Originally Posted by
EAMotorsports
Most of us Team guys have gone away from lowering the steering block (sanding it down) as its really hard to make sure they are exactly the same and making the upper arm longer does the same thing without changing roll center as much as sanding the block. Start with 1.5mm shim (we use the black shims from the T3 line of cars that go on the bulkheads to widen it out at the roll center pieces). You will have to cut the little dimple off the lower arm that fits inside the caster block. Everything fits tight enough though the caster block wont move any on the arm.
EA
First packs with the X12 done. Much better than the too narrow front end and too short chassis XII Link!
But the basic setup was not good.
Way too hard side springs, changed to AE Blue springs and harder tube oil --> great improvement.
Also the front springs seem too soft - changed those to grey ones.
I started with 1.5mm shim to make the upper arm longer. In what kind of setup window have you tried the front end?
Also would like to know tips about springs (side and front) and how to remove play from the front end.