View Full Version : Adj. Upper control arm

10-11-2010, 12:34 PM
I have the adjustable upper control arm and want to know how do you know the correct location of the ball joint in regards to the lower ball joint? Should it be in front of or direstly in line with the lower one? I can make one rod longer and one shorter which moves its location. I just want to know whats the correct position then i can turn both rods equel to get my camber. Thanks for any help.

10-12-2010, 02:42 PM
What you are asking about is caster - the amount that the upper ball joint sits behind the lower ball joint. You will want both uppers to sit behind the lowers, 4 degrees LF and 6 degrees RF are good starting points. You can play with the caster and camber settings to adjust the car to your track, you might want to ask some of the drivers (not the back-markers) at your track what they are running for caster and camber.

10-13-2010, 07:00 AM
thanks iceman. thats what i was looking for a good starting point.