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Old 04-28-2005, 01:18 PM   #6256
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Default Re: R40 - weakness

I agree when I hit the walls slightly the piviot ball came out. And it eventually made the holder crack.


Quote:
Originally posted by JAG Racing
After racing the R40 for the second year I have come to the conclusion that its weakest point is popping sterring knuckles off of the pivot balls. It doesnt take a big hit off of the wall to accomplish this either. And if you change over to the aluminum steerings knuckles, you will then break pivot balls.

Other than that the car is very reliable. Now, if you are an excellent driver that never "tags" walls, then maybe you are not too concerned. Even if you are a skilled driver, it is likely that someone else bumps you up against a wall so there is benefit for you as well.

The fix could be slightly stronger steering blocks make from some stronger somposite material but this would be expensive. An alternate would be to use a wider bumper that extends out the the tire so that less tire is exposed during a glance off of the walls. I am working on a new design and I hope to have some new bumpers that are made from stronger foam and are wider.

I bring this up because I see many other cars, MTX-3, Kyosho RRR, Sepents, that seem to be a little "tougher" when they glance off of the walls. I use the term glance becuase I am not talking about a direct hit, only a glance at about a 15 - 25 degree angle of attack on the walls.

Do any of you guys know of any other "reliability" issues?
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Old 04-28-2005, 01:23 PM   #6257
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Default R40 Weakness

I try not to hit anything, but I did flip over few times. My friend wreched the R40 by hitting a car at 40mph, but the damage wasn't severe. Infact the chassis is fine.

Klander- Can you point me to the exact page for the R40 parts? I can't find em.
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Old 04-28-2005, 01:32 PM   #6258
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I'm not Klander but here is the page......

edit: this url is better than the last I posted.. this one takes you right to gpm parts for the r40

http://www.rcmart.com/catalog/defaul...95_426_490_510

Last edited by onnetz; 04-28-2005 at 01:39 PM.
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Old 04-28-2005, 02:38 PM   #6259
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Quote:
Originally posted by KLANDERMAN
MRD: Aluminum is heavier and you want to be lighter... It's more durable, but heavier. I use 3 racing aluminum pulleys, but just for bashing around, not for competition.

I use GPM titanium 2 speed shaft and front shaft, so far they've worked great...

When it comes to lightparts 3 racing is a good choice , I use al the graphite parts you can think of.

Get the rear/ front shock towers
side belt tensioner
steeering brace
lower suspencion brace
battery protector
titanium shafts
lw 2 speed tranny

good luck!!!
Has anyone seen the GRAPHITE SUSPENSION ARMS YET?!?!
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Old 04-28-2005, 02:46 PM   #6260
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Quote:
Originally posted by Artificial-I
Has anyone seen the GRAPHITE SUSPENSION ARMS YET?!?!
these?

http://www.rcmart.com/catalog/produc...oducts_id=8755
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Old 04-28-2005, 03:02 PM   #6261
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HARK- Here is the like from rcmart as where you can choose which brand to buy from.
3 racing
kawahara
GPM
HPI
JET

http://www.rcmart.com/catalog/defaul...th=595_426_490

Happy hunting!!!
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Old 04-28-2005, 03:26 PM   #6262
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This is what I have ordered from rcmart

From 3racing I have the:

Graphite Front/rear shock towers
Graphite side belt brace
Graphite lower suspension mounts
( not installed yet)
Aluminum Front One Way Tube For R40
aluminum One Way Pulley 36T For R40
Aluminum Pulley 18T For R40
Aluminum Pulley 19T For R40
Aluminum Pulley 23T For R40
Aluminum Brake Stopper Pulley 19T For R40

from GPM:

Titanium shafts
Titanium brake disk
Graphite brake pad holder
Graphite steering plate

Waiting on:

3 racing engine mounts
Graphite Front Bumper Plate For R40
Graphite Receiver Battery Plate For R40
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Old 04-28-2005, 03:36 PM   #6263
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WOW!!!! Well im getting rid of one r40 and getting another. I'm trading my r40 for a nice ntc3. And trading my impulse pro for a r40.

AI can you post in more detail what you did to get rid of the sloopy steering?
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Old 04-28-2005, 05:34 PM   #6264
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Quote:
Originally posted by nsxshogun
WOW!!!! Well im getting rid of one r40 and getting another. I'm trading my r40 for a nice ntc3. And trading my impulse pro for a r40.

AI can you post in more detail what you did to get rid of the sloopy steering?
NICE! just wanna start all over with the knowledge you got to put the new R-40 in a better perspective from the start...
Later on I might just order another R-40 kit just to put it together and start fresh, but that's gonna be until christmas or something. I might just keep the extras and sell the old one stock with the wasp engine or something...
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Old 04-28-2005, 05:49 PM   #6265
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Quote:
Originally posted by onnetz
these?

http://www.rcmart.com/catalog/produc...oducts_id=8755
Yup those are them. Has anyone tried them. Im ordering a set right now.
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Old 04-28-2005, 05:54 PM   #6266
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Default gearing

what kind of gearing is everyone using?

from what I can tell, the stock gearing is pretty tall...
most places to run around here are about 60-80ft x 60-80ft and it just isnt enough room..
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Old 04-28-2005, 05:55 PM   #6267
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Quote:
Originally posted by nsxshogun
WOW!!!! Well im getting rid of one r40 and getting another. I'm trading my r40 for a nice ntc3. And trading my impulse pro for a r40.

AI can you post in more detail what you did to get rid of the sloopy steering?
This was for my older racer2 / rs4-2 car. But I will be checking out the R40. It looks like it could loose some.
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Old 04-28-2005, 05:57 PM   #6268
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yep! pretty much the stock config 54T/60T spurs and 22T/ 29T pinions, although I will be trying the 28T this sunday to see if I get the engine to it's peak performance faster on the straight. A bit more torque... well like 2%.
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Old 04-28-2005, 05:57 PM   #6269
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Also BTW I just got in a ton of tires. Im so happy ill be able to use some different tires for the race on sat. Ive got some rubbers for the racer2 and some foams for the r40. Kinda a harder foam. 45 all around. Ellegi's , the yellow kind.

What do you guys think of those?
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Old 04-28-2005, 06:02 PM   #6270
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MMM well I've never gone so far as to 45s, The stock tires were something like 42 shore front and 40 shore rear or something but I guess they will last a lot longer... I use 35 shore all around, butr they go fast quick specially the front ones when I use the solid axle, but I bought plenty to waste lol... That's probably what I spend more money on, fuel and tire as I practice and bash around every sunday since christmas...
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