Originally posted by Slotmachine
InitiaiD is correct..but he forgot 1 important factor,when you rais the car you also need to go to a lower # on your droop gauges to account for the ride height change.
You got me dude
But if he set the droop settings at the 7 mm ride height and assuming he manages to sort out the problem concerning his ability to increase his ride height and maintains it back to 7 mm when the tires wear down, I don't think he needs to change the droop settings that he set previously.
Changing droop settings only applies when you purposely set the car's ride height to lower the chassis than you previously set before. Say if you were previously on a ride height of 7 mm front and back with 66 mm tires (say the front droop +1 and rear droop +8 is set) and now you decide that you want to use 62 mm tires to get a ride height of 5 mm front and back, then you need to add front and rear droop by 2 (i.e. front -1, rear +6) so that you get the same suspension uptravel as you intended the car to have in the first place when with 66 mm tires. This is the same method you need to apply when you refer to the different droop setups having different tire diameters that are on mytsn.
Here's something more... If you meddle with the car's ride height by using different tire diameters, then only the droop settings will need to be changed. If you meddle the car's ride height by using the collar of the shocks with the same (or different tire diameter), not only do you need to reset the droop settings, you also need to reset the camber of the wheels. Usually, the camber of the wheels do not change much if the ride height change by shock collars is minimal.
That is why when you're on a track and you suddenly find that your car is traction rolling in the front, the fastest way I use to cure the problem is to lower the front ride height. By lowering the front ride height, most of the times I cure the problem on the spot. Or that's what I thought initially...
Upon further investigation, by just lowering the front ride height without changing anything else to the front part of the car does not only lowers the CG of the car. The other things that are affected and changed are as follows;
1. Limits the front droop
2. If you change ride height with shock collars, then your negative camber will be reduced, thus reducing front traction.
The above are some of the ways to reduce traction rolling. Reducing the front ride height just by using the shock collars is a combination of things that you could do separately to reduce front traction rolling problems. Something to think about it...
Lastly from what I found out recently from reading the 705 forum on mytsn is that the front roll center increases (less front roll, less front traction) when you use smaller front tires but maintain the same front ride height as before. Food for thought...