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2. Manual transmission - Wikipedia

   en.wikipedia.org/wiki/Manual_transmission

   The design of most manual transmissions for cars is that gear ratios are selected by locking selected gear pairs to the output shaft inside the transmission. This is a fundamental difference compared with a typical hydraulic automatic transmission , which uses an epicyclic (planetary) design, and a hydraulic torque converter .

3. Transmission (mechanical device) - Wikipedia

   en.wikipedia.org/wiki/Transmission_(mechanical...

   A transmission (also called a gearbox) is a mechanical device which uses a gear set—two or more gears working together—to change the speed, direction of rotation, or torque multiplication/reduction in a machine. [1] [2] Transmissions can have a single fixed-gear ratio, multiple distinct gear ratios, or continuously variable ratios. Variable ...

4. Layshaft - Wikipedia

   en.wikipedia.org/wiki/Layshaft

   Sectioned 3-speed manual 'crash' gearbox, for a car c. 1935. A layshaft is an intermediate shaft within a gearbox that carries gears, but does not transfer the primary drive of the gearbox either in or out of the gearbox. [1] [2] Layshafts are best known through their use in car gearboxes, where they were a ubiquitous part of the rear-wheel ...

5. Non-synchronous transmission - Wikipedia

   en.wikipedia.org/wiki/Non-synchronous_transmission

   Three-speed sliding-gear non-synchronous transmission Non-synchronous "crash" gearbox; commonly used today in semi-trucks and tractors, and formerly used in automobiles pre-1950s. A non-synchronous transmission, also called a crash gearbox, is a form of manual transmission based on gears that do not use synchronizing mechanisms. They require ...

6. BorgWarner T-5 transmission - Wikipedia

   en.wikipedia.org/wiki/BorgWarner_T-5_transmission

   The SR4 was a light-duty 4-speed manual that used ball and needle bearings on the countershaft with bronze synchronizer rings. The T4 improved this design with tapered roller bearings on the input and output shafts and a straight roller bearing on the counter gear. The T-5 is a T4 with an added overdrive gear. [2]

7. Volvo I-Shift - Wikipedia

   en.wikipedia.org/wiki/Volvo_I-Shift

   The Volvo I-Shift is an automated manual transmission developed by Volvo subsidiary Volvo Powertrain AB for Volvo Trucks and Volvo Buses, with 12 forward gears and 4 reverse gears. It became available for trucks in 2001 and later buses in 2004. Inside view of a Volvo I-Shift transmission