Quote:

sounds like there is no set rule- start neutral, and adjust as necessary? neutral with the driver in the car? or without? please pardon my ignorance, but i've raced nothing but leaf spring cars.



No there is no set rule as to pre load... that is
determined on which way the car goes on launch...
and that means at the line to maybe 50-60 ft out...
really anything beyond that can be alignment or brakes
or other factors.. like Erics car likes a touch of
negative pre load, my car likes about 10# of +pre load..
so you get the idea.. and once you take the play
out of the bar (upper right) it doesnt usually take
much unless something is wrong... all this is based
on the zero of the car at race weight...
Note... if you go to square up the car like slingshot
said make sure what the front end is.. my car has
3/4" of stagger built into the front end(right tire
is set back 3/4" to give me a longer roll out) and
a lot of chassis shops do the same thing