Axle Wrap

Axle wrap is the deformation of the leaf spring into an "S" shape caused by the rotation of the axle opposite the torque created by accelerating. When power is applied, the pinion pivots upward, and once this reaches a critical point the leaf spring starts to deform. This unwanted movement allows the pinion angle to change and then the springs twist and untwist rapidly, causing the rear to hop under power. This puts a lot of stress on many driveline components such as u-joints, drive shafts, and yokes. The snap back effect from axle wrap is commonly referred to as wheel hop, which causes handling problems and can result in rolls in off-camber situations.Axle wrap is a major drive shaft breakage problem in lifted Jeeps and is one of the major problems with using Spring-Over-Axle conversions. Spring-over axle setups are far more prone to axle wrap than the standard set-up because they allow more leverage for the axle to twist against the springs. Axle wrap is also increased by the use of lift blocks and weakened or soft springs. Additional horsepower and larger tires will also increase the problem potential for axle wrap.

One of the best ways to deal with axle wrap is to use Warrior torque bar systems. These torque bars keep the axle in place during speed changes, which improves traction and direction stability in lifted Jeeps. By controlling this movement they help eliminate axle wrap and, lessen shackle and driveshaft problems during sudden acceleration changes.