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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 08-07-14, 12:13 PM   #1
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any article about crankset torsion

Hi fellas

I was talking to a friend about the reason why his single speed is dropping the chain when he puts a lot of power on it. I'm looking for any document that explores this and explains how it happens.

I know some bottom brackets, some cranks, some crank arms are stiffer than others, but I failed miserably in the search.

I'm asking here because the fixie folk knows about this better than the common riders

thanks in advance,

[update on release ]
found this **** here: Crank Review #5 - Fair Wheel Bikes
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Old 08-07-14, 02:36 PM   #2
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Cool link, but I imagine all of those cranksets are incomparably stiffer than your buddy's. Also I would guess the frame flexing combined with a bad chainline is the culprit, as the crankset's arm flex doesn't affect the plane the ring turns in.
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Old 08-07-14, 02:46 PM   #3
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Just pull the wheel back and tighten up the chain.
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