Originally Posted by speed6
Thanks people nice write up, but no one mentioned how to use of droop gauges or you don't recommend them?
Those gauges you are talking about are down stop gauges. unless you sit down and make a relations table btw ride height + tire diameter + down stop value= which will give you a particular droop value , you cant measure droop with them gauges (if i am wrong pls correct me ) as Droop refers to the amount that the chassis travels downward after the car is dropped and the wheels touch the ground; it is also the amount that the chassis travels upward before the wheels lift from the ground.
this is how i measure droop .
lets presume your car is symmetrical and balanced front to back and left to right .
(lets say we are trying to work out the droop of the rear end on the car )
have your car on a level flat board with all wheel on it.
and say you have setup ur car with down stop value of 2 mm.(rear)
and you have setup your car to a ride height of 5 mm
now press down on the rear end of the car few time to let the shock settle . lets say ur ride height still measure at 5mm.now keep ur car steady and push a ride height gauge right in the center (use a slopping ride height gauge rather then a step up ride height gauge. )
so now ur ride height gauge is rite under the center at the back end of the car . now push the ride height gauge under the chassis(keep the car steady in one place) till the wheel just lift of the the flat board . now measure the figure on the ride height gauge . Now lets say the value where the wheel are just in air and not touching the board is 9 mm .
So your droop is 9 mm - 5 mm = 4mm . so your car droop's 4 mm . this is how i measure droop.
a 2 mm down stop will give you different droop value with different ride height and tire diameter. hope it makes sense . its past my bed time