Every other gear diff on the market, except the Wavetrac, will not power the gripping wheel, and during the transition from accel to decel, all other gear diffs, except Wavetrac, do nothing. Why is this? Other torque biasing diffs divide the torque between the two axles up to the available grip of each tire.
There is an innovative, patented device at the center of the Wavetrac diff that responds during these specific conditions where there is zero or near-zero axle-load. At or near zero axle-load, the axles, and therefore each side-gear in the differential, start to turn at different speeds. This speed difference causes the Wavetrac device to step into action. Wave profiles are precisely engineered and placed on one side gear and it’s mating preload hub. As the two side gears rotate relative to each other, each wave surface climbs the other, causing them to move apart. This creates enough internal load with the Wavetrac to stop the zero axle-load condition. With that, the drive torque is then applied to the wheel on the ground, the one that has grip and traction, and the differential will keep the power down.