Bike Repair Tips and Tricks

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For bicycle repair tips and tricks, as well as questions, mostly in picture form, from all over the web.

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If your crankset is very close to the bike frame like in this picture, you either need a longer bottom bracket or to replace your middle chainring with a smaller one. (sopuli.xyz)

submitted 2 years ago by zksmk@sopuli.xyz to c/bike_repair_tips@sopuli.xyz

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The bike's body bends during use and it will scratch itself on the ring teeth and the chain. Sometimes older bikes have a bigger number of teeth on the middle chainring like this (s:m:l ring teeth ratio is about 32/48/52 teeth).

numbered bike anatomy graph

chainring = 31; bottom bracket spindle = 26; bottom bracket shell = the hole where 27 is marked to go in

~source~

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