The in a manual-shift motorcycle transmission is typically an arrangement of plates stacked in alternating fashion, one geared on the inside to the engine and the next geared on the outside to the input shaft. Whether wet (rotating in engine oil) or dry, the plates are squeezed together by a spring, causing friction build up between the plates until they rotate as a single unit, driving the transmission directly. A lever on the handlebar exploits mechanical advantage through a cable or hydraulic arrangement to release the clutch spring(s), allowing the engine to freewheel with respect to the transmission.
The above pictures are of the motor and transmission after final assembly, and after final installation. The assembly weighs about 250 pounds, so I used the shop crane to move it into position to install it. The mounts I made include lifting eyelets on both ends, to allow easy lifting with the shop crane. The engine compartment of the car was modified as well (see the page) as were the motor mounts (See the page) as part of the work for preparing to install the motor and transmission.
|motor and transmission assembly, ready to be installed|
A motorcycle transmission is a created specifically for applications. They may also be found in use on other light vehicles such as and , offroad buggies, , mowers and other utility vehicles, , and even some superlight racing cars.
ÂA motorcycle engine can create an enormous amount of power, which must be delivered to the wheels of the vehicle in a controllable way. The motorcycle transmission delivers power to the rear wheel through a series of structures that include the gearset, the and the drive system.