diy rc vehicle design - Page 3 - RC Groups
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Feb 03, 2013, 03:52 PM
yes!, ive had my 1/16 turnigy SCT for a few weeks now . i cant quite tell because it so loose, but it seems the bottom of the wheel are angled in?

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Feb 03, 2013, 05:02 PM
Fan of just about anything RC
SoloProFan's Avatar
Camber, caster and more angles explained:
Feb 03, 2013, 06:48 PM
toe in/out is easy, just steering rods.
i have to figure out some way to move the top wishbones L/R (top view) for camber

but im not sure about caster, as the wheel knuckle has only one direction of freedom(yaw) on the caster mount. how would i add adjustable "twist" for caster?

also, that site doesn't give recommended toe-in/out for 4WD, would you know?
Feb 03, 2013, 07:07 PM
although its pretty much nitro biased, here's a good site:
Feb 04, 2013, 01:44 AM
Fan of just about anything RC
SoloProFan's Avatar
Originally Posted by sirbow2

also, that site doesn't give recommended toe-in/out for 4WD, would you know?
Depends on what you want, toe in front helps with stability on the straights, slight toe out front will help with turning on twisting circuits.
Feb 05, 2013, 06:10 PM
another aha moment :P turns out that i wasn't crazy: caster angle cant be changed without getting a new c-block according to
RC Setup Guide; Caster Vid 2 of 21 (6 min 56 sec)

looks like another good series to watch:

ok maybe i was wrong. this image sparked some inspiration:

this ideas with a few modification would make camber a breeze. Still thinking if i was to do caster with it, though.

been playing with adjustable caster. it's pain because im not good at this yet, so ill do camber like the above image and caster through different c-blocks, or maybe angle up the whole front diff/suspension assy
Last edited by sirbow2; Feb 05, 2013 at 10:02 PM.
Feb 06, 2013, 12:55 AM
Fan of just about anything RC
SoloProFan's Avatar
Adjustable caster sounds nice, the main problem will probably be to keep it durable as well.
Feb 06, 2013, 12:55 PM
Registered User
wparsons's Avatar
The easiest way to adjust caster is to just shim the whole front bulkhead to a new angle. It's not adjusting caster in the truest sense, but it has the same effect at the wheels.
Feb 06, 2013, 01:49 PM
ok cool. that's what i meant by "or maybe angle up the whole front diff/suspension assy"
Feb 06, 2013, 02:16 PM
Outdoor Extremist
rustlererad3's Avatar
hmmm you have made great strides here man
Feb 06, 2013, 02:41 PM
hah true! thanks
Feb 06, 2013, 05:31 PM
Outdoor Extremist
rustlererad3's Avatar
anytime so hows the projects coming here
Feb 07, 2013, 12:02 AM

sorry for the slow response.

currently im working on shocks/diff case/ all that stuff around there. and thinking about using the e-revo "flat shock" style. like this:

and it shows how to do caster fairly easier by using the ball cup things grr why didnt i think of that... i think ill stick to the caster blocks that i have for now.

i was trying this for caster:

but i found that to be too much of a pain as the sphere bearings just don't give enough freedom

the shocks i design will probably be similar to the "Traxxas Revo Front or Rear" from here:

and a question: what level of "stretch" should the shocks be when the suspension has no load (like if you were holding the rc in the air by the chassis)? neutral?
Last edited by sirbow2; Feb 07, 2013 at 12:18 AM.
Feb 15, 2013, 05:55 PM
here is the CF 2mm base (thicker?) with A-arms, wheels, castor blocks, etc. ill add some sort of cf bracing later.

the grey 55m^3 boxes are the diffs (empty) and used for a quick mount test. 2x12in total car dimensions.

The 'i' shape is for integrated bumpers. i also plan to add some sort of wheel well.

next up is: dogbones, shock towers, wheel wells and later: the diffs

for some reason i cant get the wheel suspension parts to move in this assembly. anybody with solidworks experience here? i cone move the individual wheel susp parts in that assy, but once i add that assy to this one in the picture, the parts act like the are fixed.
Feb 18, 2013, 12:28 PM
Outdoor Extremist
rustlererad3's Avatar
thats sweet man you have been doing some major work here

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