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Free wheels & cogs
Bicycle freewheels
Everything about classic bicycle freewheels. Classic mean here 5-speed, 6-speed or 7-speed freewheels, but also 3 and 4-speed. A Maillard freewheels in combination with a Sedis chain is the typical French drive unit. Where the Italians put on high-end racing bikes on Regina. From time to time you should renew the sprocket on a bicycle, usually then you change the bicycle chain also.
A good freewheel should be free of wobbling, have good teeth and the right ration: adapted to the topography.