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A manual transmission (MT), also known as manual gearbox, standard transmission (in Canada, the United Kingdom and the United States), or stick shift (in the United States), is a multi-speed motor vehicle transmission system where gear changes require the driver to manually select the gears by operating a gear stick and clutch (which is usually ...
Most early automobiles were rear-engined, using a single-speed transmission and belt-drive to power the rear wheels. In 1891, the French Panhard et Levassor automobile used a three-speed manual transmission and is considered to have set the template for multi-speed manual transmissions in motor vehicles.
Float shifting can reduce clutch wear because it is used so much less (only for starting from a standstill). Conversely, improper engagement of a gear (when the engine and transmission speeds aren't matched) can cause wear on the synchros and lockouts, and damage the gears by physically grinding them together due to a difference in speed.
Basically there are two types of motor vehicle transmissions: Manual – the driver has to perform each gear change using a manually operated clutch; Automatic – once placed in drive (or any other 'automatic' selector position), it automatically selects the gear ratio dependent on engine speed and load
Powershifting, also known as full-throttle shifting or flat-shifting, is a method of gear shifting used with manual transmissions to reduce the time where the driving wheels are not powered. Unlike during a normal gear change, in a powershift the driver does not let off the accelerator.
Before the introduction of transmission synchronizers in 1927, [2] double clutching was a technique required to prevent damage to an automobile's gearing during shifts. Due to the difficulty and most often unnecessary redundancy involved in the technique, coupled with the advent of synchronized gearing systems, it has largely fallen into disuse in light vehicles.
The J-series is a 6-speed manual transmission for rear-wheel drive applications, built by Aisin Seiki (Type AZ6). This transmission was used in the Altezza AS200 and RS200. The same Aisin AZ6 transmission is also found in other models such as the Mazda MX-5 (Miata), Nissan Silvia, Mazda RX-8, Lexus IS and Toyota 86/Scion FR-S/Subaru BRZ. Models:
With the gearstick, the driver can use buttons to manually select gear, although this feature is disabled on some vehicles (where the gearstick has no buttons). The different versions of the I-Shift are named AT (Automatic Transmission) or ATO, where the O stands for overdrive. The standard versions have a gear ratio of 1:1, while the overdrive ...