Originally Posted by Crashby

You’re close! The thing you forgot to remember is that under braking, with the 10 deg reactive caster blocks, the castor decreases when you are decelerating or applying the brakes because the front spring compresses. This reduction of cast will make the car turn more as the car slows down. Upon accelerating, the springs return to their uncompressed height and the caster increases again, making steering easier as the car accelerates.

If you look at a top fuel dragster, they have so much castor that sometimes when maneuvering in the pits, the wheels will flop over to one side or the other because there is so much caster designed into the front end. At 300 plus mph, you need all the steering you can get!

Clear as mud, huh?