I know im not quite to setting exact heights and apecs yet, but i needed to think through it before i start mounting hard parts.
Its an ex nascar chassis, with massive adjustment in ride height possible. I know i want to keep 2-3 inches to the lowest point on the chassis.
However, how much droop travel should I have?
Upward travel?
Im looking for ballpark estimates, and reasoning. Mostly level lca is a goal, but its mostly level over a wide range of frame to ground height. Its really a slick chassis in that regard.
From that era of NASCAR chassis. The frame rails will.be about 5" at the front and 6 "or 7" at the rear.
There will be lower items, like the exhaust pipes under the frame rails, so the lowest point will not be the rails.
In reply to stafford1500 :
That will provide about two inches of droop travel at that height. Is that enough? If so, ill set the rail height at 5/6 and do everything in my power to keep lowest point of "stuff" 2-3 inches minimum. Id prefer more, but it's not a street car.
Am i overthinking this? Never been here before.
Two inches of droop for typical autocross/track stuff will be plenty. If you use all that at speed the car will feel like it is rolling over on the doors
In reply to stafford1500 :
Awesome.
Thank you sir!!!
kb58
SuperDork
6/28/22 11:22 a.m.
Let's start with the basics, how will it be used. Smooth track? Bumpy track? Street use?!
Mostly track, some hillclimbs, some autocross, occasionally on street for testing or cruise night.
Tracks locally are cmp and vir. Will also be running rovals at rockingham, Darlington, and Charlotte.
I based my front ride height (solid rear axle car) on my suspension angles/camber curve. I started with the standard "lower control arms level" and went from there, and basically made the car level/slight forward rake on the rockers. I didn't bother to look at frame distance to the ground other than to make sure I wouldn't get high centered on something stupid.
There's no particular engineering reason why LCA need to be level.
Yes, it results in minimum scrub in both compression and droop.
But there are so many other nuances that outweigh that, depending on your use case.
I'm guessing that you don't intend to use your trick ex NASCAR chassis for hypermiling.
