With more kickup a 2wd car will ride better over obsticals. With a 4wd the front wheels drag the car over bumps but with 2wd the car is pushed into them, so the suspension has to work in two ways, one to take out the up and down but also the forward impact. With no kickup if you hit a blunt object most the force would try to move the arms back so the wishbones would hardly move and the car wouldn't ride the bump and either flick up or dig in. With kickup the arms can move back aswell as up and the bump is absorbed better.
The downside of kickup is that you get front end dive when braking with the front wheels, which isn't a problem with 2wd but with a 4wd when you bang on the brakes the front would dip and you get alot of forward weight transfer.
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Mark Dyson
Clown
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