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@elwigleeno
Hi,
Not sure if anyone will be able to help but bought a bike off here and have been finding that on longer rides the right hand crank works itself loose from the BB - only gradually, say over 3-5 miles or so, but eventually it's completely loose. To date I've been tightening it up after each ride but obviously this isn't the best way to go about things. I guess that the crank arm is slightly bent, meaning that in pedalling I'm forcing it off the BB, but would appreciate any thoughts...
Thanks for looking.