cotterless crank
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crank — [1] An arm set at right angles to a shaft or axle, used for converting reciprocal (to and fro) motion into circular motion. Also see cottered crank cotterless crank flat crank hand crank [2] The action of trying to start a vehicle engine or an… … Dictionary of automotive terms
Bottom bracket — A square taper cartridge bottom bracket. The bottom bracket on a bicycle connects the crankset to the bicycle and allows the crankset to rotate freely. It contains a spindle that the crankset attaches to, and the bearings that allow the spindle… … Wikipedia
Unicycle trials — is a form of unicycling which involves participants attempting to ride a unicycle over obstacles without any part of the rider touching the ground. [ [http://www.unicycling.org/IUF/rulebook/trials.html IUF Unicycle Trials Regulations for UNICON… … Wikipedia
