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London & North Western Railway Society
Glossary for the LNWR Society

Glossary Results for Word "Cottered Fitting"

Cottered Fitting

A cotter pin is a wedge-shaped solid pin designed to lock a shaft to, for example, a crank or a pulley, by means of a flat on the shaft and a transverse hole in the crank or pulley boss.

When cycle chainsets started being produced which used square tapers or splines instead of the cotters employed for most of the last century, they were and are referred to universally as cotterless chainsets.