Forester AWD F4-2.5L DOHC (1998)
Constant Velocity Joint: Description and Operation
CONSTRUCTION OF FREE-RING TRIPOD JOINT (FTJ)
The FTJ is an improved version of the Tripod Joint (TJ) to minimize sliding resistance. In the previous TJ design, the roller rotated only in the axial
direction. When the joint was subjected to a "bending" angle in the sliding direction, the roller slipped causing resistance. In the new FTJ design, the
outer surface of the roller is provided with a free ring to minimize roller slippage, greatly reducing sliding resistance.