Function

Even in highly competitive motorcycles, the gearbox generally takes up less space than in the motor car. This is due to the lack of a reverse gear and the synchronisation. The construction is also simplified, which makes the driving, and particularly the gear changing, not as quiet as the motor car. Changing claws can only seldom find each other without a slight delay and without clacking noises. The gearbox whine, also found in modern motorcycles, indicates a little, one of the disadvantages of this type of gearbox with straight-cut teeth.

How it works

The above construction is easier to understand if one interprets the colours correctly. The gearbox consists of three shafts, whereby, the light green drive shaft continues on to the light brown drive shaft, it is however, not rigidly connected with this shaft. Mounted below it, is the light blue layshaft. Cogs and shaft of the same colour have a solid but sliding connection with each other. There are two of them on the drive shaft, they do however, move back and forth on the shaft. On the layshaft, there are also two, they can however, only move together as a pair.
The arrangement of the individual gear-wheels can be quite different from the illustration. The gear-wheels were arranged like this, so that a system results, which makes it easier to understand.
Gear-changing…
- the gearwheel pair at the bottom, 1st and 2nd gear,
- the upper left gearwheel, 3rd and 4th,
- the upper right gearwheel, 5th and 6th.

If a gear is not engaged by the changing claws of a gearwheel, its meshing is not affected by the power flow. At this moment it is insignificant whether it meshes with its partner gear-wheel over the full width of the gear- wheel or not.