Crankcase

From CycleChaos
Jump to navigation Jump to search

External housing for the crankshaft.

Vertically split[edit]

Vertical crankcases are crankcases that are split vertically.

Horizontally split[edit]

The crankcase has a seam on the horizontal plane. Horizontally split crankcases were a major innovation when they were first introduced. They caused the bikes that featured them to be FAR less prone to oil leaks.

Cassette type[edit]

The gears are loaded in from one side.