HPI R40 forum

[slowmt]

So how do yall like to r40. I want to get a competative touring car and was looking at teh kyosho v1 rrr, r40, or a serpent. what do yall recommend?

[Saboteur]

All are great, but each car will handle differently out the box and will drive a different style. The RRR is equipped, but the R40 can be raced box stock and for optional tuning some LW upgrades for a total of $80 will help the R40 pick up the pace easily as well as give you more tuning. For starters, the graphite shock towers, LW 2speed .8module, and both LW shafts is what I started on the R40 and indeed it's faster than B4. Sure the gearing is lower, but with much less rotating mass on the 2speed and less weight on the drivetrain the car runs a lot faster. Serpent is great but only if you have good part support. Fairly moderate for price. Kyosho may be a lil higher, and the R40 is cheap. I'll probably run the 8th onroad more because my LHS has parts for it in stock better than the R40. I'm at the point where to say my R40 is great, but comes down t the hobby, planning on racing, and buying a real car at this point I'd rather have two rc cars instead of many so the Mugen and R40 stays. :)

[Saboteur]

PS-For the price of the VoneRRR you can get an R40 and buy some of the optional upgrades for it. I'd test the car stock though as the R40 out the box handles pretty well.

[slowmt]

Thank you all for the inputs!

[KronicRacer]

i agree with sab, go with what ever the shop supplies the most. you cant go wront with either 3 of those choices.

[wallaj232]

the r40 is a nice car but i dont think the book tells you the correct way to build the clutch for proper engagement. because i had to fight with my clutch just to get it right thr firdt time. but i finally got it and selling my r40 now

[excaliba]

whats better between the r40, mugen mtx3 and ntc3 ? :eek:

[RCRevolution]

well if you guys check out the nitro forum I wanted a race ready touring car.

I have made a final choice on a HPI R40

now i need to get to all the nitty gritty...

Pipe I have picked out, a cheap but good RD touring car pipe $37 off ebay
and the starter box is also choosen simple but effective duratrax starter box

now I am going through hell trying to pick a good, but not too expensive radio, remember this is for club racing, not pro racing so I do not need a $300 radio.

the engine is also a stumper, but I might get a HPi 12R XS for getting used to the car.

the body I have choosen either a Proline Nemesis, or Mazda 6

I already have servos for it.

so you guys got any tips on the radio or a subsitute engine (under $150 for now)

for the radio I have been looking at these three, but of course not limited to them.

3PM
JR XS3
DX3 y Spektrum

[wallaj232]

[QUOTE=RCRevolution]well if you guys check out the nitro forum I wanted a race ready touring car.

I have made a final choice on a HPI R40

now i need to get to all the nitty gritty...

Pipe I have picked out, a cheap but good RD touring car pipe $37 off ebay
and the starter box is also choosen simple but effective duratrax starter box

now I am going through hell trying to pick a good, but not too expensive radio, remember this is for club racing, not pro racing so I do not need a $300 radio.

the engine is also a stumper, but I might get a HPi 12R XS for getting used to the car.

the body I have choosen either a Proline Nemesis, or Mazda 6

I already have servos for it.

so you guys got any tips on the radio or a subsitute engine (under $150 for now)

for the radio I have been looking at these three, but of course not limited to them.

3PM
JR XS3
DX3 y Spektrum[/QUOTE
when i started i didn't know anything about centex clutches so i just built it and forgot it. my acelleration was weak even with an RB V12 engine. then i fought with it for a long time and one thing that worked for me was a spacer between the large clutch bearing and the clutch bell it self. i also bought my JR XS3 radio off of ebay.

[wallaj232]

not selling my R40 anymore got keep it. very happy with it now

[nitrothugg]

dont drive like me! first the nasty dumpster incident then this

click here (http://forums.radiocontrolzone.com/showthread.php?t=182275&page=3)

[fastharry]

here's the new CVEC roar legal pipe on my r40..fit like a glove....really well made...(unlike the RD logics pipe.....).....I'll keep you posted how it runs...

http://img.photobucket.com/albums/v209/fastharry/cvec1.jpg

[k_bojar]

here's the new CVEC roar legal pipe on my r40..fit like a glove....really well made...(unlike the RD logics pipe.....).....I'll keep you posted how it runs...

http://img.photobucket.com/albums/v209/fastharry/cvec1.jpg

Harry - I wanted to ask this on rctech, but what is the "T" joint for??

[k_bojar]

for the radio I have been looking at these three, but of course not limited to them.

3PM
JR XS3
DX3 y Spektrum


I'd go with the DSM version of the JR radio...Once you go DSM, you really don't ever need to worry about frequency conflicts on race day ever again...Besides, the built-in failsafe is pretty nice "feature" of the DSM

[ritchies rc10gt]

hey guys.i just got an R40 off ebay with no motor.i got a mugen X12 turbo for it.i also got a front one way diff for it.should i leave the diff in it or try the one way from the start?how good is this car and how good does it handle?any "must have"durability hop ups i need for it?or is it good in stock form?i have a ntc3 also that i really like.im not much for belt drive cars but a friend said its very easy to change the belts on this car so i got one.

[nitrothugg]

where did you get the aluminum rear brace?

[hd_nitro]

Harry - I wanted to ask this on rctech, but what is the "T" joint for??

Id guess pressure relief / smoothing.

[fastharry]

I got the idea from the guys running the mugen fuel pressure canisters on their cars.......supposedly helps with the exhaust pulsations......

[fastharry]

where did you get the aluminum rear brace?


thats part of the optional HPI sway bar kit available overseas.....

[ritchies rc10gt]

well i got my r40 finished and finaly driving it.so far im sorry to say but i like my NTC3 better.but that might change once i get used to the car.so far i had to replace the chassis and carbon fiber top plate.ebay seller forgot to mention the car was wrecked hard at one time.it seems to handle alot better with no body on it.right now it has a camaro body on it,gonna try a stratus body as thats what handled the best on the NTC3.are there any other good bodies for this car?i like a car that can actually turn at high speed like my NTC3 can.i also put a front one way diff in it.i dont really care for it though but im also not used to it yet as my NTC3 had diffs.gotta learn to squeze the brakes easy.for some reason the center belt doesnt seem tight enough,might have the wrong size bearings on the tensioner.i threw it off once so far.damn little rocks keep getting stuck in the front and rear belts.the brand new front belt has 2 tears in it already from 6 tanks of really driving it.its a nice car though,im just not a belt drive person.it is fast though,gonna try some different gearing tomorrow.hopefully i can run the gearing the way i have my NTC3 setup.i like to run the lowest first gear and the highest second gear.

[C0NTENDER]

Just in case you don't know, the HPI challenge is going on the weekend of Aug 13,14, so if you want to have two fun days of racing, and your in driving distance of Deleware, and have the time, you should come out. It's not too late to send in an entry form. These events normally get 200 entries and it's just a fun weekend of racing with prizes. There is a 200 entry limit so if you send in your entry form and your number 201, you might not get in, so if you plan on coming, get your entry in quick. The r40 (nitro modified) looks like it's going to end up being the biggest class, that weekend with some good competition.

[Saboteur]

Been away at camp and now back at home. I went to the track to run the R40 again and she runs nice. It hooks up well with no oil in the rear diff. I'll probably pick up new pinions to experiement with the gear ratios. Pretty much I have quite a tall ratio, however will try a 21T or 20T first, and a 27T or 26T in 2nd.

[Light003]

Where's the cheepest place to get the LW2speed.

[Saboteur]

The LW 2speed should about $52-$57 dollars. If your LHS has it in that price range get it. It shouldn't be any more than $57.

[the-one1]

Finally got a motor for my r40. Got the car last x-mas, and got an .18 cv-r with the starter box and a cheap pipe and header just last week. Finished breaking it in, and the thing just screams off the line. I get 4 wheel burn outs. Handles great. Way better than my rs4 3 and N4tec.

[Saboteur]

Sounds good man. Did you get the yokomo SE exhaust, RB, or serpent? Post pics if ya can. :)

[the-one1]

I'm saving up cash now for a good pipe and header like the yokomo. All I got on it now is a tower hobby SE header that had a showdown with a hammer :) Doesn't quite fit but I made it fit.

[Saboteur]

Got any pictures? Worst case scenario you could've always gotten a OS .12TR and RD logics one piece pipe for $40.

[the-one1]

http://www.the-one1.sytes.net/gallery/albums/RC/r40%20out.jpg
Notice the beautiful header. :D The engine is not bolted in right now. Had a little mishap the other day. The wire to the throttle/brake server got shreded by the pavement and it got stuck at WOT.
Luckly I had steering control. I pointed it towards me, and I attempted to stop it with my foot. Kinda dumb at my part. Very scary when its coming at me at 40+ mph. :eek:
I missed it and it hit my 1:1 car wheel, bounce off and then I made it do doughnuts then I caught it and pinched the fuel line. Popped off the front shock cap, Bent the shock tower and cracked the bulkhead a little. I just pounded the shock tower back and will glue the bulkhead.
I love this motor so far. Consumes alot of fuel. More than my ntec 2.5 or t-15.

[Saboteur]

YEESH! :eek: I'm surprised you got that kinda header on there. Isn't rubbing on the pulley or belts? This is what the yokomo Gt4 header would be like. PS, as far as fuel ecomony goes, it's a .18 so naturally it will use up a bit of fuel.

[the-one1]

Not rubbing on anything. Like I said, it had a meeting with MR. Hammer. And Mr. Hammer got it into shape. :D
I'm ordering the yokomo header today. Can't wait.
Is that the .12/15 ss motor?

[Saboteur]

Eh, hammering is NOT good. Don't disform the pipe in anyway as it will hinder performance.

[the-one1]

Don't worry. The pipe is now decomissioned. The yokomo pipe is coming, just ordered it.

[Light003]

Is it possible to charge a starter box battery with a Duratrax parhanna digital charger? If so how.

[Saboteur]

Well first check if your charger can charge upto 12v batteries. My charger says it can do that so what you do is charge at .5 or 1amp. Depending on how much juice is in your box it will take an hr or so. I safely charged mine at 2amps no problem, but start with 1amp.

[Light003]

I don't think it will charge. I'll just hze to order a cheap one.

[Saboteur]

I hate those overnight chargers. My charger costed me $140, but it can charge all sorts of batts including the 12v. :) That big batt will be ready in an hr or less after charging it.

[Light003]

Thanks.

[the-one1]

Got my new yokomo header.
http://www.the-one1.sytes.net/Gallery/albums/RC/r40%20pipe2.JPG
http://www.the-one1.sytes.net/Gallery/albums/RC/r40%20pipe1.JPG
Had to slightly bend the header up <1mm to clear the rear pulley. Other than that, great fit.

[Saboteur]

Kewl. As long as it's not rubbing against the belt, your set. :)

[rcracermad]

Kewl. As long as it's not rubbing against the belt, your set. :)

Yo guys i will get my r40 on nov the 8th, as it is my bday then! I got one of the last ones at £99 and i just won a hpi .12r xs race engine brand new with an sg shaft for £62 on ebay inc air filter and plug! What a bargain! What are the best option parts for acceleration? :)

[Saboteur]

LW 2 speed (.8module not the 1.0)
LW shafts (2speed shaft and middle)

You will need both as that will really make the car come alive on acceleration and any other parts of throttle. The stock is pretty good too as its lower, however despite its taller gear ratio, the LW gears aren't far behind at all. Infact they seem to be just as fast. If I had the time I'd like to do a test, but I don't have all of the stock gears stuff.

[Saboteur]

Thought I'd bump this thread with updated some photos. :cool:
http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3001.jpg
http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3000.jpg
http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN2999.jpg

Mods done is a Venom failsafe, Ofna Centax w/HPI pinions and ofcourse strapped the Rody back in. The R40's drivetrain is noticably smoother on and off throttle than the CD3. The 2005 version will be out soon and that badboy has quite a few new upgrades.

http://www.hpieurope.com/graphics/kits/kitpages/817/box.jpg

http://www.hpieurope.com/graphics/kits/kitpages/817/chassis.jpg

http://www.hpieurope.com/kit-info.p...g=en&partNo=817

Comprehensive Features List
Chassis upgrades
#73110 New R40 Hara Edition Upper Deck (Woven Graphite)
New woven graphite upper deck repositions the electronic components for a lower center of gravity, increasing overall chassis performance.

#73925 New R40 Hara Edition Chassis
New chassis works with the new upper deck to achieve the optimum weight distribution of the chassis. Also allows the receiver battery to be mounted directly on to the chassis for a lower CG and quicker steering response.


Graphite shock towers
Shock towers machined from 3mm high quality woven graphite for strength and weight savings. Extra shock mounting holes and camber link positions are provided for extended tuning range.
#73089 Front Shock Tower A (Woven Graphite)
#73090 Rear Shock Tower A (Woven Graphite)


Lightweight transmission parts
#33401 R40 Lightweight 2 Speed Shaft

#33402 R40 Lightweight Middle Shaft
Lightweight 2 Speed Shaft and Lightweight Middle Shaft decrease drivetrain weight for quick acceleration.

#87173 Lightweight 2 Speed Transmission Set (0.8M)
Lightweight 2 Speed Transmission Set is lighter, which delivers increased acceleration and a reduction in the overall car weight for faster lap times. Also features a finer gear pitch for increased efficiency and quicker acceleration, and hard anodized alloy clutch bell gears for extended gear life. The gear ratios have also been revised for more punch and higher top speed.


Steering upgrade
#33403 R40 Steering Upgrade Set (Bearings)
Bearing Set for extra smooth steering response.

#75067 New R40 Hara Edition Aluminum Servo Mount
Aluminum servo mount provides a rigid mount for the steering servo, for increased steering precision.


Drive train upgrades
#75026 Front One-Way Differential 36T
Front One-Way Differential for quicker steering and acceleration.

#33406 Diff Gear Set (R40 4 Bevel Gear)
4 bevel gears make the car more stable under hard acceleration. The 4 bevel gear set-up also increases durability.

#33407 Aluminum Hex Hub Clamp Type (6mm/4pcs.)
Precision 6mm aluminum hex hubs machined from aluminum for less hub deflection. Also prevents the drive pin from falling out during car maintenance.


More options
#72170 Threaded Aluminum Shock Set (45-56mm)
Threaded Aluminum Shock Set for extra durability and finer tuning options.

#87241 New R40 Hara Edition Fuel Tank
New optimized fuel tank shape provides a lower center of gravity for improved handling, also includes an overfill fuel channel.

#38202 Aluminum Antenna Holder (Purple Anodized)
Purple anodized aluminum antenna holder for increased durability.



Unassembled 1/10th scale 4WD R40 Hara Edition. Does

[rcracermad]

cool! put some pics on rc universe! my starter box is in the shop after 1 tank in my r40 as the compression is soo tight i stripped the teeth on the belt inside the box!

[Saboteur]

Yeah I made a post there, but didn't get a chance to upload the pics. I'll post it there. As for your box I told Squeedily you may have been hitting the flywheel or bumping it incorrectly. A 750 motor won't have more of an advantage to a dual motor box. It has RPMs, but you need torque. Two 550 motors are the same as a 750.

[rcracermad]

think ive just got 1 550 motor! its the thunder tiger starter box! btw i am hitting the flywheel lol and i should get it bac tomorrow from the shop! :D

[Saboteur]

No box out there has a single 550 motor LOL. If it does the other one is busted or the box is missing a motor. The Ofna one for 69.99 works really great. It has a nice blue bottom and silver top.

[nitrolight]

How does 3Racing & GPM compare in quality?
Is there any other companies that make carbon fiber parts for the R40?
Is rcMart the best place to get after market R40 parts ?
Thanks for any help...

[Saboteur]

Hey man welcome to the forums. :)

GPM products is rather expensive and the LW chassis is heavier than the HPI LW chassis. I'd get the LW chassis from RC boyz. http://www.carttonic.com/catalog/index.php?file=catalog&action=catalog_productinfo&uid=466&pi_id=134663&clist=0,11321,11322,13342

3racing parts looks promising. I recall some people getting things from there and integy.

[KronicRacer]

dont trust gpm. they do not use quality materials

3 racing is top notch stuff.

sab how are your integy part holding up?

[KronicRacer]

How does 3Racing & GPM compare in quality?
Is there any other companies that make carbon fiber parts for the R40?
Is rcMart the best place to get after market R40 parts ?
Thanks for any help...

there are 3 more places that you can shop from

rcmodel
http://shopping.rcmodel.com.hk/

and the border
http://www.the-border.nl/home.php

and integy
http://integy.automated-shops.com/

[nitrolight]

I'm glad you said that... I just ordered 7 items from 3-Racing and 1 from
GPM...

[Saboteur]

I never got them, but from the few who use them, they say parts are pretty good. I personally would rather the silver look rather than purple stuff. Ah well. :)

[nitrolight]

I couldn't agree with you more... Purple aluminum looks like crap... I end up
soaking all my purple parts in cheap industrial drain cleaner and I end up with
silver...

[Saboteur]

Sweet. Here is my new radio I added to my RC collection and man is it great. It just made all my servos a little bit faster. :) The R40 will still visit some tracks until we get full snow.

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3015.jpg

[Saboteur]

Hitec servos have now returned! THnx a bunch Hitec! :D

[EddieR22]

would someone mind telling exactly what parts I need in order to use the new hara chassis... I have an r40 but would like to upgrade it, Just looking for what I need in order to use the new chassis... thanks in advance...

[Saboteur]

Forget about buying the Hara parts. They are so expensive you might as well get an 8th onroad. At the moment you can add these parts to your R40:

LW .8 module 2speed
LW 2speedshaft
LW middle shaft
LW chassis
CF shock towers


All these are a start and will make a big difference.

[EddieR22]

all that sounds good to me.. but are there anyother lw chassis you would recommend besides the hpi one, for a lower price, or is the hpi chassis the best bet?

Eddie

[ritchies rc10gt]

all that sounds good to me.. but are there anyother lw chassis you would recommend besides the hpi one, for a lower price, or is the hpi chassis the best bet?

Eddie


check these out.i have them both.im running the 4MM one now and have the 3MM for a backup.ive bent 3 HPI chassis' already.i actually bought the 3mm one then i saw the 4MM and bought that one also.verynice chassis everything fit on it perfectly.

http://cgi.ebay.com/HPI-R40-aluminum-7075-3mm-Racing-chassis-sage-racing_W0QQitemZ6019453169QQcategoryZ34063QQrdZ1QQ cmdZViewItem


http://cgi.ebay.com/HPI-R40-aluminum-7075-4mm-Racing-chassis-sage-racing_W0QQitemZ6019168369QQcategoryZ44015QQrdZ1QQ cmdZViewItem

[EddieR22]

does anyone have a part number or link to wear I can find the mugen gunmetel shocks that everyone is running on their r40s?? thanks

Eddie

[Josh_C]

Need some advice on whether to have a Novarossi NS12 S3, NSR12S3, RR12LL3 or an OS 12TZ(P) in this car

[EddieR22]

does anyone have a part number or link to wear I can find the mugen gunmetel shocks that everyone is running on their r40s?? thanks

Eddie

can anyone help me with this???

[Saboteur]

You can try mugen's site, tower hobbies, or ebay. Some sites really don't show them.

Josh-I'd shoot for the RR12LL3 or N12LL3. Those are really great and are bout part with the JPs and RB Rody Roar. It all depends on your track, but always remember, with nitro sedan if you got no traction you're going no where fast. The TZ is great for short to medium tracks while the Novas are great all around.

[Josh_C]

thinking about the N12LS3. The shorter stroke would suit the tracks around me which need more top end.

[Saboteur]

Don't forget you can adjust gear ratio for top end speed and also the proper pipe for low, mid, or top end. Overall yes the N12 is great.

[Josh_C]

I don't know whther to go for the mircocast engines or cnc machined?

[Dubbed_Monk]

Drove a friends mrx3 right before it snowed at floyd bennot and I think I'm a little hooked.. want to get one now...... hmm that would be nice a r40 and a mrx4.
or maybe sell the r40 for a new mrx4.....

Do anyone know where I should look for a mint mrx4.....

[Saboteur]

Just remember 8th can be expensive, but nitro onroad is expensive period and some cases can be as much an 8th onroad. You can search for an MRX4, but you wont find one in mint...well there is mine, but it's NFS right now. :) Otherwise it's $650.

[Dubbed_Monk]

Just remember 8th can be expensive, but nitro onroad is expensive period and some cases can be as much an 8th onroad. You can search for an MRX4, but you wont find one in mint...well there is mine, but it's NFS right now. :) Otherwise it's $650.



yeah, I was thinking of gettong some hop-ups for my r40, then started thinking maybe I can get another car for a little more...... lol
Why are u thinking of selling your mrx4?
just wondering what the mrx4 would come with if you did decide to sell it?
you can and pm me if you don't want to post the reasons....
Thanks

[1 savage]

Hey guys, what's the average top speed of a r40?

[Saboteur]

Hey guys, what's the average top speed of a r40?

All goes according to gearing, traction, wind speed, aerodynamics, engine, pipe, how the engine is tuned, etc. There's so many variables. :)

Josh- If I recall correctly microcasted is stronger yet lighter than the regular stuff.

Dubbed- Sry NFS. I thought about it the past but I'd rather keep it. :) Only reason I'd sell it is to get some $$ to sooner by a spektrum set for my radio, tire truer and Hudy Setupboard. I can always get those stuff at a later date.

[Saboteur]

I got my LW chassis and a digital servo for my 8th onroad. :) OMG what a different b/t the stock and the LW chassis. :D

[Saboteur]

Here's a shot of it.

[Saboteur]

Top shot.

[Saboteur]

Body and radio. Need to get the spektrum for it soon though.

[seabass2500]

I just got my R40 put together and waiting on the O.S. 12TZ to get in on THursday... I hate waiting :)

I've been reading all the comments and suggestions for the R40.

I don't know any of the after market online shops for the R40. If anyone could post links for them I would appreciate it. Thanks!

PS: Anyone know why Kyosho went all direct sales??? What a pain!

[Saboteur]

www.rcmart.com
www.rcboyz.com
www.3racing.com
www.integy.com

Those sites all have great RC parts and upgrades. Do get the HPI LW chassis. It's lighter than all the other aftermarket chassis.

[seabass2500]

Thanks for the links!

I am also looking for a good pipe... Looking at RD Logics Turbo II pipe on ebay now for $60... any thoughts?

[kawasakirider]

What's the top speed of the stocker ?

[Saboteur]

Kawasaki-The R40 doesn't come with an engine. It depends on what you put into it. The car can take SE engines, but you need that RB or Serpent side exhaust header. Yokomo SE header works great too. No reason to get an SE engine anyway..slap on a nice .12RE and you're set for racing.

Seabass-RD logics is great, but I'd go with pipe best suited for the engine you go with. An RD logics will be good for my RB, but from what I've seen the RB pipe works better for it.

[srtbass]

man that rcmart has alot of cf parts for the r40

[srtbass]

hey Saboteur is it good for my car to reach 300 degrees? how many turns is yours turned out?

[srtbass]

hey is the proceed a better set up than the r4o?

[Saboteur]

Tune your engine for performance. Most Novarossi's don't run that hot especially in hot weather. Check the needle settings. My RB is different than the engine you have which I believe is an older RS12. Not every engine has the same needle settings for optimum performance or break in. The proceed is an 8th onroad which is a different class.

[srtbass]

going to start the r40 productions which are installing videos for the parts on the r40 ;) :p :D :confused: :o :eek: :( :mad: :rolleyes: :) :rolleyes: :) :cool:

[Saboteur]

Good luck on building. The car is pretty easy to work on. :)

[Saboteur]

Just thought I'd bump this thread up a bit. I'm running a oneway diff now and 30% for my nitro. Mugen shocks and spare springs will soon follow for the car. :) I'll post pics later on.

[KronicRacer]

mugen shocks huh? interesting.... i want to run serpent shocks. hows the LWchassis working out?

[Saboteur]

The difference between the stock and LW chassis is VERY noticable; it feels like NOTHING! It also stiffens the car a little bit. Some say the alum brace makes the car too stiff, but they do use the graphite side engine mount. My friend has mugen shocks on his R40 and they work pretty well. For the same price as the HPI's or a buck less they are stronger.

[KronicRacer]

its a bad ass chassis for sure. im have the side brace in cf and the lw chassis so fas so good heres an update on mine
http://img.photobucket.com/albums/v396/kronicracer/a3e4b1b0.jpg

http://img.photobucket.com/albums/v396/kronicracer/181f174c.jpg

[Casper-DK]

Hey guys, i am new to this forum, so HEY :D , but i have some questions, i have been into R/C for about 2 years, i have been driving a HPI Super nitro, with a Rossi R12 Pixxy engine, 2-speed super chasis. etc., But now i would like to get a more "race sort-of " car, and i realy like HPI :o , so, how would it be, if i bought a HPI R40 as my first Semi-Race car?

But i Live ind Denmark were the distributor of HPI just closed, so now there are mainly Mugen, an serpent cars, would these be better than the HPI R40 for a beginner?

Thx. Casper

[apollo]

i dont own an R40, but i will go ahead and say an R40 isnt a car for a beginner, its mostly a full race or extreme bashing racing car, 2 quick nitro on road cars that hpi has are the rs4 evo, and the rs4 18ss, i would see what kinda parts you can get in Denmark because it might not be worth the wait if you ahve to wait 3 weeks for something like a tire or a tie rod, i hope this helps

[Saboteur]

Hey guys, i am new to this forum, so HEY :D , but i have some questions, i have been into R/C for about 2 years, i have been driving a HPI Super nitro, with a Rossi R12 Pixxy engine, 2-speed super chasis. etc., But now i would like to get a more "race sort-of " car, and i realy like HPI :o , so, how would it be, if i bought a HPI R40 as my first Semi-Race car?

But i Live ind Denmark were the distributor of HPI just closed, so now there are mainly Mugen, an serpent cars, would these be better than the HPI R40 for a beginner?

Thx. Casper

The R40 is a great car box stock but isn't a basher. It's better suited for the track. The '05 Hara R40 edition would be great competition for the Mugen and Serpent. If those are the only two cars you have to choose from go for it then. Nothing is worse than ordering parts often. The standard R40 kit is great for beginners and upcoming racers alike. Mugen and Serpent are also great kits as well, though it just depends on your skill of building. If you do race, a setup guage is good to have as well as the board.

Kronic- Nice ride man. :) What fuel are ya running? I'm using byrons 30% w/ 11%oil

[Casper-DK]

Hey saboteur, thanks for the answer :) . I do race, and i'm not a complete noob of building cars, i have the super nitro, and the savage ss kit, wich didn't bring me to much trouble. About the HPI distributor, it's not totaly impossible to get spare-parts or, hop-ups, for HPI cars. And there are some talking about Some of the other local hobby stores, are going to distribute HPI again. So i do race, but i'm just a beginner, and i'm probably not going to race in the Danish Championship. But the Races in the Club. for a start :)

Sorry if i sound to noobish. :o

Casper

[KronicRacer]

well sab is right and i have to say go with what you can find locally for the emergency repairs. it sucks to wait for teh online orders and shipping builds up over time.

sab - i'm running 30% blue thunder.

[Saboteur]

Kronic-Kewl beans. Byrons 30% costs $4 cheaper that Odonnels 20% fuel...how odd? :) Either way I certainly been wrong for racing with 20% although I'd quite well.

[Saboteur]

I'll probably be practicing with the MT12 and or Rody V12 at bridge when its warm again. Feel the need to keep a backup Motor so I'd probably get the RB X12 for the GT later on. The RB pipe is on order and should be in next wednesday. I hope the MT12 likes it :).

[Casper-DK]

OKay sounds great, thanks for the answers :)

[Saboteur]

GT sold, Rody staying, MT12 is practice motor. :)

[Fluke]

one quick question.would this header work with th os 18cv-r engine in the car?

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXAMZ6

and btw what pipe would you suggest?

[Saboteur]

You will need the yokomo GT4 header to make the .18cvr work. That one and the RB are similiar. Serpent makes one, but it's not that durable. As for pipe, RD logics and skyline(great pipe) are great for the money. Skyline has has a lot of titles under its belt.

[Saboteur]

I bought the 4gear bevel conversion and alum shocks for my R40. I'll post pics later on. :)

[nitrolight]

I posted this question on another forum with no response... anyone ?

The other day while driving on the track every once in a while my car would rev really high and it would go nowhere... my finger was off the trigger... then the engine would wind down and it seemed the clutch would then engage... and I could continue driving like normal... I went home and decided to open the clutch up and take a look... there was no circular clutch spring, I thought it might have shot across the room and I didn't notice, very strange... I fixed it and yesterday I went to the track, and this problem started to happen right away, in fact I couldn't get a lap around without having the same problem... I opened the clutch up at the track and the spring was gone... ***... Am I going crazy ? I just reordered a new spring, so I'm waiting on that to come in, but what is happening to me ? Anybody have a clue ?
Thanks

[Saboteur]

That little spring just holds the clutch weights. The clutch spring is the thick round one that slides onto the shaft. The round rubber like disk is the clutch shoe. The Mugen centax doesn't use that spring. Check how far down you have the adjuster nut. To tight and it will rev a lot before going anywhere. Too loose and it will be the same. I personally switched the ofna cd3 pro centax onto my car and others use the mugen centax. BOth work a lot better than the stock centax.

[nitrolight]

That little spring just holds the clutch weights. The clutch spring is the thick round one that slides onto the shaft. The round rubber like disk is the clutch shoe. The Mugen centax doesn't use that spring. Check how far down you have the adjuster nut. To tight and it will rev a lot before going anywhere. Too loose and it will be the same. I personally switched the ofna cd3 pro centax onto my car and others use the mugen centax. BOth work a lot better than the stock centax.

Actually the dark adjustment spring was very loose, that could be what was causing the very high revving...

[Saboteur]

Yep definately that could be it. Adjust the adjuster nut (cap on the spring) so you can see about a thread or two of the SG clutch nut. Try it out. I'd opt for the mugen silver spring as it's harder and will allow you to make less clutch adjustment and see better results.

[Saboteur]

Here it is :)

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3214.jpg
http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3218.jpg
http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3217.jpg
http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3216.jpg
http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3215.jpg

[apollo]

sab, i love the shocks, how much are they for 4? looks sweet

[Saboteur]

My LHS has em $31 a pair. As u can see you get a lot in the bag for tuning. The mugen you don't.

[RS4-R40]

Hey guys I'm new to Radio Control Car Action forums but have been reading the magazine for years. As my sn indicates I started out with the first HPI RS4 then moved up to the R40. The R40 is great and I love the ease of working on it, I drive it in a large parking lot that is level and smooth but has some bumps (very good lot compared to others). I know the R40 was designed with track racing in mind but I only drive it in this parking lot.

The car handles well, but I would like to adjust the setup because I know it can be greatly improved. I was wondering if anyone knows out of experience or from reference a great parking lot setup for the R40. Basically the settings for ride height, camber, toe, what kind of springs to get and front stabilizer settings.

I have all stock parts except a front one-way diff and a O.S. 12TR(P)-T engine with an HPI tuned exhaust.

[Saboteur]

Personally, the only I have is for a track. Bashing wise, I just run it stock with a 5-6mm ride height, -1.5mm toe in rear, 0-0.5 toe out front, no camber front or rear. Stock springs work very well. Use 6mm preload front and 3mm preload rear, which the shocks in the stock position. Remember oneways will disengage when braking. It's common for it to spin out.

[RS4-R40]

ok thanks alot, do you use stock front stablizer settings?

[Saboteur]

The only upgrades I have are:

LW shafts (2speed and middle)
LW .8 module two speed
Graphite front/rear shock towers
HPI LW chassis (GET THE HPI ONE...the other chasssis are heavier)
Aluminum shocks (stronger than stock obviously)
oneway diff
4 bevel gear diff mod ($9 makes rear diff into a 4..stable acceleration)

[nitrohead5300]

Saboteur, I finally got that OS TZ .18 motor broke in, in my R-40. She is a missle and she handles what I did was, 4 bevel gear rear diff mod, put 35 mm wide CRC tires on the rear and removed the rear swaybar. With this setup you get all the traction you need. I estimate that I am hitting 65-70 I am gonna put my speedo on it so I can get a reading. So if any of you other guys out there want to outlaw your R-40 for some highspeed parking lot racing don't be afraid to drop a OS TZ.18 in her with a little tinkering you can get her to hook up. :D CRC website is http://www.teamcrc.com

[Saboteur]

I kept my rear swaybar in and it was pretty great regardless for handling. That TZ is a great engine if you wanna bash with for sure :D. I no longer have my R40 and just run 8th, but I help a friend out at the track who runs an upgraded r40 with nova ls3 and vantage pipe. That's a great combo for nitro onroad and boy does that engine scream. I'd like it if HPI made an even lower gear ratio on the .8 2speed, but they probably figured with it being lighter it will spool up faster anyway.

[nitrohead5300]

Oh, you went 1/8 scale I have been thinking about that too. Good luck racing !!

[Saboteur]

Oh no I had the R40 and MRX4 together, but at the time I've been spending more $$ into the R40. Also, I didn't want to start the race season with half ancient and partially new parts. Therefore I just sold the car. I may get into nitro onroad again, but will go with Mugen since my lhs is slouching on HPI parts.

[decals305]

just started building R40 last night.... my first NEW car in 3yrs. Are there any problem areas to look for? Thanks

[triton_marty]

Hey Everyone; I recently upgraded my shocks to the HPI competition threaded set with a 70wt oil and leaving the stock springs. However, after installing the set, my R40 has a much lower ground clearance. I fixed this (sort of, ground clearance is still lower than with stock shocks) by tightening the springs, but now, the entire shock body (#75196) is visible. Is this how these shocks are supposed to be on the R40? Does anyone recommend any other springs/accessories?

The shocks I got: http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXLMD7&P=7

Many thanks.
-Martin

[Saboteur]

*edit* BAH, I just tried typing a whole big post and IE freezes up :rolleyes: Anyway..

Decals - No real issue with the car honestly, except maybe HPI could include tougher front cvas. One person said it may have to due with a tight servo saver so check on that.

Martin- I've had the same shocks too, but swapped the fronts for a stiffer spring as those blue springs are really soft. Unfortunately since front droop has evolved and now goes in horizontally, raising the droop to the point where it rubs on the block will raise the car and offer no suspension action.Usually no droop or atleast 1mm is fine. Refer to this chart for springs as it shows you rate, length, and what fits what car. :)

http://www.hpiracing.com/graphics/instr/I-6751-2-V9-Color.jpg

[Dubbed_Monk]

Hey Saboteur,
How much did u sell your r40 for......
Since i bought mine the end of last yr, I've ran my car 5times.....
So I'm thinking of just getting rid of it, since it just sits there...... plus i'm looking into getting a mrx4.
Just want to see if it's worth selling or just let it sit and collect dust....lol
Thanks

[Saboteur]

With the few upgrades, few spares n tires I sold it for $160. Resell value on them is a bit low. Also there are more upgraded versionsof the R40 lingering around so unless you have say a 2004 hara kit maybe u can get $250 for it with Ti screws. What do you have with your car? I can better help you for a price to sell it at. Check ebay for great deals on 8ths.

[triton_marty]

Thanks Saboteur for the spring chart link. I was actually using the stock black springs from the original kit, and not the blue ones that come with the sport shock set. I believe HPI has three different shock sets; stock Hara edition uses "THREADED ALUMINUM SHOCK SET" while their top line is "Competition Aluminum Threaded Shock Set". The later don't come with any springs. Looking at Hara's setup, I think that I can find the appropriate springs--he's got some red one's in the rear... Thanks again.

[DanielNAraujo]

What option parts is everyone running on their R40's?
Pictures? :)

[Saboteur]

Hey welcome to the forums. I sold mine, but check around page 36 or so for pics. I ran

CF front/rear shock towers
HPI LW chassis
.8 module two speed
steering upgrade (purchased bearings seperately...cheaper)
LW shafts (twospeed and front)
Oneway diff

[DanielNAraujo]

What is the best engine that works on a R40? Price is not a huge deal for quality. Thanks

[Saboteur]

Depends what you want it for...racing or bashing. The R40 accepts .12 or .15 small block rear exhaust engines, std crank or SG. Slide carbs only.

[Saboteur]

Just wanted to announce it's possible I'll be returning to the R40 for the moment. This is only possible via trade. I'll be using it to coach my friend running nitro onroad. Soon enough will it sport a new pipe and new motor. :)

[Saboteur]

Here it is. :)

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3404.jpg

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3410.jpg

[Saboteur]

Some other shots

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3412.jpg

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3431.jpg

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3426.jpg

[splater_godd]

I recently bought an R40 and am looking to buy a header and pipe for it.
The engine I will be running is the O.S. .18TZ (P) EB Mod.
If anyone has the same setup or just has an idea for what to use I would greatly
appreciate it. Thanks.

[dilpickle]

Any one interested in a R40 roller, light weight upper deck and two speed shaft along with stock parts and a few spares-about half a gallon through it. No where to run onroad around here anymore. PM if interested.

[nitrohead5300]

Splater Godd I have a R-40 with a TZ -18 in it, it is wicked fast!! Make sure the surface you run on has alot of bite or else you will spin out all over the place. I also put some 35mm extra wide rear tires on the back to booster traction. :D

[splater_godd]

nitrohead5300, what type of pipe do you run on your 18 TZ and where do you get 35mm tires? thanks.

[nitrohead5300]

Splater , I am currently using a extra Fusion .21 pipe on my TZ .18. But since your motor has been modified you might want to use this pipe instead Cvec Torque pipe style no. rc185t , tower hobbies has them and they are especially made for 15-18 size motors. Calandra Racing on the tires.

[tonyt]

HEY!!!

How does the R40 compair to the RS4 3 18ss???

Compair and contrast??

Tony T.

[apollo]

R40: belt driven high performance high precision touring car meant to be raced in top level competitions on a well groomed track, can also be bashed but i wouldnt do it

RS4 18SS: shaft driven tough basher that is durable but nto so much race worthy, bigger engine than an R40 should really have, if you want bashing durability, go with the RS4, if you want to truly race, get the R40

[tonyt]

R40: belt driven high performance high precision touring car meant to be raced in top level competitions on a well groomed track, can also be bashed but i wouldnt do it

RS4 18SS: shaft driven tough basher that is durable but nto so much race worthy, bigger engine than an R40 should really have, if you want bashing durability, go with the RS4, if you want to truly race, get the R40

thanks....sounds like the RS4 is the way to go (no racetracks around here and the streets look like swiss cheese compaired to a racetrack)

Tony T.

[Saboteur]

I would agree. No real point of owning an R40 if you're just going to bash.

[m_thoroughbred]

does the tz .18 os fit the r40 without any modz or special motor mounts? cause i currently have the r40 with a nova .12 and i wuld like to know so i can upgrade the motor

[nitrohead5300]

It should just drop right in.

[Saboteur]

Yes it will fit, but gear it with a tall ratio. The LW gear ratio would be best...even better than the stock otherwise the shorter ratio will have you spinning out all over the place.

[nitrohead5300]

You also might want to try some CRC extra wide foam tires for the rear. Their Track Magnets are 35mm wide that should give you some extra grip.

[Saboteur]

Well my R40 didn't sell and the person I was going to give it away too lost interest as he is more into bikes and such. Anyway, had to visit an old friend of mine (LHS) and ended up with....

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3584.jpg

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3585.jpg

http://i19.photobucket.com/albums/b179/VTECHSaboteur/DSCN3586.jpg

It's kinda hard to part with this car after some good (and bad) times with it. Atleast the LHS nearby still holds onto parts as I don't have the time to drop $400 on an MTX4...and not even have parts. The carlsen Mod OS TZ will be installed after I warm up again with the .12TR. Hopefully we get one last nice day before the snow/brick cold hits.

[bxpitbull44]

Why is that? One thing I have read about this car as well as many others that they must be run on well paved tracks? At these costs, why cant they be run on regular parking lot tracks? Not parking lots that look like minefields, but smooth enuf not to wreck the car.....

[Saboteur]

In general you want to run any onroad car on a smooth surface. It can have some cracks or so, but not big pot holes and tons of gravel laying about. If it were a rally car then it'd be fine. You don't really have to drive the R40 on a paved track as I took it anywhere unless it were dirty.

[zafiris_r40]

hello guyzzzz.i'm from greece and i have just bought a used hpi r40.it has SIRIO 12 engine and exhaust system.i drove it twice in a parking place and i felt that the car is too difficult and too fast to control it.i have a stick radio control.i forgot to say that this is my first rc car!!!
that you advice me to do.
THANX A LOT!!!

[Saboteur]

Hi Zafiris. Welcome to the forums and happy new years. I wouldn't recommend to ANY beginner to drive a powerful motor in a nitro sedan. Being that this is your first post I doubt anyone here told you to do so. The most you can do is adjust the throttle trim to reduce overall travel to get use to the speed. As you learn to drive the car you can open it up a bit.

[zafiris_r40]

happy new year!!! thanx a lot for the welcoming..you have right.it's too fast for me.i ca'nt control it.also it has foam tires and on dusty road it slips :eek: .i'll try to reduce the throttle.

[Saboteur]

Same to you man. Definately try driving on a smoother cleaner surface. That will help with traction issues. ;)

[zafiris_r40]

in my city there is only one rc car ring!!!!it is in avery bad condition and i preffer to run my r40 in parking places!!!
take a look of the ring...
http://www.irmscher.gr/rc/trackpics.htm

[tonyt]

mmmkk......

Step 1: Loot the truck. :D

Step 2: clean the place up

Step 3: re-pave if needed

Step 4: practice, patience, persistance.

Step 5: get a spektrum, you won't regret it.

Step 6: OWN your friends

Tony T.

[Saboteur]

I agree. A lil TLC for the track and it'd be great! The layout looks awesome, but along with a newly repaved surface it'd be sweet.

[zafiris_r40]

where i can find infos and photos for hpi r40??i want to take ideas about what i can do on my r40.Thank you!!
i'd like to suggest me sites, etc.

[Saboteur]

Browse through this thread few pages back as there are lots of tips and pics.

[fastharry]

where i can find infos and photos for hpi r40??i want to take ideas about what i can do on my r40.Thank you!!
i'd like to suggest me sites, etc.

http://img.photobucket.com/albums/v209/fastharry/Picture131.jpg
http://img.photobucket.com/albums/v209/fastharry/Picture136.jpg

[fastharry]

where i can find infos and photos for hpi r40??i want to take ideas about what i can do on my r40.Thank you!!
i'd like to suggest me sites, etc.


here ya go....from fastharry....hpi challenge winner,no less ;) :wave:

http://img.photobucket.com/albums/v209/fastharry/save18.jpg

[zafiris_r40]

here is mine.... :flame:
http://img111.imageshack.us/img111/3417/dsc00174bf3.jpg (http://imageshack.us)
http://img406.imageshack.us/img406/8517/dsc00181dp8.jpg (http://imageshack.us)
http://img403.imageshack.us/img403/8530/dsc00182wy7.jpg (http://imageshack.us)
http://img62.imageshack.us/img62/2415/dsc00183gf8.jpg (http://imageshack.us)
http://img207.imageshack.us/img207/2016/dsc00184hf4.jpg (http://imageshack.us)

i bought it used and i have lot of things to do.
first of all i have to clean it :o !!!

[Saboteur]

How much did you pay for it used? Hopefully you didn't get ripped off because it looks beat up.

[zafiris_r40]

here in greece the price to buy it new is 400E + 250+E(Engine) = 650+E.
I bought it with engine 150E.I biyght extra the radiocontrol (65E)...

[zafiris_r40]

hello again.after few days i made a lot about the car....i bought a new gas filter, reiceiver pack(because the previous owner didn't have it), rear 30mm tyres 37(type d) GRP.

[Saboteur]

New Gas filter? You mean fuel filter right? Post some new photos of your ride when you're done. Mine is gonna be fully set once I get the Hudy system.

[zafiris_r40]

besause is exams period for my university, i don't have time to take photos.it's dusty and i have to clean it.when i do this i 'll send a couple of photos. :roll2:

[fastharry]

Hi guys...I just posted some neat r40 stuff on ebay...spares that I have...look for r40..and my tag is therealfastharry ..thanks

[cronz]

anyone know of a good place to get Pre-Painted bodies for the R40

[fastharry]

guys....I have the perfect engine for the r40 up on ebay now....a nova rossi NSR s5( 5 port turbo).......starting at 129.......NEW IN BOX///

[X32garrick]

Hello from the Philippines! I see the last post was 3 years ago. Hope this thread comes alive again :) These are pics of my R40 and his 2 bodies.

http://i262.photobucket.com/albums/ii101/X32garrick/RC/P2093701.jpg

http://i262.photobucket.com/albums/ii101/X32garrick/RC/P2093740.jpg

http://i262.photobucket.com/albums/ii101/X32garrick/RC/IMG_4071.jpg