Originally Posted by Korey Harbke

I just put the car flat on the setup board and take the shocks and tires off. This way the suspension is totally free to move. Then when looking down the length of the car measure from the center of the hinge pin, down to the setup board. I've found it's easiest to just do this with a set of calipers, or a nice small precision ruler. You are looking at the hinge pin so the profile looks like a circle, and you are just measuring from the center of that circle, to the setup board. The arm has nothing to do with the way I measure droop on this car now. This is the way all of the worlds team measures as it takes inconsistencies from the arm out of the equation.

If you look at Hara's Setup sheet from the TITC, you'll notice they drew lines and put measurements right by the suspension arm showing 10mm in front, and 8.5 in the rear. This gives you an idea of where and how I measure it.

http://www.hpiracing.co.jp/contents/..._tc_090222.pdf

-Korey