Optimal High Speed Trail Calculator
This calculator finds the "optimal high speed trail" for a specific design. Note that in many cases this may be more trail than is practical for general use. A trail value greater than 5 inches will generate excessive fork flop. The trail calculator should be used as a design aid to give you a good idea of how changes in your bikes geometry effect the need for additional trail. This equation is still being developed. Calculator updated 9/11/06 to provide more realistic trail values. Personally I feel that the numbers generated with the "Jet Fighter" K5 value are the best for me. YMMV.