Let me start with basic mechanics here.
You have a bar balancing on a pivot point with equal length on both sides and press down one side (primary) with 100 lb - the other side of the bar (secondary) would be able to move 100 lb.

If you would elongate the secondary side to double its original length the force of 100 lb on the primary side would result in only 50 lb at the tip of the secondary side.



Effect larger tires have on stopping force

Effect larger tires have on acceleration and performance (torque)

		Comments
		Thanks for a great site. It is a masterpiece of relevance and clarity. Look forward to seeing your book. Aurelio 04-18-05