I just wanted to comment on one more thing, I know I am supposed to be writing a book about this sort of thing. But this is one area that I get most calls and emails on. So I figure if I write about it now, some of you can gain from it faster.
Topic of discussion....... DROOP
DROOP GAUGE MARKS MEAN NOTHING!!!!!!!!!
(did not expect to hear that huh?)
When your car is sitting static, take a measurement of the actual ride height. Then hold down on the rear tires and lift up on the rear of the chassis, and take a measurement again. Subtract the two numbers, and that is your actual droop. (Do the same for the front of the car)
Droop = Negative Suspension Travel
If at static you measured 5mm, and when you lift the chassis while holding the tires you measured 7mm. Your Negative Suspension Travel
would be 2mm. So if someone ask you how much droop you have, you would answer. I have 2mm of droop, or negative suspension travel.
Now, here is where the droop gauges are important! Once you have established your rough droop settings, you must go back and take a droop measurement on each side of the car. You will want to make sure it is even on both sides, obviously. After you make sure they are equal, you will want to go back to the first method and recheck. For the first few times you do this method you may go back and forth a few times, but once you understand it, it will be fast and simple.
So why donít the droop gauge numbers mean anything?
Driver #1 reads 6mm on his droop gauge for the rear of his car.
Driver #2 asks driver #1 what his rear droop setting is.
Driver #1 says 6mm
Driver #2 sets his rear droop to 6mm
Both drivers are running 5mm ride height.
Letís say driver #1 was running 60mm tires, and driver #2 was running 57mm tires. Now think about the method of checking droop using ride height measurements........ Think both drivers really have the same droop? Nope, driver #1 is going to have 1.5mm more actual droop. 1.5mm!!!!!!!!! THATíS A LOT!!!
So why do people compare droop gauge readings? I really do not know the answer to that. I suppose that if everyone used the EXACT same tire, it may work. But why even get that complicated? Why not just standardize the method of measuring droop? I think it would be much easier, and understandable.
Same thing with gear ratio, comparing gear ratio only works if you are running the EXACT same size tire.........ok... I will save that one for later....