OFNA MBX Buggies [Archive] - Page 2

crank throw wei

12-14-2002, 12:14 AM

I didn't mean to bumm you out Merc,it's that I went to that website you posted,and had legit questions.The truggy thing at least has a good reason for being;it adds ground clearence.The 2.2s IMO,don't have any benifits.If it works for you,go for it! I just can see it for me,as I already have wider street tires ,and they're made FOR my buggy.The only 2.2s I would even consider for my buggy is my paddles.:)

mercenario27

12-14-2002, 06:00 AM

puddles, bingo!!!!

I got a set just play with. since i grew up and moved on to bigger and better things, i have a bunch of tires and rims left over. plus not everyone has them

mercenario27

12-19-2002, 09:19 AM

Got pictures of the Hub adapters and shock towers that i bought from SS R/C Racing (http://www.geocities.com/ssrcparts)

NitroRookie

12-19-2002, 01:51 PM

What do you guys think about the 9.5 MBX from the info available ?

-=ADA$=-

12-19-2002, 05:30 PM

i think its great racer (9,5) and has great adjustabilitie (MBX) so i would say great buggy

crank throw wei

12-19-2002, 05:35 PM

ADA$: Did you get your alignment set up how you want it?

-=ADA$=-

12-20-2002, 11:52 AM

i have set it up so when uncompressed wheels are paralel, and when fully compressed they point inside, but its good i think,

soslo

01-01-2003, 08:13 PM

Good you meet ya' crank!
I was with Chevrolet for 27 years. ASE Masters Cert. in automotive and medium\heavy duty trucks.
I like your idea on the speed record thing.
4 w/drive would help the steering, but the drivetrain would also put a little extra drag on the motor. A driveshaft design, like the TC3, has less rolling resistance, and therefore more effecient than belt drive. Athough that point is highly debated also. It would still be a good design to follow.
I would think you should be able to wind the 4 stroke out longer than the 2 stroke. Just have to check on the engine specs. The 9 port RB C5 takes a while to wind out. That may be a good choice also. Just don't know about stuffing a .21 in the TC3. It would be radical! LOL!!
I'll bet it would take the record, if you could keep it in a straight line.
Have a Good Day! :)

soslo

01-01-2003, 09:46 PM

Can't wait to see it crank. Sounds veeerrryy innnnteerreeesting already!
Have a Good Night All! :)

coyote660

01-01-2003, 11:47 PM

happy new year everyone...

KOLOR KRAFT

01-02-2003, 01:12 PM

quit screwing auround and get the pro 7 end of discusion.........if you buy the rtr's you will still need to upgrade motor and servos anyway. the rtr is good for about 2 weeks then they are junk......o and don't forget the diffs blo apart all the time.

Lost Racer1

01-02-2003, 04:04 PM

Tmaxx does NOT compare to the excitement of running an 1/8 scale buggy.:o

hellbilly

01-03-2003, 02:30 AM

ok so i need some opinions.

best pipe for mbx pro with the .25?

what should i get rid of off the bat(besides steering servo)?

anothermbdusted

01-03-2003, 01:42 PM

call ofna toll free 1-800-635-2812

mtracer

01-04-2003, 01:50 PM

I need some help here guys.......
I sold my MT Racer and now I have 600.00 burning a hole in my pocket!!

Im new to buggy's so Im not sure about the Ofna's

I was looking at the OFNA 9.5 MBX RTR Ready to Race
PART #34955 RTR

I dont need a RTR but thats all they have.....

Any suggestions.....

http://www.ofna.com/95mbx.html

soslo

01-04-2003, 02:10 PM

I prefer the Hyper 7 pro. The 9.5 pro is great also, plus it is slightly less $$.
If you have the radio, get the kit, and an O.S. RB??..RG?? I get confused! The O.S. v01b is great also, but more $$.
That would fall into the $600 range. The v01b would push you over.

JIMMYBANGBANG

01-06-2003, 02:11 AM

WOW THAT 9.5 MBX IS NICE!!! i just ran my cousins ofna mbx pro .25 engine, that thing was a breeze to tune and break in. thats a nice ride, ofna did a good job on the mbx pro, and the tires are pretty slick.:D

JIMMYBANGBANG

01-12-2003, 01:31 AM

ok there is a couple of defects, the screws, ah why are they going to put small screws on the bottom of the ofna? especially the ones that support the upper deck. its all good i guess, just a pain in the .... does any body know where to buy different screws? some good ones? like blue anodized ones?

cbr74

01-15-2003, 03:40 AM

I just recently received these. Anybody that's thrashed on an Ultra series buggy can tell you the stock shocktowers are butter so I was very pleased to try out these new towers.
They are 7075 T6 and should prove significantly stronger than stock.

The first thing I noticed was the finish... very smooth and shiny. The machining is nicely done and all the holes have a nice bevel to them with no sharp edges.
http://mediaservice.photoisland.com/auction/Jan/20031152466568058044660.jpg
http://mediaservice.photoisland.com/auction/Jan/20031158090300003153788.jpg

Compared to a stock shocktower, these are obviously worlds higher on the bling bling scale. They feel ever so slightly heavier, but the weight difference is negligible.
http://mediaservice.photoisland.com/auction/Jan/20031156820720780475980.jpg

Installation of the rear went without a hitch. All holes lined up perfectly.
http://mediaservice.photoisland.com/auction/Jan/20031158302032236105289.jpg
http://mediaservice.photoisland.com/auction/Jan/20031153020336800487051.jpg

The front installed easily with one minor glitch. The center hole for the body mount was a bit low which required a little Dremel work to the body mount post to get it to sit just right. I informed SS of the error and they've since modified the design.
This pic really shows just how mirror-like the finish is.
http://mediaservice.photoisland.com/auction/Jan/20031157103427169015768.jpg

The verdict:

The quality of the machining and the finish is top shelf. They really dress up my MBX nicely. I haven't had an opportunity to torture test them yet because of weather but I will give them a thorough thrashing as soon as I am able.
7075 T6 construction and excellent fit and finish make these an almost "must have" for any Ultra series buggy owner.

I hope SS R/C continues to support the Ultra series with more cool parts. I wouldn't mind seeing some aluminum center diff mounts, a one piece center brace, and maybe some wing mount stiffeners.

SS R/C Racing (http://www.ssrcracing.com/)

:cool:

JIMMYBANGBANG

01-15-2003, 06:57 PM

shock towers look good, but i never had my shock towers on my mbx pro break. plus they are blue to match my shocks and upper deck. those look good though.:D

JIMMYBANGBANG

01-15-2003, 07:02 PM

does any body have cleaning tips on cleaning off road buggies? i dont know but i tried to clean my buggy after every run and it sucks. i always have to take the engine out and electrics and soak the whole thing. i am thinking if i cover the intake and exhaust and just leave it on the buggy, and spray the whole thing down with a water hose then dry it off then hit it up with wd40. let me know if you guys have any ideas, i will greatly appreciate it..:D

mercenario27

01-15-2003, 07:21 PM

I have the same shock towers. They are really solid. I'm not to worried about the weight, I don't think its that much more. I really think the Stock Towers are made of real cheap stamped aluminum. I bet their CNC Towers are only 6061, I've bent them too.

MORFEEIS and I have been helping Steve with his site. Check it out SS R/C Racing (http://www.ssrcracing.com)

Originally posted by JIMMYBANGBANG
does any body have cleaning tips on cleaning off road buggies?

I've always had good luck with Foaming Citrus Degreaser and a aircompressor.

coyote660

01-15-2003, 08:28 PM

hey sarge...there are some commercial cleaners for r/c out there that neutralize the fuel and degrease...simple green is ok...compressed air is good...avoid water...not good for the electronics and some stuff rusts...

SSRCparts

01-15-2003, 09:25 PM

Compressed air works very well. Recomend safty glasses though!
100 to 120 psi. is fine.

Thanks for your help guys. Mercenario, Morfeeis :cool:

SSRCparts

01-15-2003, 09:31 PM

And everyone else who has helped:D

JIMMYBANGBANG

01-15-2003, 10:01 PM

Originally posted by coyote660
hey sarge...there are some commercial cleaners for r/c out there that neutralize the fuel and degrease...simple green is ok...compressed air is good...avoid water...not good for the electronics and some stuff rusts...

oh yea i forgot all about simple green, we also have war horse in our shop, and also we have a nitrogyn bottle for checking refrigerant leaks...hm nitrogyn sounds nice. 100 psi? wow thats alot, that is almost like sand blasting..lol i will just use like 60 psi the most. our tanks are very big..lol i cant do 100-140, the psi is alot more, since we have bigger tanks and all. will it damage the engine? man i should have thought of that, i am going to use the nitrogyn bottle at work, for sure it will clean it up. i am just worried about damaging my engine.:D

DUUMDUDE

01-18-2003, 03:57 AM

MBX w/7.5 Kyosho shocks & OS RZV01B.

crank throw wei

01-18-2003, 11:17 AM

Pretty sweet DUUMDUDE ! Got a name picked out? Orange crush perhaps? Or ORANGIOUS ?:)

JIMMYBANGBANG

01-18-2003, 11:35 AM

Originally posted by DUUMDUDE
MBX w/7.5 Kyosho shock & OS RZV01B.

oh nice! like the rims as well. bling bling..lol

Pacoson

01-26-2003, 05:05 PM

Ok I've been doing the math (research) What does the MBX mean stand for?

The 9.5 RTR is this a MBX? Tower has it for 499.99 is this a good buy for the $.

Please give a hand
Thanx
Jon

Vmax911

01-26-2003, 07:31 PM

I'm not exactly sure what MBX stands for. Most of the Ofna buggies with the "MBX" suffix have pivot ball suspension. So maybe the "M" stands for Mugen wannabe?

-=ADA$=-

01-27-2003, 03:44 AM

someone tried to read the "code" also and it could be MugenBuggyX-??

coyote660

01-27-2003, 11:32 AM

My Buddy Xaivier...:cool:

JIMMYBANGBANG

01-29-2003, 03:40 PM

Originally posted by Pacoson
Ok I've been doing the math (research) What does the MBX mean stand for?

The 9.5 RTR is this a MBX? Tower has it for 499.99 is this a good buy for the $.

Please give a hand
Thanx
Jon

LOOK AT ACEHARDWAREHOBBIES.COM I FOUND THEM TO BE CHEAPER THAN TOWER. also try to just buy the kit and buy the motor seperatly, pull start are a pain, they work but you will find out in the future you will invest in a starter box instead, much easier. plus rtr kits tend to fall apart if you dont lock tight every screw on the buggy. and if you arent looking to race the buggy then just buy the MBX pro. it runs just as good and it is cheaper as well, but if you got the cash flow then get a hyper 7. besides all that they all will work for me:D

racewithmepleez

01-31-2003, 06:05 AM

sup fellas..

quick question-I have an OFNA Ultra GTP (on-road 1/8)
I know its based on the ever popular MBX buggies-
which I think stands for Motor Buggy Cross LOL...:D
....n-e-ways, what do I need to convert it to a Buggy/ or even
a RALLY car..besides shocks and tires?

thanx ..

soslo

01-31-2003, 07:28 AM

Unless someone in here knows.. give www.nitrohouse.com a shout. (they have a 1-800 number)
If it can be done, they can tell you what will fit, and what won't.
Plus... they have all the parts.
Good luck!:)

mercenario27

01-31-2003, 12:54 PM

Ofna Started a new Message Board

http://ofna.myikonboard.com/viewboard.php

Bob states it still may change.

crank throw wei

01-31-2003, 09:11 PM

racewithmeplease:To convert to a buggy,you will need softer springs,Buggy skid plate,and the buggy body posts,plus,of course,a body and wing assembly.The GTP conversion also comes with shock towers,But I have found they work fine in buggy configuration.

soslo

01-31-2003, 10:10 PM

Hey crank..
You will like this one.
Go to the forum on the Ofna site and check out the twin engine Titan. The guy did a really good job with putting it together.
Even I have to say... "It looks sweeet!!"

coyote660

01-31-2003, 10:25 PM

hey slo...what a great idea...white glue and bearings...cvb's right?...wish i'd a thought of it...;)

crank throw wei

01-31-2003, 10:41 PM

Well,it is interesting! It's nice for a show piece,but I would have to think that for a for real "take it out and play with it" kind of vehicle,the work of having to keep 2 engines syncronized would be a pain in the butt.But their I go being practicle! O.S. makes several multi cylinder engines for aircraft,I wonder if one of them might make an interesting swap.

JIMMYBANGBANG

02-01-2003, 12:18 AM

does any body know what will happen if you have an exhaust leak? and if you have fuel shooting out from the intake, what could be the problem? could it be too much fuel? or an exhaust leak? or can it be the wrong type of exhaust pipe/ header? if any body knows the answer it will be great, thanks.:D

coyote660

02-01-2003, 01:25 AM

sounds like a job for MWG...

racewithmepleez

02-01-2003, 05:54 AM

Originally posted by crank throw wei
racewithmeplease:To convert to a buggy,you will need softer springs,Buggy skid plate,and the buggy body posts,plus,of course,a body and wing assembly.The GTP conversion also comes with shock towers,But I have found they work fine in buggy configuration.
and I dont need to replace the a arms?
how about ride height?
thanx

JIMMYBANGBANG

02-01-2003, 11:45 AM

yeesss, got the 01 running, my theory of the exhaust leak was the prob. i thought giving these things less restriction will give it more power, but i guess i was wrong, i guess they work more like a return. the 01 is fast attack. :D :D :D

crank throw wei

02-01-2003, 07:16 PM

Nope,the a arms are just fine.To raise the ride heigth,adjust the set screws on the lower control arms,where they contact the pan.

cbr74

02-12-2003, 01:19 AM

Hey guys, I picked up a load of spare parts for cheap and among them is the complete pivot ball set-up for the rear of the MBX. Should I put it on or leave my MBX the way it is?
Any opinions?

CJ3willyMX

02-12-2003, 05:30 PM

for all of you wanting to know about chassis kick ups i believe the mbx pro will fit the mbx. Ofna has manuals online now and looks like a fit.

MBX R2

02-13-2003, 05:32 PM

will the ofna mbx4 front lower a-arms fit my mbx r2?

crank throw wei

02-13-2003, 09:22 PM

I believe the MBX4 is a Mugan,not an Ofna.

MBX R2

02-13-2003, 09:27 PM

there are ofna mbx4 front lower arms

mercenario27

02-15-2003, 06:11 AM

The New Ofna Board is up Click Here (http://pub77.ezboard.com/bofnaracingnitrotalkback)

airsus

02-16-2003, 05:48 PM

I'm looking at getting a buggy, and the Ofna MBX is at the top of my list right now. I don't know much of anything about nitro, except the very basics, which is why I need some input/help. I found the MBX for $240 without an engine, or for $330 with the .21 engine. So, for $90, is it possible to get a better engine? I already have an Airtronics MX-3 transmitter/reciever, so I just need the buggy/engine.

crank throw wei

02-16-2003, 06:13 PM

You didn't say which motor it comes with(i'm guessing a force 21).Do your self a favor,save a little more,and get a Hyper 21(good),or a Hyper 21 8 port(better).They're much better engines for not much more money.:)

airsus

02-16-2003, 06:27 PM

I don't know, it just says Ofna .21 w/ pullstart. Are the ones you mentioned really that much better? This is going to be my first nitro car, so would it make that big of a difference to me? Thanks for the help:)

crank throw wei

02-16-2003, 07:04 PM

That's a tough call for me to say for a first timer.The Hyper series engines have WAY more power,and around the $130 area. Do you think you can respect the power until you can get used to it?:confused:

airsus

02-16-2003, 07:12 PM

It's not so much handling the extra power, as much as until I get used to driving and setting up the buggy, I don't think the extra power is going to make a big difference. On the other hand, it would only be an extra $50, and once I get the driving part down and I can use the extra power, it would already be there. Though decision :confused:

coyote660

02-16-2003, 09:38 PM

hey air...stock p-4...1.7hp...$110.
hyper 21...1.9hp...$125.
hyper 21..8 port...2.5hp...$135
it's your call...;)

crank throw wei

02-17-2003, 01:14 AM

Bite the bullet! Wait a little for the better engine.Or better yet,hit up mom,dad,or grandma for the extra dough! It will be worth it!:)

JIMMYBANGBANG

02-19-2003, 02:49 PM

OR YOU CAN BUY MY OFNA PICCO 01 FOR 145:D

coyote660

02-19-2003, 04:01 PM

fried it already huh...?:p

Lost Racer1

02-19-2003, 04:35 PM

Those 0-1's haul behind!

JIMMYBANGBANG

02-19-2003, 06:29 PM

Originally posted by coyote660
fried it already huh...?:p

I WISH I COULD HAVE BURNED IT OUT..LOL and no i dont run my engines lean either. i am not going to be able to run my buggy for a long time. it is called being in the military, we have a launch coming up, and all this time all we have been doing is prepping for the war, but i think the war has been red x till further notice so i dont know what the hell is going on. but yes i have not even been able to run the motor since i got it, well i ran it to make sure it will work with my buggy but thats it. if somebody would buy it thats all good, but if not, oh well i guess i would have to take it back out my buggy and store it in my garage till 7 months from now. i just figured why store it and sell it.

coyote660

02-19-2003, 06:51 PM

at least you're not gettin shipped...go delta 2...
hey...i just thought of something...how bout lettin me borrow it...:cool:

JIMMYBANGBANG

02-19-2003, 06:56 PM

lol

coyote660

02-19-2003, 07:04 PM

aw c'mon...i promise i'll take care of it...;)

JIMMYBANGBANG

02-19-2003, 07:07 PM

hey if you lend me one i will let you borrow one. but it would have to be something different than the 01 of course and at the same level. hmmm lets see, what motors you got?

coyote660

02-19-2003, 07:22 PM

what happened to "i'm not going to be able run my buggy for a long time"...?

JIMMYBANGBANG

02-19-2003, 08:41 PM

i am not going to lend it to you with out any insurance.

gman123

02-19-2003, 09:41 PM

what is the diffrence between the MBX and the MBX R2.

cbr74

02-19-2003, 10:27 PM

The MBX R2 has rear pivot ball suspension.

swwaltw

02-23-2003, 09:17 AM

i just joined the rc world with a ULTRA MBX PRO RTR does anyone else have this buggy i saw that the are some lx's

HyperActive

02-23-2003, 04:28 PM

Anyone know of any replacement clutch bells for the Ofna Hyper 8 Port for my Hyper 7....
Any part #'s or where to buy on line??
Or any other manufactures compatible with them.....

I would like to get an assortment of smaller clutch bells maybe a 12 or 12 tooth.......

MBX R2

03-02-2003, 03:25 PM

where can i find a clear body to fit my ultra mbx r2? ive looked everywhere

DUUMDUDE

03-02-2003, 05:03 PM

Originally posted by MBX R2
where can i find a clear body to fit my ultra mbx r2? ive looked everywhere THATS A KYOSHO BODY. I LIKE THEM BECAUSE THEY ARE THICKER & LAST LONGER. THERE NOT CHEAP! ACE HARDWARE HOBBIES.

swwaltw

03-13-2003, 06:56 AM

where can i get a clear body for my mbx pro

cbr74

03-13-2003, 02:33 PM

Nitro House (http://www.nitrohouse.com/parts,_ultra_mbx_r2.htm)

Part # 31142

dagoson

03-22-2003, 02:34 PM

I have been shoping ofna buggies for a bit i have a gs storm i see the ultra gt lx is like $300 and there is an ultra mbx for $350 then a 9.5 mbx i think but not sure of price what gives with all the different ofna buggies?really thinking of getting the ultra mbx. what advice can you guys give me?

swwaltw

03-23-2003, 10:24 AM

i have the ultra mbx pro rtr. it is my first buggy. i havent raced it yet but plan racing it this summer.

CaptEvo

03-23-2003, 02:54 PM

what do you think of the older version of the Ultra MBX (not PRO)?
is there any different beside the .25 engine and colored tires?
TIA

swwaltw

03-24-2003, 09:39 AM

dont know about older versions but this version is bad azz

coyote660

03-24-2003, 11:16 AM

my son's mbx is an older version and it's pretty much bulletproof...the drawback in the older ones is they don't have front end chassis kick-up...doesn't seem to bother him...

cbr74

04-08-2003, 06:39 PM

Mine's far from bullet proof. broken a-arms and tie rods are common.

I just scored a Pro chassis off E-Bay, so now I have an Ultra MBX R2 Pro.

ofnaman

04-09-2003, 10:45 AM

Has anyone tried a proline Crowd Pleazer body on an MBX?

PCC

04-09-2003, 11:26 PM

I have the Crowd Pleazer on my Worlds II. Get the one for the Kyosho, it's larger than the one for the Mugen.

coyote660

04-11-2003, 02:32 PM

cbr...just a guess but if those a arms are breaking at the shock mount, run some screws in the empty holes for a beef up...other than that...try landing with your wheels streight...

cbr74

04-12-2003, 01:56 AM

It did break across the shock mounts... I'll try adding some screws as you suggest. As for landing with the wheels straight... I wasn't the one driving it when it broke this last time.

coyote660

04-13-2003, 12:35 PM

hey cbr...being a native, i never heard of Coarsegold so i looked it up...looks to be right at the foot of the sierras...nice...

cbr74

04-14-2003, 01:54 AM

Yep, above the fog and below the snow. Fresno to the south and Yosemite National Park to the north.

rc man37689

04-24-2003, 01:23 PM

how fast can the Ultra MBX PRO RTR go? im thinking of getting one.

swwaltw

05-03-2003, 05:59 AM

i dont know what mine tops out at but it is faster than i have ever used there arent any straght aways that are long enough to to top end

JB_The_Evader

05-04-2003, 08:14 PM

For all of you that have the ultra mbx pro rtr, what is its top speed In stock form? I am considering buying one of these this summer. Also, how durable is it? I've been planning on buying a nitro car for a little while, and I've been having trouble deciding on whether or not to get a buggy, stadium truck, or touring car. I just got back from RCX a few hours ago, and after seeing their dirt track, I've settled on a buggy. The guys from kyosho were especially good; they were getting at least 15-20 feet up and landing back flips.
thank you

-=ADA$=-

05-16-2003, 05:13 PM

after almost a year since i got my MBX R2, im probably getting engine for it my choice is hyper .21 8 port, cause its cheap, and pretty powerful, now i would like to ask what battery pack will fit into the box, its pretty small, also what cheap stering servo would be good!! Thanks, also where can i get trs, cause i dont want any runnaway!!

kyoshofan420

05-19-2003, 09:18 AM

Hello everyone:) I was thinking of buying the MBX R2 Kit from acehardwarehobbies.com and was wondering if any engine is too powerful for it to handle. I think I may need a strong engine because the people who race 1/8 scale have Infernos, Mugen MBXs, 9.5s, and Hyper 7s. Most of them run high end engines as well, such as Novarossi, O.S., RB, and Picco. I plan to get the kit so I can understand the construction better. The electronics will be a Magnum 3PD of some sort, Hitec HS-605/HS-625 servo for throttle, and a Hitec HS-645MG for steering. What engine should I use and will the electronics be good? Thanks in advance:)

rc man37689

05-25-2003, 12:09 PM

in an rc nitro mag it said the lx pro RTR goes 46mph and the mbx pro is the same thing but with a couple of hop ups so its faster then 46mph. I think im going to get one too. YAY

-=ADA$=-

05-25-2003, 01:44 PM

Hi what shims, or what part number to use in diffs in MBX R2, ill be buying from Ace-hobbies, and i cant find the shim set, and do i need a set for center diff??

kyoshofan420

05-25-2003, 03:57 PM

Actually, now I'm not so sure I am getting one. I saw one at the track I go to and the guy had a lot of problems. After a minor flip, the rear shock tower was bent badly, one of his tires came unglued, and his wing broke. Granted, he was new to 1/8 scale, but he was driving pretty normal. This can be adjusted, but the buggy didn't seem to have the grip of other buggy at the track with similar equipment. I think I will end up getting a Hot Bodies Lightning Pro, unless there is a better buggy in its price range.

Vmax911

05-30-2003, 09:55 PM

Hey guys, just wanted to mention I have some spare buggy parts for sale in the B/S/T forum. They are of no use to me since I've long since sold my Ofna.... :(

Gped0124

07-18-2003, 08:39 PM

I'm a member of the club!!!! I got a mbx pro , with .25 ofna force. I have a question bout break in though. I am in my second tank, and It idles fine, but when I press the gas, it dies. Its getting real annoying...

Gped0124

07-18-2003, 10:02 PM

WEW, I just had so much fun just going 1/4 throttle breaking my mbx in. Althought the skin between my index and pointer finger is torn off from pulling the pull starter. I need a starter box, oww. I managed to break a lower front arm though. Are those covered unter warrantee? Who sells titanium or aluminum ones? The reason why I broke it is because my radio went insane and just drove the car straight into a wall. *** was that? Also should i invest in a high torque servo, the stoque on is crap?

-=ADA$=-

07-20-2003, 04:04 AM

high torqeu steering servo is wise investment, but better get throttle return spring, it has saved my car once, and i only did break-in, my batts went dead, and it just came to stop!!

Gped0124

07-20-2003, 09:51 AM

Would my LHS have a throttle return spring? I am in the process of getting a failsafe, but i dont think it will help my problem.

seise

07-29-2003, 02:19 PM

Just got my MBX Pro RTR, going through the break in process. WIth the body off it runs around 240, but with the body on the temps climb to close to 300. I have made the opening around the head larger. Anybody have any other ideas?

TIA

Avalanche

08-08-2003, 02:02 PM

Unless you want to cut extra holes in the body there isnt much you can do. A hole behind the head, the opposite window, and enlarging the others is the only way to go. I ordered a GPM billit head, we'll se how it goes.

notoriouzz

08-09-2003, 05:18 AM

Here's my MBX I got rid of. Ryan(Gped0124), mine was better than yours is.
:-D J/K

http://ebay3.ipixmedia.com/abc/M28/_EBAY_c03c8258080b374f0d7fee0037a8880a/i-1_B_L.JPG

racersnow

08-18-2003, 06:34 PM

Looking for shock help, running a oval with my buggy the rear seems to be too stiff any suggestions on oil weight?

MBX4RR

08-24-2003, 12:48 PM

Does anyone here have a Ofna Hyper .21 in there car? If you do what kind of pipe do you use ? I have an RB Concept and it to close to the pull start, it keeps on melting the pullstart.:(

ALJR

08-26-2003, 12:31 AM

here is a pic of one of my ofna buggies...
my other ofna buggy is the ultra mbx pro.. sorry, no pic of that one yet...

im thinking of selling this one. if any one is interested, drop me a pm :)

kiwi_from_nz

08-27-2003, 06:10 AM

whats the difference between a OFNA 9.5 Pro and a MBX ??? i run a 9.5 with a rb ws7 engine and all the goodies in it, i have done searches for the mbx and it looks very similar to the 9.5, is it or are there some notable differences ?

Thanks :D if you like i can post a pic or 2 of my buggy for all to see

-=ADA$=-

08-27-2003, 04:54 PM

MBX has pivot ball suspension, and i believe thats the only difference, well arms are also different!

kiwi_from_nz

08-27-2003, 09:10 PM

so pivotball suspension is alot better than the normal suspension on the 9.5 then ?

So if i was to find and buy a pivot ball suspension set for the 9.5 pro and instal it would it handle better or not ?

:D

PCC

08-27-2003, 11:10 PM

Originally posted by kiwi_from_nz
whats the difference between a OFNA 9.5 Pro and a MBX ??? i run a 9.5 with a rb ws7 engine and all the goodies in it, i have done searches for the mbx and it looks very similar to the 9.5, is it or are there some notable differences ?

Thanks :D if you like i can post a pic or 2 of my buggy for all to see The 9.5 is an all new ground-up design from Hong Nor. The MBX is based on the older Ultra series of buggy that they have sold (and are still selling) for quite some time, now. The MBX is a good sport buggy that can take to the track (but isn't quite competitive) while the 9.5 is competitive on the track. Only about 20% of the parts are interchangeable between the two buggies.

-=ADA$=-

08-29-2003, 04:20 PM

i think he ment ofna 9,5 PRO and 9,5 MBX. Pivot ball suspension is not always better its more adjustable, and as i know more durable, but to set it up correctly you need to spend alot of time tweking!! With MBX suspension you can tune on the fly, camber, caster, Toe-in, and track width

PCC

09-01-2003, 01:51 PM

I was thinking that since he posted his question in this section (which is usually used for posting about the older Ultra MBX cars) that he meant the Ultra MBX.

-=ADA$=-

09-05-2003, 05:40 AM

oh that way your right!! :D

ALJR

09-09-2003, 11:28 PM

any one here put metal disk brakes on there ofna ultra mbx? if so, which ones did you use? i picked up a set of the 9.5 disks. but they seem a lil on the small side (diamater is smaller than the stock fiber disk). they also fit lose on the drive cups, where as the stock fiber disk fit more snug...

any sugestions would be great... part numbers and links are even better :)

-=ADA$=-

09-11-2003, 03:32 AM

if you got other discs you should get other pads to clear them, maybe pads from H7 would fit, and its good that they dont fit tightly, cause when brake is applied discs slide a bit as they are sqeezed between pads

1 Bad STi

10-29-2003, 10:47 PM

Hey Guys, Have any of you have the problem of your brake linkages on your mbx hitting your gas tank? I cant seem to fix the problem. Please help!

cbr74

10-30-2003, 12:10 AM

Is it interfering with your throttle when the brake rod hits the tank?

My brake rods do contact the tank at WOT, but they don't adversely affect anything.

1 Bad STi

10-30-2003, 02:01 PM

Not interfering, just was having a problem with brakes engaging when full throttle, but i have seemed to fix it, these linkages are super finicky.

ALJR

11-14-2003, 09:29 PM

Originally posted by 1 Bad STi
Hey Guys, Have any of you have the problem of your brake linkages on your mbx hitting your gas tank? I cant seem to fix the problem. Please help!

my brake linkage was hitting my fuel tank when i was at full throttle. i fixed this by putting a slight bend in both my brake linkage rods...

1 Bad STi

11-19-2003, 09:23 PM

What aftermarket bodies fit the Ultra MBX pro, thanks

illbreakit

11-22-2003, 12:47 PM

My front brake did that, it hit the tank mount. I slightly bent the beake acctuating arm on the diff up till it was just undernieth the top plate and then trimmed about 1/8 off the front brake linkage.

microrcdude

12-31-2003, 10:11 PM

Originally posted by 1 Bad STi
What aftermarket bodies fit the Ultra MBX pro, thanks
I think prolines crowd pleazer will fit if you trim it a little bit.

monyet fangkeh

03-08-2004, 09:04 AM

hi...
im saving my money to get a mbx. i saw in my lhs, they has this ultra mbx rtr. i did my research and the mbx is the old version. its not the mbx pro. what is the diff between those 2? i know it might be better getting the mbx pro instead the mbx. but my lhs sell it really cheap right now.

also i really want to know if the ultra mbx has steel spur gear and i saw the pic at ofna.com, it looks like that the shock is threaded.

if i am getting the ultra mbx, what the first hop up to increase the handling or make the car more durable? i dont need eye candy stuff, im just gonna bash the hell out of it.:D

thank you very much

aryo

cbr74

03-08-2004, 09:48 AM

The Pro has kick-up chassis, front brace, better shocks, better turnbuckles, Force .25 (instead of Force .21), different wheels/tires, different body.

I upgraded an old Ultra MBX R2 to Pro status and above and it's a very decent buggy.

The first things to upgrade are the steering servo and the shocktowers. SS R/C makes some excellent towers for the Ultra buggies... I haven't bent one yet.
http://www.ssrcracing.com/ofna.html

monyet fangkeh

03-09-2004, 11:29 AM

Originally posted by cbr74
The Pro has kick-up chassis, front brace, better shocks, better turnbuckles, Force .25 (instead of Force .21), different wheels/tires, different body.

I upgraded an old Ultra MBX R2 to Pro status and above and it's a very decent buggy.

The first things to upgrade are the steering servo and the shocktowers. SS R/C makes some excellent towers for the Ultra buggies... I haven't bent one yet.
http://www.ssrcracing.com/ofna.html is the mbx has steel spur gear? if not, thats is the first thing im gonna buy. after that i'll get the steering servo. im not gonna use the radio from the rtr cos i've got my xs3 for that.

i cant get any mbx type except the mbx rtr. cos that is what my lhs has. my other choise is inferno 7.5 sport. but i toward the mbx cos its cheaper.

cbr74

03-09-2004, 12:24 PM

Yes, it has a steel spur.

xtreamrush

05-20-2004, 07:01 PM

I bought a MBX pro about 2 months ago and I love this buggy. Its even better since they put the .26 on the buggy. Great engine and verry powerfull.

xtreamrush

05-20-2004, 07:06 PM

oh. Another thing is that i have never seen a vehicle to withstand such gruesome punishment that i have unfortunatly have happen to me. Lets just say a buggy going 40+ mph and rough railroad tracks dont mix!!! It looked awsome, but it hurt too watch!

Devious_Mindz

06-17-2004, 12:41 AM

Well i too just joined the Ofna crew.....

I got some pics of her up Here (http://www.deviousmindz.com/rc/index.htm) Gonna change up a few things....
So what's the 1st suggested upgrade?

racersnow2

06-25-2004, 07:31 AM

1st is radio equpment if you are still running stock,

racersnow2

06-25-2004, 07:35 AM

did anybody on here convert there mbx into a monster? if so any spur gear change,

-=ADA$=-

06-25-2004, 03:25 PM

Terry

11-06-2004, 08:06 PM

Can you mount the wide 9.5 violator or lx comp arms on the MBX? What else would be needed besides the arms and cvd's?

Terry

11-07-2004, 11:11 PM

Will the Hyper 7 bodies fit the MBX? If not what will besides the MBX or ultra series?

Fatdaddy

12-04-2004, 03:33 AM

my friend has a MBX, and whenever he takes a good hit on the car the motor shifts. or even if it is run around a bit then brought back to the bench. the motor screws are very loose. whats the matter with this thing?

buttrickz

01-21-2005, 01:29 AM

hey yall new to 1/8 buggys but i do have a hpi rush that i put a hyper in and a old rs4 my bro gave me and i got the mbx off ace-hobies. only two question for ya people. well i got the 2 speed b/c i have a large park that could handle my rush with the hyper so i figure i could handle a 2 speed with a fantom .27. umm other than that ui have been reading about this whole kick up problem?!?!?!(if thats what ppl want to call it)i was just wondering where i could get the lx pro chassis. i thank you all and i am already having fun with the fantom had a great break in and i love the way this buggy handles anything...bout to start real jumps.....steve

PCC

01-22-2005, 01:39 AM

You can always find someone who wants to sell the parts to convert your buggy to one with kick-up. I have a setup that I can sell you if you are interested. It's from the Worlds2 kit.

Mirage one

01-22-2005, 06:10 PM

You can always find someone who wants to sell the parts to convert your buggy to one with kick-up. I have a setup that I can sell you if you are interested. It's from the Worlds2 kit.
Hi guys, i just picked-up an mbx ultra pro and instead of a force .25 in it it has a force .26, even if it said .25 on the box. What gives, just curious. :)

bug_e_guy

01-25-2005, 11:16 AM

If you plan on goin monster way you HAVE to change spur, consider that in buggies its i think 44 T and in MP its over 60T, but i also have great problem, ive cracked fuel tank in stock MBX R2, what the part number for spare?? And maybe you know whats the part number for shock seal set?? I need the four bladders. Maybe some better ones??
Hey guys, i have an MBX with an O.S. Max RZ, 15 tooth cluth bell, running a JR3 radio and a few more hop-ups. Nothing major...but runs great and extremely fast. No complaints here. I also bought what i think is a Monster Blazer (second hand). The Blazer is/was set up exactly like my MBX, with the exception of the a-arms, steering knuckles and tires. The problem i'm having with it is that i can't keep clutches in it. I'm assuming that i either need to go with a 2-speed tranny or change the spur gear and clutch bell. Any help would be greatly appreciated. Thanks

trojanman

02-23-2005, 12:41 AM

i have a ofna ultra gt lx and for some reason the back tires arent getting very much power and the front are goin crazy wiht power?:S:S:S:S what do i do????

supralative

02-23-2005, 10:50 PM

Newbie to nitro probably.
I am looking at the OFNA MBX Pro RTR
http://www.ofna.com/UmbxPRO.html
I am coming from 1/10th scale electric stadium trucks.
Is this a good car to start on and progress up with it? Are they pretty durable?

trojanman

02-23-2005, 11:59 PM

supralative

02-24-2005, 12:20 AM

thanks
what are the things i need to look for in these cars
like the pluses and minuses of similiar cars in its class
chassis, drivetrain,
i dont know what seperates each car from what
i know about 1/10 trucks though hehee

2mcgrath

03-11-2005, 01:16 PM

will the pbs aarms from the ultra mbx comp fit the ultra lx comp?im building one up and im using the lx comp chassis and gas tank and stuff..but i want the pbs suspension..or will any hyper 7 stuff fit the lx comp

xtreamrush

03-20-2005, 02:05 AM

I would just try to put the pivot ball suspention. Its smoother than anything i have ever driven. I have the rear pivot ball suspen. on my buggy.

I just put a M8 Radio system w/ the ABS feature, and a Picco 9 port Turbo .21 in my MBX Pro. I tell ya a picco engine is the way to go. This engine SCREAMS. I cann't belive the punch in the low end and the speed at the top end. And im only running on 15% nitro.

Oh, to supralative, I defenitly suggest the Ultra MBX Pro. I have beatean the crap out of this buggy. I even hit my mailbox pole at full speed and nothing happend. Maybe luck but OFNA knows how to build a buggy. But deffinetly upgrade the Electronics.

Happy Racing :cool:

xtreamrush

03-20-2005, 02:12 AM

I also have a rush. i put my old buggy engine in it because it was just sitting there. So i hade some fun!

Heres a pic.

LOOK OUT! :eek:

2mcgrath

04-01-2005, 01:28 PM

ive also been looking at an mbx r2 kit are they any good??and also why are they so much shorter than the other buggies..the length on it tower hobbies says is like 14.9 inchs..where the hyper 7,lx comp and others are 19 inchs or longer?

PCC

04-02-2005, 01:56 AM

Tower Hobbies is wrong. The Ultra MBX is about the same size as all the other 1/8 scale buggies out there. Maybe they meant width or they meant 19.4"?

2mcgrath

04-04-2005, 12:11 AM

thanks for the help..i found it at another site and they say 14.6 on length..then at ace hobbies they say 480mm which is the same length as the lx comp...would the mbx r2 make a good race buggy?i like the price on the kit $180

PCC

04-04-2005, 10:44 PM

I don't think this particular buggy is competitive (I don't know that it ever was to begin with). As a basher it's good because of the price. It's pretty tough for what you can do with it but racing it would put you at a disadvantage before the race begins.

You know what they say, though: it's 80% driver, 5% the car, and 15% luck.

2mcgrath

04-06-2005, 02:10 PM

yeah thats true..im looking at getting into racing since we have some local tracks popping up..so i guess i will look at something else..because i want a buggy with a pretty good price that will be a racer..i have a lx comp now and would like something alittle better..thanks for the help

flipster

06-17-2005, 12:36 AM

I've got an MBX with only about 1/2 gallon through it and it's acting like something is binding. It's not able to put much power to the ground and after about 1/4-1/2 tank it can't even move. When I rev up the engine I see the clutch bell and spur gear move, but not much. I replaced the center and rear diff with ones out of my LX parts car (actually put the entire rear section out of the LX in the MBX) but it's still doing it. I suppose I could do the front, but I can't picture how that would cause it to bind like this. Any ideas?

fuzzypumpkins

06-20-2005, 04:00 PM

can i fit t-maxx tires and wheels on the ultra mbx comp?

4rcphr33k

06-27-2005, 02:25 PM

Anyone know of a Truggie conversion kit for the MBX r2?

GitRDone

06-28-2005, 02:42 AM

Hello there friends, I am a new owner of the OFNA Ultra MBX and now have to purchase My own engine... What would be a good engine to put on this buggy that isn't going to break my pocketbook... Derek

fourwheels0

07-26-2005, 10:21 PM

Hello there friends, I am a new owner of the OFNA Ultra MBX and now have to purchase My own engine... What would be a good engine to put on this buggy that isn't going to break my pocketbook... Derek
os 21 rg real good engine and at $109 you can't beat it.

rcnoob1488

08-03-2005, 10:17 PM

Sorry guys, I just don't have time to read this entire thread even though my questions might already have been answered. But if you are kind enough here they are...

1. Ok, my neighbors are aholes and they all complain about the noise. Is there any way I can quiet down my OFna ultra mbx with a P4 .21? Maybe a quieter pipe than stock (and I want to change my stock pipe for performance reasons as well- im thinking a Tsais Custom since its quieter supposedly, but im not sure about it's performance) Anyone try the vantage graphite tuned pipe along with the Force P4 yet?

2. What are your needle settings for a hot humid day? I live in NY where its really hot during the summer, and im a newb when it comes to tuning.

3. What are the most essential mbx ultra rtr upgrades? must haves (besides steering servo upgrade, i know lol)

4. Does anyone sell a kick up chassis for this car? i can't find any retailers.

5. What about different shock towers for the ultra mbx, anyone know any retailers?

Thanks a bunch for any advice you can give to a newb like me..it will be greatly appreciated.

fourwheels0

08-03-2005, 10:49 PM

rcnoob1488

08-04-2005, 12:01 AM

6 volt hump pack and the pcr parts will fit. stock shock towers should be fine.

pcr really? on ofna.com it says for all pcr parts that they only fit "all ultra comp models", doesnt say anything about ultra MBX though. Are ultra comp and ultra mbx parts interchangeable?

fourwheels0

08-04-2005, 11:24 AM

the only difference in the ultra lx comp and the ultra mbx comp is the ultra mbx comp has pillow ball suspension in the front and electric start. they are both ultra comp's. yes almost if not all parts are interchangable. look for hop-ups for the mbx and you'll see all the stuff you can get. hope this helps. keep us posted on how you make out. see ya

mbxed

08-19-2005, 04:30 PM

What Is the latest version of the chassis? I have a ultra worlds II that I have upgraded to PBS. I have ordered an MBX chassis with the new radio tray. It has cost more to do it this way but what the heck. I like working on it.
ed

nitrohouse

08-19-2005, 04:45 PM

The chassis you have should be the same, as they have made very few changes until the Comp's came out...The Comp's are using a NEW disign for the chassis. And your right it will be expensive to keep upgrading the same buggy...

mbxed

08-19-2005, 08:39 PM

I have a mbx5 I race and I like to practice with the ofna, it makes the mugen seem much easier to drive. What is different with the comp chassis? Do the CVDS for the front fit the rear also?
ed

mbxed

08-28-2005, 06:36 PM

I ran the new chassis at the track yesterday. It drove pretty nice. The mbx chassis doesnt have the kick up that the worlds II had. Which lengthens it a little. I think I'll keep her.
ed

steveo280

09-30-2006, 07:51 AM

hey guys, I am brand new to this so please forgive me if I'm posting this in the wrong place, I just bought my first nitro r/c an ultra mbx comp, I really hate this force 26 engine, does anyone know if you can put a trx 3.3 in this buggy and if you can will the easy start be compattible with ofna's power start? thanks in advance for any help.

steve

azizhousecallz

10-05-2006, 02:14 PM

OFNA MBX ULTRA 80% PLUS!

here is what you get:

HYPER 21 with great compression

2 sets of on road tires (1) foam 1 (rubber)
2 sets of off road tires also in great shape
4 new heavy duty CVA joints still in the box $120.00

THS Pipe w/ header also the original pipe w/ header

Dual steel brake disc / original brake disc system

JR servo (1) and Tower hobby high torqe servo (1)

1 complete set of shocks w/ extra springs

1 body 2 extra wings, some tools , extra clutch bell, light w flywheel (blue)
complete set of upper aluminum replacements

This buggy is very fast and in top shape, will run with your radio and recv'r. just take it out of the box put your gear in with some gas and go.
I will also include a 1200mah battery pack installed. any questions let me know! This is an adult owned buggy i have been doing nitro for 6 years and electric for 9 i have had HPI, Associasted, Savage, Ofna, Duratrax, and have loved them all. You will really have a great time with this buggy and you will get plenty of life from the HYPER 21. GOOOOD LUCK!!!! ITEM IS USED AND SOLD AS IS. IN GREAT WORKING ORDER!

PICTURES

http://www.geocities.com/azizhousecallz/P1010003.JPG

http://www.geocities.com/azizhousecallz/P1010005.JPG

any questions email me@ craigcclark@hotmail.com

Asking: 200.00 + shpg.

moneypitmbx

11-13-2006, 02:34 AM

which motor has a better kick? im able to get the HTM motor for free or really really cheap, what to do??
Thanks

moneypitmbx

11-13-2006, 02:48 AM

i love my MBX, took it to the track today and it did really for somebody that cant drive for Sh1t, i was actually impressed that nothing broke cuz i was balls out hittin them triples, hay bales, fences, my buddys ankles, and a few other things.
But seriously this things built stronger than i thought it would be.

moneypitmbx

11-16-2006, 09:48 PM

Does nobody else run these cars anymore? Cuz this forum topic is DEAD

wishingfortlt1

11-21-2006, 09:57 PM

nah..............

heres my mbx r2............

orion wasp .28, hard coated threaded shocks, werks power clutch...

i just added moabs today...nice lookin tires

moneypitmbx

11-22-2006, 11:42 AM

nah..............

heres my mbx r2............

orion wasp .28, hard coated threaded shocks, werks power clutch...

i just added moabs today...nice lookin tires

How do you like the wasp .28??

wishingfortlt1

11-22-2006, 01:46 PM

did my pics even upload?

yeah, its a great engine, really good low-end

moneypitmbx

11-24-2006, 12:56 AM

no your pics didnt load.
Im trying to break in an .28 wasp right now, i might leave it in my mbx sounds good so far starts sputtering alot bout with bout 1/4 tank left, i just finished my 3rd cycle. ill start driving it tomarrow.
I herd these motors are hard to tune? Is this true? I guess ill find out tomarrow huh.

wishingfortlt1

11-24-2006, 11:33 AM

here are the pics........

moneypitmbx

11-25-2006, 09:42 PM

Nice

moneypitmbx

11-26-2006, 09:05 PM

wishingfortlt1

11-30-2006, 11:36 PM

heres my other mbx...your gonna like this one, hehe.....
here is the spec sheet:

ofna ultra mbx r2
axial .28 spec 1s big-block
tisias alloy tuned pipe
HPI R40 centax style clutch
front polished CVD's with dust boots
lunsford titanium shock springs
SMD designed steering damper
SMD front and rear upper chassis braces
SMD designed fuel cooling system with filter
triple disc vented brakes, from the ofna hyper 7
front and rear sway bars, with SMD links in the rear
proline road rage tires
black ofna hyper rims
jammin products truggy wing
proline crowd pleazer body

wishingfortlt1

11-30-2006, 11:37 PM

more pics........

wishingfortlt1

11-30-2006, 11:38 PM

and more........

i have yet to even start the engine in this one, but im shootin for 65-70mph....

moneypitmbx

12-01-2006, 08:36 PM

Ya that is one bada$$ ride right there!! the color is real nice. what kind of set up is that on the clutch bell??? You gonna run that strictly on the street or what, cuz that is one sweet ride.

wishingfortlt1

12-04-2006, 02:10 AM

thanks man.

i have yet to run either of them, the weather here in ohio hasnt permitted me to do so, so i'll have to wait, it would be immpossible to break in a engine in 25 degree weather, lol!!! ill keep you posted, and im glad your having good luck with the wasp .28, that makes me feel better. i cant wait to see what the axial is gonna do in my on-road mbx, i heard its a pretty strong mill, especially in the low end....should do good when i put a 22t pinion in the mbx...im shootin for 70mph with this beast, so good bottom end will be very helpful in gearing the thing through the roof!!!!

moneypitmbx

12-09-2006, 05:15 PM

hers a few pics that i got taken at the track in Hemet, of me BASHING around the track......lol

http://sicktrends.com:8080/rccars/russ/

Ed Mick

12-10-2006, 12:36 AM

What buggy is that?? lx comp??

wishingfortlt1

12-10-2006, 01:51 AM

ahhhh...you got a MBX comp, mines just a MBX R2, but im gonna update my shock towers to the new lx/mbx 4mm ones, and im looking to upgrade to the hard-coated chassis, mine is just the flat, blue one.....i bought my son a new lx comp 2 for x-mas, heres some pics of all our buggers....i took em before i finished my MBX's, so they look a bit different than my previous pics (engines and stuff) the other car is my racer, a sportwerks mayhem pro.....excuse the tires on it, i just threw those ones on there for looks...i dont dare race with those tires...lol

great pics, moneypit!!!

Ed Mick

12-10-2006, 06:02 PM

http://i142.photobucket.com/albums/r89/eddiemcginn/P1010142.jpg

moneypitmbx

12-10-2006, 09:50 PM

went to the track today and man it was muddy out, we just had a good rain storm sat. nite. Now i got to figure out how to clean this thing.......LOL

Ed Mick

12-10-2006, 10:33 PM

are you from So Cal moneypit?? It actually started raining at revelation raceway saturday night.

wishingfortlt1

12-10-2006, 11:55 PM

ed mick, im diggin the paint on that lx, looks sick!!!

Ed Mick

12-11-2006, 12:31 AM

Thanks, A guy at the LHS painted it. he's really good.

balang_479

12-11-2006, 04:50 PM

What is all that Maze of fuel tubing for?

faisalbasha

12-11-2006, 05:45 PM

i got a tnx and i put an axial 28 engine. im just not getting the full power out of the engine. anyone know why that might be the case?? i know it could take the tnx flying through the air.

moneypitmbx

12-11-2006, 07:39 PM

are you from So Cal moneypit?? It actually started raining at revelation raceway saturday night.

Ya im near you. I actually live up in Running Springs(near Bigbear)
I usually spend my sundays at the HEMET track, but they were closed cause it was flooded too badly.
So i wound up at thunder alley in Beaumont, it was flooded there too but the guy let us BOGG around on his track all day.....Good fun :)

wishingfortlt1

12-12-2006, 03:29 PM

if your asking about the tubing on my black MBX, its a fuel cooler, actually lowers the temp of the fuel a few degrees at speed......cooler,denser fuel=more power.

as for the axial .28, i have had no problems with mine, just make sure you do a thourogh break in on it, as with any other engine

moneypitmbx

12-16-2006, 11:12 PM

Does anybody make a good aftermarket body for these, mine about done...
Im lookin for something with a little different look to it.

psiturbo

12-17-2006, 03:23 PM

Got the Wasp 28 broke in and tuned today. I took it to the track and DAMN!!!!!!
bottom end on this thing is amazing.
And i also must say the MBX is one tough car, i beat tha cr@p out of this thing today hardcore bash session, and nothing broke but a motor mount.
I must say for a first car this thing is perfect for someone like myself with no skills who want to tear stuff up.

You said it man.

Thats why I dont understand all these people talking about shimming the gears bla bla bla.

I will state my experience one more time. I bought an OFNA Ultra LX for $75.00 from a kid who got into dirt bikes. The thing needed some TLC on the shock towers, new oil on the shocks and some adjustment here and there. That buggy since then has gone thru an OFNA Force .25, a Force .26, WASP .28 and a Sportwerks .26. Recently got my LRP .28 Spec 2 (6 port) and will test soon.

Never and I mean NEVER I have had any issues with the diff gears or any other parts besides the usual parts that break from serious crashes and miscalculated landings.

The ONLY thing I dont like is it has no rear chassis brace and ALL Force .25 .26 are crap. I had to customize mine. I even weighted it against the Sportwerks and the Ultra LX resulted to be lighter.

I may have been lucky for a buggy that cost me $75.00. If you get your hands on a OFNA buggy, sell the Force engine on EBAY, get a SH, WASP, Axial, XTM 247 and you are all set for some serious bashing.

http://i93.photobucket.com/albums/l70/psiturbo/ULTRA/UltraLX2.jpg

Here is another with the Sportwerks .26 and a 2 chamber tuned pipe. It riiiipppppss!!! Note: You can see the customized chassis rear brace.

http://i93.photobucket.com/albums/l70/psiturbo/ULTRA/UltraLX3.jpg

moneypitmbx

12-22-2006, 09:25 PM

You said it man.

Thats why I dont understand all these people talking about shimming the gears bla bla bla.

I will state my experience one more time. I bought an OFNA Ultra LX for $75.00 from a kid who got into dirt bikes. The thing needed some TLC on the shock towers, new oil on the shocks and some adjustment here and there. That buggy since then has gone thru an OFNA Force .25, a Force .26, WASP .28 and a Sportwerks .26. Recently got my LRP .28 Spec 2 (6 port) and will test soon.

Never and I mean NEVER I have had any issues with the diff gears or any other parts besides the usual parts that break from serious crashes and miscalculated landings.

The ONLY thing I dont like is it has no rear chassis brace and ALL Force .25 .26 are crap. I had to customize mine. I even weighted it against the Sportwerks and the Ultra LX resulted to be lighter.

I may have been lucky for a buggy that cost me $75.00. If you get your hands on a OFNA buggy, sell the Force engine on EBAY, get a SH, WASP, Axial, XTM 247 and you are all set for some serious bashing.

let me know how that LRP motor works out for ya, i was looking at one at th LHs today.

wishingfortlt1

12-22-2006, 09:56 PM

i still got the original sw.21 in my mayhen pro, its had about 6 gallons through it, and its still a beast!!! that car will still rip off 45+mph passes and hold a perfect tune all day long, i run the ever-lovin' bags off of that car, and it still wont break!!!

oh, btw, i got the orion wasp .28 brokrn in in the MBX, but as i was tuning for power, one of the clutch shoes decided to explode and ended my day of fun...ill keep a update

moneypitmbx

12-27-2006, 01:07 AM

my wasp 28 is dead :(

wishingfortlt1

12-27-2006, 02:25 AM

uh-oh!!!!

please tell why....

moneypitmbx

12-27-2006, 12:57 PM

uh-oh!!!!

please tell why....

well i was at the track the other evening, and the car wouldnt stay running, so the local pro guys strolls up and says my cars way too rich.
Well being the beginner i am i listen to him and lean out the top 1/4-3/8 turn.
Tha car runs fine till it got up to temprature then went all crazy(at this time im the only one on the track) so i TRY to putt it around the track back to the pit area, and it flips over on one of the jumps. I ran out to get it but by the time i got to it, was tooo late i guess.
Now theres almost no compression.
Lesson learned Dont trust anyones opinion who dont know yer motor.
So i dug up the stock .26 and ill run that till i get my wasp back.
its gittin a new piston sleeve, port job and what ever else the guy said he was gonna do to it.

wishingfortlt1

12-27-2006, 01:19 PM

well nitro is trial and error, sounds like it was wayyyyyyyyy too lean, but a new piston and sleeve will cure it right up, and remember, get your self a nice temp gauge and keep the temps under 270 and you will get long life from the engine

moneypitmbx

12-27-2006, 02:04 PM

moneypitmbx

12-28-2006, 12:46 AM

What plugs are you supposed to run in the force .26????
i put some new ofna medium plugs in there tonite and they lasted bout 1 tank, and fouled, so i put my old one back in and ran it all nite.
Its been a while since i ran this motor, and i dont remember.
It could of been a bad plug i guess

Thanks,
Russ P

tl_ke_racer

01-07-2007, 08:26 PM

Im considering getting a Mbx compition buggy rtr from tower hobbies, I just want know if it would do fine as a basher and are parts readily available for it on towers? and if not whats another buggy that would suit my needs.

moneypitmbx

01-08-2007, 01:32 AM

ive had mine for 3-4 months now and i beat the cr@p out of it. The only thing ive broken so far is 1 wing mount. mind you this was my first car and im trying to keep up with friends on the track, who have been in the hobby for YEARS. so im beating up this car ALOT.
So for a first car its AWESOME. you can get parts for these cars at almost Any hobby shop.

cosmicpossum

01-08-2007, 10:43 AM

moneypitmbx

01-19-2007, 12:22 AM

im gitting the stock .26 modded, it should be done this weekend. I cant wait.

psiturbo

01-22-2007, 04:50 PM

I got the WASP .28 and it has ridiculous torque. The power band is not as smooth the Sportwerks .26.

On my .28 it does not like to run higher than 230 degrees. I have used 20 and 30 percent and it likes better O'Donnell 30%.

I have had a blast with the engine, just make sure the carb is seating tight against the crankcase. Its been more than 20 tanks and still running on the same factory turbo glow plug. By the way it consumes fuel like a V8.

Now that piston and sleeve are rendered useless try to pinch it.

Use a small C-Clamp. Place it in the oven at 250 degrees or on the stove at medium high with a lid to cover and keep the heat.

Once you are done doing the pinching polish the interior of the sleeve with a brass bit..

http://66.77.255.87/Images/DREMELACCESS/535_D/WEB_LG/535_lg.jpg

After that polish it like a mirror with Blue Magic and a wool dremmel bit. ( I could not find a picture)

On the piston side do the same and try to remove any visible lines and follow up the same procedure.

The piston and sleeve are toast, but you will be amazed how this cheap trick works wonders. It takes some trial and error to find the perfect tolerance... practice makes perfection. I have revived a few Force 25 and 26 and make it work for at least one more gallon of bashing.

moneypitmbx

01-22-2007, 10:10 PM

psiturbo

01-23-2007, 09:12 PM

I posted a DIY (sleeve pinching) w/ pics under Nitro Monster Truck main thread under REVO.

Page 75

moneypitmbx

01-24-2007, 12:08 AM

awesome im going to try that one this weekend

XXWoodmanXX

02-04-2007, 11:15 PM

The MBX is a great starter buggy! Best part is most of the parts are interchangable with the Hyper 7 and most of the other buggies so you can always find parts cheap. I've got a modded Ultra MBX I race that's been really put through the paces and never seriously damaged (except one trashed front diff.....my fault). You can pick up parts for it easily on EBay.

Amen to that! Along with these interchangable chassis listed are the 9.5, UltraLX Comp, UltraLX Pro, and Comp 2 :D I got a full set of rear A-arms (upper, lower, 17mm hubs, rear uprights, wheel axles, and dogbones for just $7. THen I got the 4 rear bearings for $4, and a full set of Comp 2 rims/tires for $22, and VOILA!!! I completed my Ultra LX Pro! :D

moneypitmbx

02-23-2007, 03:21 PM

put a picco 28 in my buggy this weekend to bash around the local track. LOL
Damn way too much torque, burnt up a new ring gear in my rear diff, i think ill take out the 13t clutchbell and put in a 15t to see if it will take out some of the snap when i throttle it,
But what a fun motor to play with.

chef47203

02-23-2007, 11:01 PM

I have just bought a mbx 9.5 and was wondering why when i roll the front tires the back ones do not turn. I had a savage and when i turned the front the rear turned too. so i didnt know if the buggy was maybe something like a all wheel drive or what.

moneypitmbx

02-25-2007, 07:56 PM

moneypitmbx

03-18-2007, 12:50 AM

the MBX is dead broke or bent almost every thing.
This is what happens when ya have a runaway, at over 50mph anh hit the tire of a parked honda 100yards away!!!!!

jandread

11-28-2007, 07:30 AM

Hey everyone,

Im new to the buggy scene and I was wondering if anyone new of some hopups i can do to this buggy? I just got it off of a trade with someone and was looking to beef it up. Here are a few questions that I have:

1. Is the front suspension supposed to be softer than the rear?
2. Are there springs I can buy for this that will stiffen it up?
3. What other OFNA buggy is compatible with this one for hopups?

Any other advice that could be given about this truck would be appreciated.

thanks!