a arm mounting points

[Stomper]

[Stomper]

Camber gain is the amount it changes from ride height to full bump.
 
Getting this set-up correctly with A-arms can be kind of a pain. If the lower arm is below the centerline of the axle it needs to get longer. Sometimes this is hard to do with brake rotors and stuff getting in the way. Your best bet is to have to lower arm pivot at the same plane as your axle. Then you can dick around with the upper arm length to get the desired camber gain without getting to much in the way of plunge.......

I hope this does't sound too stupid, but does'nt the lower a arm have to be below the centerline of the axle? 

[fabr]