In automotive engineering, a (short for torque tube transmission) refers to a drivetrain layout where a rigid "torque tube" connects the transmission to the rear differential. This design is primarily used to eliminate wheel hop and manage the physical forces (torque) produced by the engine and drivetrain. How the System Works
: When you accelerate, the rear axle tries to rotate in the opposite direction of the wheels. The torque tube resists this "twisting" force, transferring it directly to the vehicle's chassis through the transmission mounts. tube tranny
: These front-engine Porsches utilized a transaxle and torque tube for near-perfect 50/50 weight balance. In automotive engineering, a (short for torque tube
: Because the tube is rigid, it also helps locate the rear axle, often allowing for simpler rear suspension setups like those found in older Buicks or modern performance cars. Notable Vehicle Examples The torque tube resists this "twisting" force, transferring
This setup is iconic in several specific automotive circles:
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