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Cyclometer

From WikiPedalia

A device for measuring how far a bicycle has traveled, an odometer. Older cyclometers were mechanical, usually mounting down near the front axle. They would commonly have a star-shaped wheel sticking out next to the spokes, and a special striker pin, bolted on to one of the spokes, would turn the star wheel one point each time the wheel's revolution brought the pin past the cyclometer. This type of cyclometer was in common use from the turn of the century until the 1970's.

Star-wheel cyclometers, such as the Lucas unit, suffered two serious problems. They made an annoying "tink-tink-tink" noise. At high speeds, the star wheel would sometimes turn too far when hit by the fast-moving striker, then, the next time around the striker would hit the tip of one of the star points, sometimes knocking the unit out of position.

The Huret Multito solved these problems by substituting a rubber belt drive in an otherwise similar unit.

With the development of inexpensive electronic cyclecomputers, mechanical cyclometers became obsolete.