exactly, but it may not be coming out in Jan as predicted.

Here is a link to my auctions. I have only XXX-NT Drake parts now, but I will have Works parts very soon. Check my sold items, there were some people who got really great deals compared to retail even with the auctions. They all stat at $0.99.

http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=dmong2&include=0&since=-1&sort=3&rows=25

[ragamuffin]

Originally posted by DLF
It appears that the RR comes with a 14 tooth gear while the XR comes with a 13 tooth gear. Interesting. Well, anyone out there run an 01B on an RR?

My XR came with a 14t clutchbell stock. I had to buy an aftermarket 13t bell.

[Motorman007]

I was looking around I found these pic’s

The photo’s are not that great. But it is something


pic's of the new mugen

http://www.members.cox.net/ddibble/worldpics/6_pic.jpg




Front chassis of the prototype of the Mugen of Osaka; piastrino the modification
advanced position of the arms




http://www.members.cox.net/ddibble/worldpics/7_pic.jpg

The retrotreno of the prototype: it detaches the lack of the posterior bumper
and the lowering of the stabilizzatrice bar



http://www.members.cox.net/ddibble/worldpics/81_pic.jpg

General view: to famous eye the motor that has been advanced
regarding the XR perhaps still more of the RR... Noticed the package batteries from 6
elements....



http://www.members.cox.net/ddibble/worldpics/9_pic.jpg

General view: to famous eye the motor that has been advanced
regarding the XR perhaps still more of the RR... Noticed the package batteries from 6
elements....

[Dingus]

Well, for those who plan on keeping your old MBX, I have parts for auction on eBay again.

Nevermind the link (anti-capitalism???), you'll have to search by seller. My id is dmong2


I have more than what is listed if you don't like bidding. Email me and I'm sure we can work out a deal. All the parts I have are out of an MBX4-XR Works Kit.

dennis

dmong@austin.rr.com

[h22x]

anyone know if it is possible to upgrade a XR works to new buggy specs. thx.

[Ho Hotwheels]

I could be wrong but the suspension pieces seem to be the same as the XR and RR. It looks like the new mugen buggy uses new shock towers and a new chassis. There also seems to be new alluminium parts up front.

[RCfun]

Did anyone know that Mugen makes big bore shocks now? They're like the Kyosho shock shafts; 3.5 mm. Anyways, does anyone know how long these bigger shocks have been on the market? I got new shocks for my XR, and noticed that the shafts and the shock body were bigger, so I called Mugen and they overnighted new springs for my bigger shocks. Just curious since they're coming out with a new mugen this January; I guess the new buggy might use the bigger shocks.

[Racin Rev]

I am new to the 1/8 scale world and have a couple of questions.
First, How do I set up the brakes? there seems to be a variety of adjustments. Should I be playing with the length of the arms, the rubber bumpers, or the little timing knobs on the poles or what combination of the three? I am assuming that I want more braking power in the front.

[TalleyRacing2]

RCfun, the Mugen big bores have been out longer than the Kyoshos. Kyosho didn't go the full big bore route, they only went with bigger shafts. I bought mine back in May before I sold my XR.

Rev, you want more brake up front than in the rear, just as you mentioned. You'll have to play with them until you get them to your liking.

[speedydave]

I race on a relatively tight track(for 1/8's...it's more of a 1/10 track), so I set my brakes up with bias toward the rear so I can kick out the rear end a little bit and get around the turns better for me. To me, it's all about how you like to drive the buggy, and what feels best to you.

[RCfun]

Thank's for the answer TalleyRacing2.

[db_racing]

Does anyone know where I can get a set of big bore shock ends?
I just need the plastic ends, they are a little different than the stock. They have ovalled out and slop is felt at the end of travel.
I lost a spring retainer too when a shock shaft broke. I ended up putting a stock end on then I could use the stock retainer. I've looked at mugenracing.com and nothing is shown. what2donow?

[maddog0559]

db_racing, the part number for mugen is C0587 and it is called end parts. if I can figure out how to attach a file I will give you all the shock oops damper part numbers for the big bores.

[db_racing]

Thanks for the info maddog. Now where can I purchase these parts? I've looked around and cant find sites that have these available.

[maddog0559]

I just get my lhs to order them for me. They can get them to me by the end of the week if I let them know on Monday.

[DLF]

I would think that if Nitrohouse doesn't have it, no one would. Try them.

[DLF]

What ackerman do you guys run? Mine is set from the manual...using the two inner holes on the sterring horns. Some othr set-up sheets I've seen are using the two outside holes instead. Just wondering what difference it made.

[G24racer]

Does anyone know what this new car will be called? What is different on it from the curent car? I've seen a few differences in the pics posted above. anyone have the full scoop?

[speedydave]

Raced today...too tired to type out everything that happened today. But anyway, here's a pic of the buggy at the track, sittin on the ole starter box. :)

[Tee]

my car is fast. whoopee...

[JIMMYBANGBANG]

I NEED A PIVOT BALL FOR MY FRON SUSPENSION ON MY MUGEN MBX. XR WORKS. DOES ANY BODY KNOW WHERE CAN I GET THIS PART? TOWER DONT HAVE IT AND MY LOCAL HOBBY SHOP DOSENT EITHER! HELP...........:confused:

[RCfun]

www.nitrohouse.com :)

[Dingus]

I have pivot balls to sell or on auction.

email me at dmong@austin.rr.com

or search eBay by my seller name dmong2

dennis

[seraph]

Sorry for double post

[seraph]

Buggy that is. :p

I am going to buy a Mugen MBX-4 XR works. I am just waiting for them to make it to Action RC. This will be my first 1/8th scale R/C. I have raced 1/10th scale for a long time though. I plan on putting an RB WS7 with the 063 pipe in it. Action RC is going to throw in the "after market rear tension rod". Can anyone explain what this might be, and how much could it help?

Thanks
Seraph

[Ho Hotwheels]

Well I got a Ofna King starter box (the big blue one) and it seems that the wheels cannot touch the flywheel without rubbing against the sides of the chassis. What should I do? Should I just grind awaythe edge with a file or what?


Thanks

[RCfun]

Try and find a thing sheet of wood, and put it under the mounting blocks of the starter wheel. You may have to align it up a little more and tweak it, but it makes the flywheel touch the starter wheel.

[Ho Hotwheels]

Thanks for the advice. After a closer inspection it appears that I was completly wrong. (Nothing new for me) I thought the wheel was binding, but in actuality the starter box wheel was sitting too high and touching the flywheel before the top plate of the starter box could be supported by the chassis. I'm guessing since the starter motor didn't have enough torque to start a high compression .21 from a dead stop it seemed to me earlier like it was somehow binding. I used some foam spacers to to support the chassis and it everything works perfectly.

[p.n.e]

hey guys, i'm new to the 1/8 scene and im thinkin about getting a mugen kit. which one is the best to get? i have no idea how mugen catagorizes them. mbx rr? xr? 4xr? which one is the most competitive? the worst? thx!

[speedydave]

The MBX-4 RR is the older kit, the MBX-4 XR Works is the most recent, best kit currently available. However, Mugen is coming out with a new kit in a few months, so you may want to wait and see what they come up with.

[Racin Rev]

it is also rumored that associated and possibly Losi are coming out with one too. I would guess that Associated is closer due to their work on a T maxx style monster truck. I would switch tomarrow to an Associated.

[seraph]

I never buy the first generation of any RC kit. That is why I got the Mugen XR. Even when I buy AE, I buy Factory Team just to make sure that all the bugs have been figured out and fixed. It seems to me that most manufacturers use the public to do product testing. That is why you see "better" versions released about six months after the first kits hit the tracks. I am very interested in the new Mugen buggy. I won't buy one until some of the problems are found and fixed though. There will be problems, no kit is perfect. On top of waiting for fixes. I am not sure that the new buggy is any better than the current one. Just because it's new does not make it better. If you are not winning with the XR, I doubt that a new kit will somehow make you a better driver. I do agree that some kits seem to fit one driver's "style" better than another, but if you gave one of the top drivers any of the better kits, they are still going to win.

[fatslobloser1]

How can you tell if a Mugen has the overdrive? Would you have to disassemble the front diff and count the teeth? Someone was asking it at the track and I didnt know the answer. Outside of driving it is there any other way?

[seraph]

I remember reading something about the outdrive gears were a different color than the regular diff gears. I don't know which gear they were referring though. I am building an XR now, both front and rear diffs have identical gears.

[db_racing]

My overdrive ring gear is black and the ring gear I use for rear is silver in color. I raced the summer with no overdrive because thats how I bought it. Now racing at a small indoor track with a lot of tight turns I put the overdrive gear in. The place where I noticed it most was coming out of tight corners, the rearend wouldnt swing out when applying throttle as much as it did with same gears. I was told that the overdrive will push too much in sweeper type high speed turns. db

[mugenracer123]

i have an xr and i was thinking a bought putting some torcen diffs in it is it better to have a torcen in the front and middle or rear and middle or all the way around?

[rc10gtisthebest]

Originally posted by mugenracer123
i have an xr and i was thinking a bought putting some torcen diffs in it is it better to have a torcen in the front and middle or rear and middle or all the way around?

most people who run them have them in just the middle or with front. You can run them all the way around but that usually gets too expensive for 3 $1xx.00 diffs that only have mild improvements. When a nice new race engine isn't too much more.

[mugenracer123]

ya good point. im thinking of putting a new engine in mine im debating betwene the rossi black magic and the sirio i have a rossi in my tc3 and in my mrx3 and i love them

[mugenracer123]

HERE IS AN OLD PIC I WILL POST SOME NEW ONE ONICE I GET IT ALL FIXED UP

[mugenracer123]

.

[mugenracer123]

what do you guys think abought the rex one pice pipe

[speedydave]

Never used one, but I know people love the RB pipes, and they're essentially the same thing.

[mugenracer123]

ya i had a rb one pice polished in it but i sold it with my t-maxx so i will have to buy another one .

well rex is mayd by novarossi and so is a rb pipe and there crankcaseis. so i bet it will be just the same

[lbckevin]

hey guys,

I use the REX effra 9886 pipe...I think its great and offers good low end and good top end. I also put on the Waller power adapter. Its suppose to add more bottom end.

[mugenracer123]

i think i will try the sirio pipe it looks prity good

[crypt]

yes, tomorrow i´ll have one of this in my hands, i hope this car will be as strong as i heard, but... at the end i´ll have a mbx4xrworks yeeeeeeeeeeeeeeeeeeeepa!

[lbckevin]

Hello,

I was wondering if anyone had a setup for KZ Speedway for this buggy. I have a setup for Hemet ( The Dirt), but I am looking for a good setup for KZ's track. Thanks...


Hey guys post pics of your buggies!!!!!!!

[crypt]

yes, i have it, it´s so coooooool, i ike it, last night i did start to mount it, here is a pic

[speedydave]

http://www.radiocontrolzone.com/forums/attachment.php?s=&postid=834167

[crypt]

here is my painted body, i call it radioactive monster...

[philadater]

Check out the first pic of the New Mugen MBX5
Neo-Buggy (http://www.neo-buggy.net)

[Mr Mugen]

Thanks for the pic. I can't wait for better ones to start circulating the net! Here's a couple of pics of my two XR's.

[Mr Mugen]

This is my other XR that I converted into a racing truck, similar to a Dominator.

[speedydave]

How does the XR handle being a truck? I've always thought that would be a fun experiment.

[Mr Mugen]

Overall the truck handles very well and I am pleased with the outcome. Jumping is not that much different from my buggy, although with the larger tires I have to be a little bit more careful when applying gas/brake in the air. Turning is the one area that disappointed me, but I can't expect it to turn like my buggy does given the added width of the vehicle. When I race it I prefer the outside line to keep the trucks momentum going. I tried to keep a low profile with it to help reduce rolling. I plan on upgrading to a higher torque digital servo for the steering soon to help out. In terms of backyard bashing it has no equal.

[cbr74]

Where did you get the purple wheel nuts? Part #?

[Mr Mugen]

I bought them through my local hobby shop. They are made by Mugen, part #C0208-1. Here is a link to Nitro House with a pic and price.

http://www.nitrohouse.com/options,_mbx-4xr.htm

[Gmanlusk2004]

what's gonna be different on the new MBX 5? does anyone know? I got a storm and i wanted to know my competition :) and i was just wonderin.
L8r,
Garrett

[speedydave]

One of the big things I noticed from that pic was that I'm pretty sure the steering servo is laid down, like a gas truck, instead of standing up like usual. I've always wondered why they didn't do that sooner.

[Gmanlusk2004]

yeah that is a good idea. Does anyone know anything else?
L8r,
Garrett

[cbr74]

Mr. Mugen.. thanks for the info. Now to see if they'll fit my Lightning...

[crypt]

and maybe a thorsen diff? but really i can´t see big differences between xr and x5

[cbr74]

OK, can one of you Mugen guys do me a favor and measure the length of your radio tray posts? #C0359

Thanks

[philadater]

New mugen pics at Mugen MBX5 (http://www.mugenseiki.com/menueefi.htm)

Courtesy of Neo-Buggy (http://www.neo-buggy)

[speedydave]

Sah-weeeeet. :)

[Mr Mugen]

CBR74

They measure out to be 1 5/32" in length or 29 1/2mm. Also, I believe you won't have any problem with your new hubs. All new 1/8 buggies come with the standard 17mm hubs so you should be fine.

[cbr74]

hmm... 29 1/2 mm makes them about 2.5mm longer than what I need.

The hubs all look the same, but the Lightning uses thicker cross pins than Ofna (don't know what Mugen uses)

[lbckevin]

Hey guys ....


Anyone have an actual pic of the new X5 buggy?

[wardog]

hello ppl.
i've got an mbx4 and my rear wing is pretty messed up.do u know if there are any other wings that will fit in directly to my car?the local dealer here in greece has only white rear wing.what about ofna rear wings?does anyone know if these wings will fit in?
thanx in advance

[needinpower]

I'm not sure how to post pics, but i'll try..

Didn't work

:confused: :confused: :confused:

[needinpower]

Try again

[needinpower]

another

[needinpower]

getting carried away

[Dingus]

I'm not sure, but I think he was lookin' for actual photos. These are cool and all, but they are CAD drawings. The only other photo I've seen is of a blurry box cover.

[needinpower]

last one....I promise:rolleyes:

[needinpower]

Ooops:o :o :o
I guess i just wasted alot of time and made myself look stupid. I'll go away now and hide under a rock.

[Dingus]

Don't be so hard on yourself. These needed to be posted anyway!

[guswiththemugen]

That thing looks awsome! If the final product is anything like that i must have one.I never thought i would see a car that would excite me as much as my XR Works.......the time has come!

[cbr74]

I need to ask another favor of the Mugen guys... if anybody has center diff mounts laying around... could you take some measurements for me? I'm hoping for compatibiltiy with the Lightning so I can use the sweet purple aluminum center diff mounts. (C0186)

If possible I need... height, height to center of bearings, diameter of brake cam post holes, distance between mounting holes and what size screws they use, distance between brake pad retainer bolt holes.

Thanks.

[rc4me2]

anyone know where you can still get this kit (and a good deal on it)???

and when is the mbx5 due to arrive?

thanks

and if anyone knows where to get the mbx4 RR, that would be great too

[cbr74]

I don't know about stock status, but Ace shows them for $430.
Ace (http://www.ace-hobbies.com/)

[lbckevin]

rc4me2,

You can get the kit and lots of spare parts on ebay for $399. Check it out.

[rc4me2]

are there new kits on ebay?

if so, please direct me towards a link

part of the joy in r/c (to me) is building the kits w/ my dad...it started as just a hobby, and gradually moved into a competitive sport for us, so i kinda look for new kits

thanks

[lbckevin]

rc4me2,

Yes they are new kits....I tried to post a link and this message board does not allow it. GO to Ebay.com and type in "mugen xr" in the search box. You will see 4 kits new in box with the carrying bag included. There are 2 for $399 and a few for $430. I bought mine for $399 from a seller named dmong12 a month ago

Good Luck.

[Dingus]

Hi guys,

I am dmong2 on eBay, I only sell parts, but they are new and from the XR kit. Haven't sold a complete kit, but they pop up occasionally.

I also sell parts direct (outside of eBay). Email me if you need anything, I sell for WAY less than retail.

dennis

[guswiththemugen]

Loving my new camera!

[guswiththemugen]

and....

[DLF]

Me too...but mine's not as clean...

[guswiththemugen]

Heres a picture from the build, doesnt get any cleaner!

[guswiththemugen]

I posted a couple of pics. of my Ofna Dominator in that forum aswell if anyones intrested. Heaps of sun light, good pictures, but resized....A LOT!

[guswiththemugen]

Last one, i promise.;)

[FlyinRazorback]

Hi,
I'm building the XR now and I have a question about the diffs. Which side do the shims go on and how many on each side?
Thanks

[poipoundah]

Hi ppl!!

I need some help on starting my xr buggy, it seems that the hole where the starting wheel contacts the flywheel is too small! The starting wheel hardly touches the flywheel!! I have a Ofna starter box for 1/8 cars. Do I need to enlarge the hole in the chassis, or find a smaller starter wheel? Please help, I can't even break in my engine!!:mad: :confused: :( Any info would be appreciated! Thanks in advance!!:D

[guswiththemugen]

I used a dremmel drill to put a 45% angle on the edges of the whole in the chassie, (a grinding type tip) and this fixed my problem. I use the same box and had the same problem. I also drilled new holes in the lid of the box to better position the lugs that hold the buggy in place, and repositioned the wheel as best i could. It works fine now, but i have burnt out one of the engines, ( this box has two) which is a pain but that was from breaking in a new Novarossi, heaps of compression! I wouldnt make the hole in the chassie bigger, no need.

[poipoundah]

Hey gus!

Thanks for the tip! I'll try it today and see what happens!:cool:

[crypt]

es the flywheel hole is too small, so you have to enlarge it to the outside of the car, about 1cm.

[needinpower]

I have just moved to Mexico and want to race here but it seems that Mugen is unheard of in Mexico. Everyone is running the KEII (and I mean EVERYONE). I was initially tempted to buy the same because of parts availability but I kinda like being the underdog. Herein lies my problem. I need to know what the common breakages are on these cars in race conditions so I can stock-up on spares. What gears wear, which suspension arms break more frequently etc. Remember, I will have NO support. Mail order takes between 2 - 6 weeks in this place which can be frustrating and I don't want to miss a race because of a $10 piece of plastic.
I plan on flying to the US in about 3 weeks to buy the MBX4 kit (or maybe wait for the MBX5)
I would like to get some tips regarding spares, from people that race these things.

Please help me kick some Kyosho butt. (no offense to those who drive Kyosho, unless you race in Mexico)

Cameron

[DLF]

Well, personally, the most common breaking part for me is front upper suspension arms...C0154 in your Mugen manual. Also, all the lower arms will need replacing eventually. Wtih mine, I usually have to replace mine every 6 months or so...as they tend to warp in time. Especially the lower fronts. Other than that, all I can think of is clutch bearings. The car's pretty darn tough.

[needinpower]

Thanks for the reply DLF.
If it's regular maintenance stuff I can just order them when i know the parts are on their way out. I guess just the front uppers, some clutch bearings and shoes and an extra set of gears all round.

[450HPMALIBU]

Originally posted by FlyinRazorback
Hi,
I'm building the XR now and I have a question about the diffs. Which side do the shims go on and how many on each side?
Thanks
The shim are used set the backlash. Shims on gear side move the gear closer to the pinion (less backlash) I used two on gear side on the front diff and one on each side on the rear. the diff must not move in the housing. It may take two or three depending on play.

[guswiththemugen]

I have an MSN comunity called "R/C nitro cars", there are a heap of pics. from everywhere(some from hear so you may see your car!). It is basically a picture based site at the moment but id like to turn it into an active forum. (There is a board to post on).There are currently about 15 members, but i need more to get the posts happening. Anything goes! Im not about to ban people for speaking there mind. Anyway, its not much at the moment but could be a good option for people to post on. Heaps of XR pics. too. Thanks.

[YZ167]

I'm looking foward to buying a new kit this summer with my tax return money =) I'm thinking that Mugen X5 would be a nice one to get a hold of when it comes out (the XR works looks entertaining since you can get them around 400 now, save 200 compared to the X5 dont ya think) Those 1/8 scale buggys look gnarly though, almost bullet proof in videos. The X5 is probably going to have a lot of refined qualitys compared to the Xr since the Xr and rr are almost the same thing. Think the X5 will be a lot better and beat the hell out of the kyosho kanai. One thing is for sure I wont pay 800 bucks for a kit only,lol

Basically what do you think is a better deal...waiting got the new X5 or buying a Xr works. I'm not planning on buying a kit until summer when X5 comes out anyways. You guys think the X5 will cost around 600? Maybe it would be better getting the Xr but the only thing is I dont like all the pruple,lol. Any one know what color the X5 is going to be?
Thanks for all your adice.
Keep this board alive why arent you guys sharing all the secret tips. anyone get the mugen Mst 1?

[guswiththemugen]

The mbx-5 isnt far off release so id wait till then. Im shure it will be expensive but im also shure it will be a better buggy than anything else currently on the market. If you want to save money, definately get the XR, it is a fair bit different to the RR, may look similar but its alot better to drive, turns, jumps and generally handles better. Untill the MBX-5 is released, the XR in my opinion is the best overall buggy on the market. It is cheaper in price compared to the kanai yet performs equally aswell and i think it is a stronger buggy than the Kyosho.

[YZ167]

Anything bad about the Mugen buggies? Any one broke any parts or needed to upgrade anything? does the Xr pretty much come with all the goodies you would want with the kit?
Thanks,
Jacob

[speedydave]

Mugen buggies are EXTREMELY durable. The weak point seems to be the shock shafts. I snapped both rears on my XR the first time out with it(landed horribly off the triple), but since then, I haven't broken any. I bought some used Big Bores, and, though I have only used them once, i know they will be tons more durable than the stock shafts. If the X5 really is going to be $200 more than the XR is now, it's still worth the extra money just in that you will pay about $125-150 for a set of big bores for the XR, but the X5 will come with them, so that's quite a bit right there, plus, you get the newest design out. If you're going to be racing and can wait, go for the X5.

[YZ167]

Yeah, sounds awsome, I'll be getting the X5 it sounds like. When are we expecting it? You think it will cost 600 or 500?
Thanks

[speedydave]

Just so I don't give you any false hopes(apparenly I'm not giving you any hopes at all), I really don't know. I've heard varying answers about when it will be available, and how much it is really depends on Mugen's list price, and where you buy it. If it's anything like the XR though, it shouldnt be more than $550-ish, I think(I hope...). The most definite thing I can tell you is just to wait and see. :(

[DLF]

Does anyone have or know where I can find a parts list for the big bores shocks? I need a front shock shaft and don't have a clue as to where to find the part number. It does not appear to be listed on the website. Thanks.

[jasonrcfreak]

Hey guys! I've got an MBX-4RR that I've put quite a few hop ups on. I recently put a new Paris-Picco XP ProBV in it and it ROCKS!! I've gotten 1st place in the first two races I've run it in. :)

[jasonrcfreak]

Here's another look at it. :D

[jasonrcfreak]

Here's the hardware I've won so far.......NOT pictured is another 1st Place trophy that I won yesterday. :D

[Rog]

jasonrcfreak - nice buggy. do you mind sharing your setup and the type of track you run on?

[Rog]

Anyone know where to get torsen diffs for cheap? Or will some Ofna torsens work on the XR?

[speedydave]

Jason, are those Pro-Line Mugshots on your buggy? if so, how do they hook up, and what surface are you running on? I heard they hook up quite well on hard packed surfaces(which makes no sense to me, but oh well!). Thanks! :)

[jasonrcfreak]

Rog- I pretty much run the set up right outta the manual. Diff oil- 3,000 front, 7,000 middle, and 1,000 in the rear. 40 wt. shock oil in the front, 35 wt. in the rear. Shock positions are in whatever is in the manual. I basically know squat about set ups! I am running the big bore shocks with the blue springs front and rear.
Our track is pretty small and tight. No long straights.

The Mugshots seem to hook up well on a variety of surfaces. I've used Crime-Fighters and Dirty Harry's and I like the Mugshots better for the track I run on. Our track is usually kinda dry and loose unless the owner waters the crap out of it. :D

[DLF]

Has anyone tried these in racing?

Mugen says the following:
The position of pivot ball has been changed but angle of king pin is same as C0158. It is more easy to drive especially there is a lot of gap and rough surface in track and feels more sticky in front and faithful in steering. You can easily control the direction of car from corner to end of corner and corner with gap too.

[needinpower]

I just love Japanese to English translations

[DLF]

Tell me about it!

The thing that gets me is that, according to the translation, it causes the car to react less on rough surface (less bump-steer effect?) and has less off throttle push and yet will tend to not hook on throttle. I don't know about the rest of you, but that sounds almost too good to be true!

[philadater]

Get all your latest 1:8 Offroad news at Neo-Buggy (http://www.neo-buggy.net)

New site layout and Forum !

[rccardude04]

DLF: do you have a part number from mugen for those? maybe a retail price if they have one listed... heck just a link lol.
also if i reduce front caster (move the little clip on spacer thingies to the rear of the front arm is what i mean even if i'm saying it wrong) will that give me more steering?
thanks in advance
-Eric

[DLF]

The part number is in the subjectline of that post. I haven't yet looked around to see who sells as I've just recently seen it on the Mugen site. I would imagine Nitrohouse would have it.

[ragamuffin]

Originally posted by DLF
Has anyone tried these in racing?

Mugen says the following:
The position of pivot ball has been changed but angle of king pin is same as C0158. It is more easy to drive especially there is a lot of gap and rough surface in track and feels more sticky in front and faithful in steering. You can easily control the direction of car from corner to end of corner and corner with gap too.

I know some who have tried them, and then returned to the stock front uprights. Personally I haven't bothered to look for them yet.

[mugenseike]

i love mugen seike belt's :o , don't you?

[speedydave]

Belts? The XR is shaft driven. :rolleyes: ;)

[mugenseike]

well I wasn't specifically talking about the xr, if not i would have mentioned it,hehe. :D ;)

[jasonrcfreak]

Anyone know where the heck I can find a center Torsen diff for my MBX-4RR??? I can't find one anywhere!! It should fit the XR as well.
Thanks
J

[Rog]

What would be a good clutch upgrade for the XR? Right now I'm running the stock clutch and I just built my buggy. My buddies who race say that I should upgrade my clutch before I start racing it. What and where do I get hopup clutch parts?

Thanks

[jasonrcfreak]

I'm running the white Mugen clutch shoes and I really like them. I got them from Northwest RC(formerly National RC) in the Seattle area. www.nationalrc.com

[speedydave]

That kind of depends on your engine, track, and driving style. I'm running a WS7, which is more of a mid- to top-end engine. I recently picked up a set of Mugen black clutch shoes and Mugen 1.1 springs(silver), so the clutch engages a little bit later than it used to(thicker springs). I really like how this has changed the bottom end on my buggy, but it's different for every situation. Talk to the fast mugen(and even the non-mugen) guys at your track and see what they suggest for your engine/track.

[jasonrcfreak]

I'm running a Paris-Picco XP ProBV which is a very strong low to mid range engine. I'm running the black springs with the white shoes and it seems to hook up well.

[Racin Rev]

I have a used mbx4. When I run it, it makes a high pitch whining noise, kind of like a slipper would make on a 1/10 scale. I am thinking that this is the clutch. Is this normal?


Also, does anyone run the hyper 8port? I have a new one and am having trouble getting any real power out of it. All the reviews say it is fast. any ideas?

[jason102276]

if you take your 2 problems and combine them it sounds to me like your clutch is extremely shot and never engages fully

gotta check the clutch frequently on these 1/8 offroad buggies the clutch takes a serious beating with the dirt, power, and hard landings

therefore no power and poor tunability

i go through clutch bearings pretty regularly and i chech clutch every time i replace them and scuff shoes and bell with sandpaper

anyone know when mbx5 will be for sale in USA?

[rcharry]

Hey im planning one buying a mbx-4, its extreamly dirty, and has a HORRIBLE engine. I just wanted your expert opions on this buggy, and to see if i should buy it.

Here the link for pics page 2.

http://www.radiocontrolzone.com/forums/showthread.php?s=&threadid=119329&perpage=&pagenumber=2

thanks

[Micha_MX4]

hi!

did anyone try the Fioroni milled Ergal chassis, look very nice...

any positive - negative experiences?

Micha

[Micha_MX4]

this upper suspension arm plate replaces the plastic part
(only plastic part) that holds the upper A-Arms.

any good? cost's alot 25$

Micha

[Micha_MX4]

and finally how about these rear knuckle arms...

extremely expensive 90$, are there alternatives?

[Rog]

What is the site with the Fioroni parts? Like Torsen and chassis stiffeners?

[Micha_MX4]

an overview about Fioroni Torsen diffs:
http://www.generalsilicones.com/fioroni.html

and hopups:
http://www.generalsilicones.com/mugenoptparts.html

[NitoIgniter]

First, the MBX-5 is now listed on tower:

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXECD8&P=7

Second, I can't tell from this towerhobbies page if it comes with an engine and if so what kind. An engine is not listed under "REQUIRES:" but who knows.

Does anyone have the inside scoop? Has anyone ordered one yet? Anyone seen the engine or lack of yet?

Oh wait... maybe I should post this in the MBX-5 thread.... oh, that's right, there isn't one.

[Micha_MX4]

as the MBX-5 is supposed to be a racing buggy - an evolution
or further development of the MBX-4 XR I'm pretty shure it
won't have an engine included.

an included engine makes sense in an RTR-model or a beginner
modle, but not in a pro model.

just my opinion,
Micha

[DLF]

$742.99??!! Man, 1/8th scales are getting way overpriced!

[Micha_MX4]

yeah right, maybe there are not that much kits availble and therefore they can keep the price high.

maybe next X-Mas the price will drop...

btw. the MBX-4 XR Works is still around 650$ in Germany...

Micha

[tranced]

DLF, you have to remember that Tower Hobbies shows the LIST price until they actually receive shipments of the product. Then they lower accordingly.

[DLF]

Yea, that's true I suppose. In any case, I don't plan to ditch my XR for one. At least not anytime soon. I wonder if it will be possible to convert an XR to a mbx5? Kinda looks like it.

[tperkins]

The Tower price has gone down to $629.99. I think this may be where it is staying, but Im always hoping that it will go down. But Im not buying from Tower anyway.

[FlyinRazorback]

Like all proud fathers, I want to show off a pic of my kids.....;)

http://community.webshots.com/photo/69833095/69833131OqhfAD

The one with flames sports a Rex P5 and the purple/yellow/green one has a v01b. They both mind well and never talk back, although they are a bit rude to other buggies sometimes, but we are working on that :p

[kc_nitro_rc]

Help! I'm still new to 1/8th scale buggies & bought an MBX4-rr from a buddy. This season I decided to rebuild the diffs. I started with the rear one & replaced those six little gears inside and filled it with #1000 fluid (per instructions). After putting everything back together the rear diff seems very tight!

Is this normal for a new set of gears? Should I have taken a file & cleaned them up just a little bit first? I'm sure I will need to change the diff fluid after about 15 minutes of run time to clean out the debris from breaking in the new set.

[DLF]

There maybe shims in the diff for the older more worn gears. You may try removing some of the shims to loosen the diff up. However, I think a little tightness is ok.

[kc_nitro_rc]

Originally posted by DLF
There maybe shims in the diff for the older more worn gears. You may try removing some of the shims to loosen the diff up. However, I think a little tightness is ok.

I put it back together exactly as the manual said. Placed each gear on the shaft. Used the o-rings inside the gears, then placed one shim on each. So I guess I will have to agree with you that a little tightness is okay and see how much it loosens up after I put a few runs on it.

Thanks for the quick response! I'm going to lunch now:)

[Motorman007]

http://members.cox.net/ddibble/rcnews.htm

[nitrobuggyfan]

Well I'm looking at getting a new X5 or a Kyosho 7.5. What do you guys think makes a Mugen better? Have you had a good experience with yours overall? Oh, and FlyinRazor your cars look really cool

[rccardude04]

According to Ashton, the MBX5 is almost ready. they had some sort of problem with the right front suspension arm mold and the bodies. the team drivers should get their x5's shortly and they should ship early-mid may depending on how it all works.
-Eric

[HDClown]

I just got a used MBX4 XR. I got an excellent deal on it. It has an OS RZV01B(p) engine that is only a few weeks old. The car was actually an MBX4 RR converted to XR.

I think for the most part it's a stock XR, nothing else special in it hopup wise. It has a REX EFRA-9886 pipe. I'm unsure as to what clutch shoes it runs. I think the brake discs are stock.

This is my first 1/8 buggy and I decided to jump into it big, getting one of the best available. I got a pretty sweet deal on it used and it's in excellent condition.

I'm looking for some info on some necessary or top pick mods for the MBX4 XR. Some websites devoted to the car would be great as well. Anything tips would be greatly appreciated! If anyone wants to chat on AIM with me, please drop me your screename.

[crypt]

well this is a pic of my xr action, and here is a good web site for the xr and some buggies, engines, temp gauges and more.
http://www.twf8.ws

[crypt]

and that´s happens when you forgot to tighten a wheel nut ;)

[crypt]

and here you can see a part of my club track ( Club RC Generalife)

[Chas]

Has Mugen specified what changes have been made to MBX5? Besides a new battery/ reciever box and side mounted steering servo it looks like not nothing has changed from MBX4 that would warrant such a large increase in price.

[FlyinRazorback]

Big bores and carbon fiber parts are added

[jason102276]

alot of stuff has been changed between mbx4 and mbx5

it now has longer suspension arms and it looks like they copied the kyosho 7.5 rear suspension the battery was moved inboard the steering servo was laid down the engine mounts lower aluminum clutch is included and probably 10 more things we havent even seen yet

and i was told the price will be close to the same as a XR it sounds like a great deal to me

it looks like the track you race on is nearly flat

the track near me is full of jumps

it took me a while but i think ive finally got my buggy to handle as good as any other

oddly enough the thing that helped the most was to raise the ride height some it used to bounce all over so i thought the cg was too high so i was trying to run low but i heard from somewhere to raise ride height in bumpy conditions and they were right

i have rebuilt all my diffs without using the o-rings in the spider gears this makes them all turn very freely i used 5k front 7k center and 3k rear

and if anyone out there is looking for a new engine i have just gotten the new rx21 p5 engine from novarossi with the purple engine head and it is INCREDIBLE it has great bottom end and strong top end i went from having to double single the triple to being able to clear the entire triple by a couple feet (dont recommend it though came down on the flat and my track is blue groove so the track is extremely hard i bent the rear brace so it looks like a bannana and broke the reciever box where the battery attaches luckily it didnt matter because that was after the end of the A main which i won after bumping up from the B)

[FlyinRazorback]

I absolutely love my P5. Good on gas, easy to tune, and ton of power. The best bang for the buck.

[jason102276]

it is great on gas and very easy to tune isnt it

i was running 220-230 and getting over 7 minutes of run time

and at one point it was so strong on bottom end i began to worry i was too lean on bottom end so i richened the low end needle more than 1/2 turn it slowed some but bottom end was still very good it has a very broad range of needle setting

i want to sell my ofna picco 0-1 comp and buy another one

and of course its a novarossi engine so there is no doubt that it will last a very long time i expect to get 3 years from it before i have to sqeeze it

[HDClown]

Can anyone tell me where I can get some beffier turnbuckles and ball links? I broke one of the front links today and my used car had rear turnbuckles 2x as thick as the factory XR front ones, so I'm trying to find where to get these.

[jason102276]

i dont know where to get beefier linkage

i have replaced my tie-rods hinge pins and pivot balls with titanium ones made by lunsford

i got them from nitrohouse

[HDClown]

Jason,

Why other kinds of modifications have you done to your XR? I keep looking around to find things but can't find much. I realize the car was designed so that you don't need to change anything, but people usually come out with a few things here and there.

[kreidel1]

Who sells those aftermarket chassis braces for the XR that connect to the center bulk?

[jason102276]

i sanded and polished all the purple pieces untill they looked like chrome and got big bore shocks other than that i have done nothing

i tried to post a picture but it is too large

those braces i believe are made by mugen check their site or nitrohouse.com

i wanted to order them but i couldnt figure which would fit XR i think they are for the RR

i definetly recommend them if you plan on running the car for a while i bent mine last weekend it looks like a bannana now new ones will be here tuesday but because it was so confusing which fit i just ordered the originals i will be getting a mbx5 soon anyway

[HDClown]

Anyone convert an MBX-4 to a monster truck? Aside from just putting on bigger tires (like Ofna Dominator wheels/T-Maxx tires).

I'm looking at selling my Savage, buying an MBX-5, and then doing some with my MBX-4 XR, such as a monster truck conversion. Need more info on what to do though.

[jason102276]

i have a friend who talked about doing the same thing

seems like monster truck tires some body mounts a body and a ride height adjustment and youd have everything you needed

[HDClown]

Is there anything special I can do to adjust ride height? I know there are adjustment screws in the lower A arms. Is there anything I can do beyond that?

[Toiffel]

I'm interested in getting a buggy, I've been looking at a mbx 4rr and a hyper 7 pro, but I can't decide, any input would be appreciated, are there important differences between them?? what should I do??

[HDClown]

If you're buying brand new, I don't think they sell the RR anymore, they're all XR's. But anyways, Kyosho and Mugen make the best buggies on the market. The Ofna buggies are good, but aren't at the level of Mugen MBX4 and Kyosho Kanai II.

[HDClown]

Are the Ofna branded torsen differentials any good? They are 1/2 the price of the fiorini and I know someone selling a barely used center one. Wondering if it's worth the money.

[Racin Rev]

I want to piggy back on HDClown's question. Are the regular ofna diffs a drop in replacement? My MBX4 diffs are leaky as can be, they might have updated them on the rr and etc. but I have no way of knowing. I am looking for something that won't leak as redily. Thanks.

[Ford Racer#1]

I am trying to get a nitro 1/8 off-road and just wondering what the Mugen 1/8 scale comes with Such as what it all includes. And just a question and i dont think they do but is there RTR version of the mugen?? or is there a kit were i can get a engine with the buggy? im at a money limit at about 600 dollars so i dont want to spend to much



THNX ahead of time

[Racin Rev]

Does anyone know the thunder tiger part # for a diff rebuild kit? I hear that they will drop into an MBX and are steel rather than alum.


Ford Racer#1
It depends what you already have. If you don't have a motor, radio, servos, etc. I don't think that the Mugen would be within your budget. i would rather suggest the ofna hyper 7 pro or Hyper pbs if you need rtr equippment. I don't think that the MBX4 is enough better to justify the price difference. The MBX5 may be a different story, but we will see. It seems that everyone and their grand neice is coming out with an 1/8 scale these days. some are good and some are... well... not so good. None have yet knocked the Kanai II off of the podium yet.

[jason102276]

there is no mugen 1/8 available with engine however i think they should offer it with engine pipe and header just like they do with the mtx3

i asked my lhs about mbx5 and he told me my approximate price will be $570 for rolling chassis still need engine pipe and header and radio equipment and starting equipment the whole thing if i needed it all would cost me well over $1000 luckily i already have everything else i need

like racin rev said i would recommend that if your budget is $600 that you get the hyper 7 pbs should be less than $500 is rtr including starter box ignitor and fuel bottle a really fantastic deal if you ask me and you could use some of the extra money you have left over to get a better steering servo and the rest to buy some spare parts or something

is it race worthy? i think so with a better steering servo and it will most certainly have hopups available soon

i at one point was thinking of selling my mbx4xr and getting a hyper 7 pbs i like pivot ball suspension and my mugen was having handling issues on the rougher areas of my local track and the hyper is more stable like kanai

i believe the mbx5 is going to knock the kanai off of alot of podiums in the future the question is going to be drivers talent instead of car handling i plan on putting mine on the podium a few times here locally just like i have with the mbx4xr

[DLF]

Racin Rev-The part number is PD0609 from Thunder Tiger.

[Toiffel]

Is there a conversion kit, to make the xx a xr?? What's the part number?? Any help appreciated....

[Racin Rev]

Thanks DLF.:) That makes my searching easier. Now if I can find someone who still carries tt. It seems that ACE got disgusted with them and dropped the whole line. I think that they were the main distributors. They said that it was impossible to get shipped product. I wonder if that is what is holding up the Associated MT.

[philadater]

Here are a few teaser pics of the MBX5 of Daniel Vega
http://www.neo-buggy.net/Other/WC%20warm%20up%20sunday/wc-warm-up%20033.jpg

http://www.neo-buggy.net/Other/WC-warm%20up/wc-warm-up%20043.jpg


For all news and race info go to www.neo-buggy.net

There are also more pictures, look under race report from WC Warm up

[guswiththemugen]

This thing looks great.

[segrito863]

you could custom mount a ofna dominator center spur for the torque you will need to get the heavy tires around. otherwise say bye bye to your clutch!

Matt

[GT4eva]

I race a Kyosho buggy and I really like it. I have always wanted a Mugen but the deal was good on the K-car so I bought it. With the release of the MBX-5, I am once again thinking about getting a Mugen buggy.

Over time at my local track, I've seen problems with Mugen cars. 2 guys I race with own them and they both have problems with blown diffs and clutch bell bearings. One of the guys also owns a Kyosho and has no such problems. I am wondering if Mugen has these problems ironed out or not?

I have heard about leaky diffs in Mugens... is this the builder or is it a common problem?

I'm not knocking the Mugen buggy, just looking for some straight answers.... no RC car is without shortcomings ;)

What do you all think? Should I grab myself an MBX-5?

Thanks

[DLF]

I've owned an XR for over 2 years and have never had diff problems. As for leaking, well, I seal mine with silicone and they stay completly dry.

As for clutch bearings, all cars are pretty much designed the same in that respect and the life of the bearings depends on the quality of the bearing you use. For the most part however, clutch bearings should simply be considered as a consumable.

[jason102276]

i have leaky diff issues but i should have used some silcone to seal them the mbx5 will have different diffs but will they leak nobody knows yet but some silcone will stop any leaking they may have done

clutch bearings do go frequently but i dont know what causes it i wouldnt think it was the cars fault but i guess it could be i replace mine usually after a race or 2

other than that though my mbx4xr has been awesome i have rarely broken it only twice really once i hit a curb with the rear and snapped a hinge pin but it was a really hard hit right on the wheel and the other time was when i jumped it about 10-12 feet up and nearly 20ft long and landed hard on the rear broke the radio box and bent the rear chassis brace

i have raced it for 2 years and those are the only times i broke the car any other problems i ever had were because of not using lock-tite engine failures or servo problems

i think the mugen is the most durable buggy out

[speedydave]

I've only blown one set of clutch bearings, and that was when my clutchbell screw backed out, and the bell slid partially off the engine, allowing the bell to wobble. The clutchbell has a funky design worn into it from the spur gear rubbing the bell now. :p

[crypt]

well, i broke some clutch bearings, once when the cbell was out, and the other because i use a kit of shims that didn´t work well, but now i have the new shims and it´s ok, the only leakyn diff is the rear diff, but it leaks a little, but i never have a broken diff.

[DLF]

Hey guys, I'm looking to replace most of the bearing in my XR and see that Nitrohouse has a set of 10 bearings for 33.99. Anyone know anything about this? Are these Mugen brand bearings?

[GT4eva]

Thanks for the feedback!

Well, I would guess maybe it's the Mugen clutches that are causing the blown bearings. It's good that you guys don't have the problem but it really does exist. My two Mugen buds are plagued with it... in fact my crew went to a ROAR national at RC Madness in CT last year and saw this Dumas guy kick butt with his Mugen. I believe he went through a set of clutch bell bearings and my bud remember him ripping buy with a very loud, grinding diff.

I need my diffs to be leak free without the use of sealant. On my Kyosho, I can rip apart a diff at the track, fill it up with a different weight oil then pop it back in the car and run it... without leaks. When you use sealant, you have to wait for it to cure if you want it to do any good.

I'm still considering the Mugen, it's definitely a sweet car. Maybe I'll wait until there are a bunch of MBX-5's around and see how they are. I really wanted to be the 1st guy at the track to have one though:(

[jason102276]

you cant be the first and cautious at the same time

i wanted to wait but i havent got any patience and i had the money so ive ordered it

i still wont be first i know a guy locally who says he has it already and another who will be getting his when i get mine

i have been very pleased so far with all my mugens

[GT4eva]

Well, I said screw being cautious and I ordered my MBX-5 today! I thought about it all day and finally called Nitrohouse this afternoon and did the deed. I'm sure I'll love the car... I'll probably hang onto the Kyosho as well.

What type of crankshaft is the Mugen meant to accept? I have a freshly squeezed, not even broken in RZ VO1B motor I'd love to drop in there but it has a threaded crank... and it was cut down to go into a 9.5 Pro. Will this motor drop into my Mugen?

Thanks

[philadater]

Neo-Buggy (http://www.neo-buggy.net)

All new pictures of the MBX5 of Chad Bradley and Daniel Vega and even more !!

Neo-Buggy.. the site for all your 1/8 Off road needs

[Rog]

Anyone know another company that makes thicker, upgrade shock towers for the XR? Fioroni is not making parts for the XR anymore from what my LHS told me.

[OldskoolGT]

You guys who are getting X5s are in for a real treat. I saw 2 in action over the weekend at a 2 day race. Both held up great and they both looked dialed on the track. It looks like Mugen did their homework and made sure all the bugs were worked out (unlike the situation with their POS truck). If I didn't already have a Kyosho, I would be jumping on the Mugen bandwagon right now. :)


jason102276,

The X5 uses the same diffs and the MBX4.

[hansking12]

got it on sat and wrenched till today. it's finally finished and i put 3 break in tanks through the new novarossi p5 motor so far.

the build was uneventful, but those built-in sockets for the hex nuts in the side dust covers were too weak, which resulted in a stripped out hex nut hole. oh well, time to contact mugen and see what they'll do.

i'll post some pictures in the next couple of days. . .

anyone know anything about the p5 motor? the idle screw doesn't seem to be working--just binding up the throttle when turned in. it's barely holding an idle, but i guess i should wait until break in is over.

[Toiffel]

I just got some new tire and wheels for my buggy, but last night when I was putting the rear left tire on, I noticed that it was binding, and didn't rotate freely, I have some ofna 5 spoke wheels, the weird thing is that the other three wheels are fine, it's just the rear left wheel, I tried switching everything from the right side, but nothing happens, what could it be?? has anyone had this problem before?? do you guy think that using a washer might help or what do I do??
Thanks!!!!

[Racin Rev]

not likely to be the wheel or hub. More likely a bearing or outdrive shaft. Put the old wheels on and see what happens.

[Toiffel]

The old wheels work fine, not binding at all, it's like the inside of the rim binds with the end of the arm?? I tried adjusting the length of the ends, but nothing.....

[Toiffel]

Yup, a washer did the trick, thanks....

[trakhak]

Hope you guys can help me out, I am considering a trade, my savage roller for a MBX4 roller, my question is, is this buggy still going to be competitive at the club level? Will parts still be available for it down the road? I am going to use my OS RG motor that was in my Savage(POS). A bud that I race with and work part time with is willng to trade me since he has the 5 and knows I am hot to get into 1/8 buggy and he wants to try and make the savage race worthy, RIGHT!! Be warned the savage is for play only I have blown the tranny in the thing twice!! The 4 is in sweet shape and he just rebuilt the diffs and shocks.

[trakhak]

Man, 3 days and no posts, I guess that answers my question, this thread is dead.

[FlyinRazorback]

Of course it will be competitive at the club level. The XR is still a good buggy. I would make the trade, I don't think you'll be disappointed.

[Toiffel]

I just got a rr, with hop ups, and I love it, it's my first nitro, and I enjoy every minute of it!!!!

[OldskoolGT]

trakhak,

The MBX4 will still be competitive pretty much anywhere. They finished 2nd and 3rd at the last IFMAR Worlds, and that was less than 1 year ago.

The MBX4 is probably the most durable 1/8 buggy, so its a great buggy to start out with.

[DLF]

I agree. 1/8th scales are so close in design that it's hard to make major improvments. I intend to continue to race my XR for at least another year. I think it will continue to be a contender well after I sell it.

[trakhak]

OK thanks guys on the replies, I have no patience! I did feel also it still could hold its own, but do you think parts will get harder to find or is it like full scale cars and they will continue to manufacture parts for a length of time? Thanx

[Micha_MX4]

The weight of my XR-Works is 1596g, Car with engine,
electronics, wheels (worn) but without fuel.

What about the MX-5 and the rest of the pack???

Mike