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i have a chainset from a while ago thats been knocking about, wanting to use it on my newest project. how do you work out what shaft length is needed on the bottom bracket, i know i need a 68mm b/b but not sure on the shaft.
the chainset is a square taper set and the only measurement written on the cranks is 170mm.
i have searched the forum for a related post but havent been able to find any but feel free to direct me to it if i have missed it.
cheers -
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Hi I'd like to set up a fixie with two chain rings and a rear hub with two fixed sprocket. I wanna achieve a high and low gearing. Was wondering how you can calculate which gearings will work with the same chain length. I know this can be done I met someone a while back who had done it but can't remember what ratios he used. Also Shelton brown mentions it but they aren't the ideal gearings I want. Cheers
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cheers for the response guys