The distance from the rubber snubber to the spring eye can usually be adjusted. So either get the right traction bars for your particular model, or you can lengthen or shorten yours to work correctly. Many springs have been bent by incorrect snubber placement. Some manufacturers just let them hit the spring, but that is the weak point of the spring we are trying to save. The rubber snubber needs to contact the spring 'eye'. This stops the twist of the axle and spring and makes the tires dig in and go. As the axle tries to twist, the bar twists up and comes into contact with the leaf spring 'eye'. 'Slapper' bars work by stopping the twist of the rear axle. Another method is to use the 'Caltrac' style traction bars. One way to fix this is to use traction or 'slapper' bars. As the spring snaps back, it can cause wheel hop. (When you drop the hammer.) The torque from the rear axle can try to twist the leaf spring into an 'S' shape. Axle wrap can happen to leaf springs under hard acceleration. Traction bars were created to cancel the effects of axle wrap. Traction Bars! The Way to Eliminate Axle Wrap!
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