just go straight
 

hello all...I'm having trouble getting my controllers to center...mechanically they are perfect and sometimes it will go straight...the servo is not the most expensive...but its the servo that i like... it's good enough for me cuz i have to keep the dual rate dialed back cuz its twitchy... and throttle control is perfect..any thing i can do to fix this?

oh yeah...it goes perfectly straight on gravel

It is not totally clear what the problem is. Does the servo arm not return to the centre point or is there slop in the steering mechanism that is not accurate enough to return to the centre point?

If it is the servo not returning to centre then that is probably where the problem lies, the issue is not uncommon on cheap servo's.

Have you tried a different servo?

Make sure there is some toe out in the front wheels. That will take a lot of the twitch out, and make centering and going straight easier.

I'd recommend toe-in instead of toe-out in this case, as it won't be as twitchy off center and should track straighter. Steering linkage needs to be checked at all pivot points for binding and/or sloppy ball cups. Last thing to check would be the servo saver, as they do wear out with use. Larger, heavier tires wear out the servo saver spring a lot faster than smaller tires do due to the forces applies whenever the tire hits bumps while turning, and warrants a more frequent replacement of that part.

Toe in will make the car extremely twitchy and sensitive near center.

all the links are brand new there is no slop anywhere...the servo is a futaba...I've tried a tactic servo and it does the same thing...only difference is i got to crank up the dual rate cuz its slow

if anything I'll take away a little camber...its a slash 2wd...doing so will change toe and camber

Make sure the camber & caster are the same on both sides & - steering exponential will help wit the twitchiness (if you have it) & you will still have max steering when you need it

Try toe-out, make sure your servo saver is in good working order with no slop, check if your drivetrain might be binding on one side.

Chances are, its your servo saver. Try some Kimbrough's. They come with different spline adapters for easy install.

http://kimbroughracingproducts.com/s...ategory_id=176

Oh yeah i just remembered i want to see how it works without the servo saver....

I have insomnia i never sleep...i think i slept 2 hours yesterday.....guess I'll break out the calipers and get to work

Yes i drive well enough to not use a servo saver....if i do this though i think i might have to use the slower servo....

I do have a brand new servo saver in it though
Here is a list of things i have replaced;
Servo
Servo saver
Toe links
Camber links fr & rr
Bulkhead
Shock tower with custom brace
Transmission case
Rebuilt the shocks and balanced them
Rear shock tower
Pretty much everything that moves

Caster blocks
Steering knuckles
Rear axle housing
All Hinge pins
And fr&rr a-arms

That was easy...now the wait till daylight...or if i think of something else to do

Party in the lab tonight.. the futaba is fast and all.. but the tactic has metal gears..
frac-ing.....why don't they just makem one size fits all...maybe I'll just measure to a 1/10th of a mm instead of a 1/100...
nah....that sounds boring

well i guess I'll waterproof them both since i got em out....

Here's a tip...let the liquid gasket stiffen a little then take your little screwdriver and press it into the screw..that way it stays sealed and it wont be gunked up with sealent..


Man its taking this stuff forever to dry...

Is your car tracking straight now? Did you check the condition of your ball bearings?

That was one of the issues I had when I bought a used chassis. Ended up replacing all the bearings. :lol: