Questions tagged [innertube]

A rubber torus shaped balloon which is inflated via a valve inside a tyre to keep it rigid.

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Shimano Roller Brake Model BR-IM31 (specifically!!)

New to the world of roller brakes (new cargo bike) and need to change back inner tube due to flat. I'm trying to work out how to remove the back wheel and have unclipped the gear cable (nexus hub) but ...
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Motobecane 1970's version

I have a 1970's Motobecane bicycle with 27x1 tires. I need new tires and tubes. What would be the best size to fit, as I cannot find an exact match?