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Underbone and miniature motorcycles often have a three to five-speed foot-shift lever, but the clutch is automatic (usually a centrifugal clutch). This type of clutchless (no manual clutch) transmission still must have the gears shifted manually by the rider, and the system is commonly known as a semi-automatic transmission.
Semi-automatic transmissions were almost exclusively used in motorcycles and are based on conventional manual transmissions or sequential manual transmissions, but use an automatic clutch system. But some semi-automatic transmissions have also been based on standard hydraulic automatic transmissions with torque converters and planetary gearsets ...
The dual-clutch transmission DQ200 of the Volkswagen Group was the subject of recall actions in several countries due to technical problems. [55] In 2009, 13,500 vehicles with DQ200 were recalled in the USA due to issues and sent to workshops.
The original Hondamatic, like all following Honda automatics, featured gears on parallel axes rather than planetary gears like most other automatic transmissions. The two gears for each ratio - one driving and the other driven - are in constant mesh and each ratio is engaged by a dedicated clutch connected to one of the ratio's two gears.
The VFR1200F is available with either a conventional constant-mesh manual transmission, with shaft-drive, or an automatic dual-clutch transmission (DCT). [17] The DCT version, known in North America as the VFR1200A or in other markets as the VFR1200D, has dual clutches, one operating 1st, 3rd and 5th gears, the other operating 2nd, 4th, and 6th ...
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 ...
Historically, automatic transmissions were less efficient, but lower fuel prices in the US made this less of a problem than in Europe. [7] In the United Kingdom, a majority of new cars have had automatic transmissions since 2020. Several manufacturers including Mercedes and Volvo no longer sell cars with manual transmissions.
The Tri Glide is based on the Harley-Davidson Electra Glide Ultra Classic, a conventional two-wheeled touring motorcycle. [1] Harley-Davidson entered into an agreement in 2008 with Lehman Trikes of Spearfish, South Dakota to provide parts and "conversion services", [ 2 ] and final assembly of the Tri Glides was initially completed at Lehman's ...