Steering Geometry How well a motorcycle or bicycle handles depends on the steering g...

Steering Geometry How well a motorcycle or bicycle handles depends on the steering geometry. One measure of stability is the trail, which is usually around 4 to 6 inches. The formula

gives the trail T as a function of the radius of the wheel r, head angle θ, and rake or offset R. find T if θ = 60°, R = 3 inches, and r = 14 inches. see the accompanying figure on the next page.