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Donomik:
Great, you have Fred's book. He covers everything . . . just a little hard to find it.
An M8F and it can't go full throttle? Sure isn't the suspension as the limiting factor unless there is a serious deflection. Wonder if it's ever been wrecked and a suspension point didn't end up in the right place?
About location of the rc below ground, notice from the drawings that the rc can't go below ground if the lower arm is parallel to the ground. Of course this changes with ride height. Another thought: It's best to keep the control arms as long as possible to limit this change. Notice the typical F1 suspension. This limits camber change with wheel travel, particularly important with wide tires.
The reason suspensions don't (shouldn't) have an rc below ground is simple, the car would roll too much. The idea is to end up with an rc pretty far away as possible and at about two to four inches above ground with the front one being lower.
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Tom
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough HORSEPOWER." Mark Donohue
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