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I haven't taken apart a coaster hub since I discovered girls but I remember there was a number of friction plates like a wet plate clutch that did the braking. These are actuated by forcing them together when you press the pedal in reverse. I don't recall details but I wonder if there might be a left handed thread in the assembly that was tightened in ...


Rear bicycle axles are often over stressed. Every old ten speed that I took apart had a bent axle because when climbing or accelerating it is possible to create a bending moment that will exceed the yield strength of the steel. If the axle was broken in the center,between the bearings, it is more likely that the fault was not the loading but bad metallurgy. ...

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