US Patent 7975794 Suspension for tracked vehicles

A suspension system for a tracked vehicle providing a wide range of performance characteristics via a user-adjustable overload spring assembly which engages a rear suspension element. An optimum spring force can depend on the both operator characteristics and local operating conditions. A user is afforded the ability to adjust a rear suspension system to provide desired ride characteristics. A suspension system including a movable stop to define a mechanical relation between a rear suspension arm and a front suspension arm is also disclosed.