ok guys i need some help. just put another set of springs on my qa1coil overs. need different opinions on preload set up and rebound clicks. i currently run about 6clicks on a 12 click qa1 . springs are 130's . i have preload set in about 6 threads on left /8(amount of thread after preload adjuster is tight looking from bottom of shock) on right.front on ladder bar set on hole #2 upper end for harder hit. just needs some comments on set ups. thanx maverick racers!!!
my setup is somewhat different. 4 link w/ coilovers. much of getting the rear susp is trial & test. we set up mine by setting springs/shocks equal & lengthened the upper pass bar 1/16 turn for preload to offset driver weight. then started to tighten shock extension one click at a time until 60' time stopped improving, then went back 1 click. i almost never alter this setup, unless they are prepping the line with 20-50 oil. i just alter tire pressures since my slicks are a little oversize for s/st (15x33.5). if you are set with a slight preload on pass side to offset driver weight, you probably are at a good start point for testing. start limiting shock extension until your 60' slows, then go back to previous setting. if the car doesnt go straight, jack the weight up on the same side to adjust. ( pushes rt slightly, try 1/2 turn up on rt coilover to make weight on rr more.)
i thought going up on clicks takes away hook and going down on clicks allows car to squat'hit harder. i've been at 6 clicks for awile.
what you should look for is to turn the lift of the rear (separation between rear tire & body) into forward motion by limiting the extension of the shock. do you yank the fronts out of the beams to get a pro lite? if so, then watch your lites as you limit movement. you could make it move forward quicker, but clear the reaction beam slower.
will try i use to yank em out of the beams when fronts shocks were 90/10 when i went to73/30 it got a lot better. i'll try going up on clicks on rear shocks and watch my sixty foots. thanx for the tips
There are so many variables that affect your shock/spring settings that ONLY, and I repeat--ONLY trial and testing will you know what works best. What works on mine, may not be worth a flip on yours. Vertical center of gravity, horizontal CG, instant center, front weight, rear weight, anti squat, track conditions, weather conditions, rear tire size, gearing, SLR....oh, I could keep going. I always tell people that a good suspension is only as "good" as you are willing to try different combinations. Mine: 130 lb-in springs on the QA1's 8 clicks, IC is 61" out and 4 1/2" up, 122% anti-squat with 31.5-13.5 Hoosiers C07's. V CG is approx 14" high (yes, low CG...car will leave extremely flat and hook on gravel if I set it up that way). Front has QA1 stock mount M2's with the stock M2 springs cut one full coil off, and I normally adust the shock settings based on track condition, reaction times, weather, and if I'm worth a flip as far as a driver on that particular day. Even front tire pressures play a role in the front shock settings, but not so much as everything else. I see where you are running ladders. That really limits the amount of tuning capability, but they do launch harder in general. Find what works and stick with it. Oh, and don't forget to log it all...just in case something happens where you lose those settings.
