Originally Posted by oldpugva
Issue now is springs and possible sway bar. I am a little fishy out of the turns and have to be careful with the throttle or I will end up sideways.
Thoughts? Looking to go to SILVER and GREEN for front and rear respectively. I run on asphalt (very smooth and fast).
I would try and stay away from the swaybar if you could. You can end up with a faster car if it is setup without one, but that just depends on whats comfortable for you.
My Tc4 did the same thing. It wants to spin out coming off the corner on power. Heres the changes i made that got rid of most of it for our asphalt...
Front shocks: Red AE spring, #1 piston, 50wt oil, inner hole on arm, #2 hole on tower (counting from the centerline of the car)
Rear shocks: Green AE spring, #1 piston, 40wt oil, outer hole on arm, #3 hole on tower (counting from the centerline of the car)
4 degree caster blocks (tried 6 degree blocks, too much caster)
Are you using any washers under the ballstuds on the steering rack? Im using a silver ballstud (+.030 over a black ballstud) and another .030 washer under each steering rack ballstud.
Which hole are you using on the steering knuckle? If youre using a front diff, use the inside hole on the steering knuckle... and be sure your steering turnbuckles are parallel with the lower control arm at static ride height. This is your bumpsteer adjustment, and varies with the caster blocks you use, suspension shim choice under the suspension mounts, and the number of washers under the steering knuckle ballstud.
If you can, try to crossweight the car on an MIP Tweak Station, or someones balance beam. The shaft cars are really sensitive to crossweight changes, or lack thereof. If your on power oversteer was mostly to the right, and not so much to the left... then this is something you need to look into. If you dont have threaded shock bodies for the fine adjustments, let me know... i have like 6 full sets of them, and youre more than welcome to one.
I also shortened the front camber link one hole, but we use grape soda on our track. That difference, and the X pattern tires you use for RCGT may not require that change. Also, make sure you are building your shocks with as little rebound as possible (AE's bleeder caps preferred), it will provide the best overall 'feel' for asphalt.
This weekend, i am testing my theory that it is the Tc4 steering rack that causes the majority this 'off the corner, on throttle oversteer' problem and installing a Tc3 steering rack. I havent had a Tc3 rack in a Tc4 tub in many years, and that was on carpet... so we will see. If so, then the chassis can be tuned to go faster without this issue...