'Bu:

You have the right idea, and the right method. All I was pointing out was that the Ackerman effect is not limited to that one application. As a matter of fact the basic and most common application of the Ackerman effect is in the car you drive every day. It is what makes the wheel on the inside of the turn attain a greater steering angle than the wheel on the outside - the inside wheel has to roll in a smaller circle than the outside wheel.

Bill.