Common name for a manual transmission
Hard to tell what you mean here. There is a design which roughly fit the description of bike gear box - the NuVinci, and that one use a CVT(continuously variable transmission). For a CVT it's...
need to replace the wheel gear box on a 2002 ford excursio.
Smoother transitions between gear ratios. Less 'grinding' noise A more pleasant driving experience Less wear on the gear box
The gearbox allows the following functions: a. to increase the engine torque b. to enable a free-wheel or neutral position c. to be able to reverse.