Does anyone have any record of the front and rear camber gain built into the factory suspension settings?
I have been asked a question WRT this and the lower arm changes to increase neg camber, but Porsche are not much help.
Factory hardware will alllow up to around -1.0 to -1.1 deg of negative camber. Beyond that you will need camber plates or other mods.
my apologies I see I did not make my question clear. Camber gain is the increase in camber above that of roll, so if your cayman rolls 1 deg the actual wheel camber increases (or gains) by another margin on top of that.
I'm still not sure I understand, but increasing caster is supposed to provide a bit more negative camber in a turn than was set staticly. Even if that's what you're asking about, I don't know the precise answer.
I understand what you are saying, but I've seen that information in any form on any car. Obviously you have, but I can't imagine where you would get it.
Due to the angle that the struts lay in at I think we might get some minor gain. Not anywhere near what an unequal length A-arm setup would see though.
Most macpherson strut cars have no camber gain with roll. The only way I can think of determining this is to build a small model based on measurements taken from the car.
-Trent
Most macpherson strut cars have no camber gain with roll.
Dont think that is accurate. if that where the case you wouldn't see additional neg camber when lowering a car (prior alignment). anybody who put springs or coilovers make note of their before and after camber setting on the front?
I was able to get more neg camber with coil-overs on my prev 996 but I think this was due to reduced distance from strut top to strut lower mount. If you think of a triangle from strut top to strut bottom to wheel center, shorter strut/spring reduces angle from wheel center to strut top, hence more neg camber.
The amount of suspension height change you have to make to gain negative camber with a strut car is quite severe compare to an unequal length A-arm car. On a strut based road race car you need to run a lot (-2.5 to -4 degrees) of static negative camber to compensate for the small camber gain with roll. On an A-arm car you can run less static (1-3 degrees) as the camber gain is more pronounced and increases with roll. Strut cars typically hace a fairly linear camber change with roll.
