Suspension design

[johnny99]

I have designed front suspension, double wishbone, unparallel, unequal length. Due to packaging and that I have some parts on the shelf, these are my figures

SAI (kpi) 12 degrees
Scrub radius 34mm
0.5 dergrees camber gain in bump per 20mm bump ( 2deg roll)
R/C height 35mm.
60% Ackermann.

The car is rear engine.


Any input is helpful

John

[EfiOz]

COG?

The roll centre may be too low for a rear engined car. It's hard to get tyre temp and initial turn in can suffer otherwise.

[johnny99]

Thanks for your reply. I don't know how to calculate the COG is the design phase, only guess it's a low from experience. Due to limited resources, I looked at the RC height of the Lotus Elise and similar car, although my track is wider at 1620mm. While on the subject, I was thinking of a RC height of 60 to 70 mm for the rear. The engine and transmission are from a Subaru Impreza, EJ20T.

John