riff_raff wrote:A lightweight, mid-engine, RWD single seater with no aero downforce and no under steering is probably OK with a large caster angle, since the steering force will still be light. But a heavier car, that requires limited steering inputs and has lots of downforce like an AUDI R15, probably wants a somewhat smaller caster angle and trail.
Scuderia_Russ wrote:In most instances we are able to set ours with a digital bubble on the upright before turning from lock to lock to see what readings we are getting. Obviously different vehicles have different optimum values.
Belatti wrote:Here I found a bit more "serious" way to measure caster.
Check out at equation #8 and its limitations.
speedsense wrote:Another "cheap" way to check castor. By turning the wheels to full lock left, measure the camber... turn the wheels full lock right, and remeasure the camber (same wheel), the difference in the change of camber, is your castor amount.
Other reasons that castor works well... increases camber gain to the outside tire whilst turning the wheels (good for radials,not good for bias ply)
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