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Caster determination
Steer the right wheel to 20° right
Measure camber
Steer the right wheel to 20° left
Measure camber
caster = 1.5 x the algebraic difference in your camber measurements
Repeat the measurements for the left side wheel
Ex., right wheel camber = +0.5°, steered right, = -1.5°, steered left.
caster = 1.5 x {[camber, steered right] - [camber, steered left]}
= 1.5 x [+0.5°-(-1.5°)] = +3°.
For the left side, caster = 1.5 x {[camber, steered left] - [camber, steered right]}. This helps you keep the signs correct.
Other 'steer angles' are useable if you know how to determine the factor, as it won't be 1.5 for anything except 20° (actually 19.47°, but 20° is close enough for most purposes).
Norm
__________________
Automatics need not apply
'01 20th AE Maxima, 5 speed, wife's DD, stockish
'08 Mustang GT, 5 speed, my DD, slightly un-FStock
'95 626 LX-V6, 5 speed (spare DD and weenie EP autocross car, Prepared just enough, sometimes)
'79 Malibu, 5 speed (retired, awaiting decisions . . .)
Last edited by Norm Peterson; 03-17-2009 at 09:08 AM.
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