Quote:
Originally Posted by Paul SS
Wheel hop is not caused by the tires gaining and loosing traction, it is caused by the rear axle winding up under hard acceleration and releasing when it returns to it's original position and the winds up again. As the tires grip the opposite and equal reaction is for the rear axle to move in the opposite direction of the tires. Also due to the drive shaft turning the diferential one direction one rear tire (left) will try to raise off the ground.
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WHEEL HOP the wheels are hopping because they are gaining and losing traction...more common on stock tires less on drag radials and slicks..all as a result of lack of traction that causes other things to happen along the drivetrain.
Car alternates between obtaining and losing traction.
The sensation the driver feels is similar to driving over a series of railroad ties spaced about 6 inches to a foot apart. A bumpy, sometimes violently bumpy sensation. Can happen during burnouts, hard launches, or on 1-2, 2-3 shifts.
Some say that parts of the driveline actually twist somewhat due to the torsional forces, because keep in mind we are talking about two rear wheels when this is happening.
The up/down twisting force is enough to break driveline parts, usually manifest with a cracked differential case and since the diff is bolted to the tranny in our cars, sometimes the tranmission case and output shaft along with the differential output shafts are destroyed.