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It is possible that you have damaged something but the most likely is that things need lube and are out of adjustment. Check that the rear derailleur is vertical - if not go to a bike shop for help. There are two screws (usually crosshead on the rear derailleur) that prevent the rear derailleur going beyond the ends of the cassette. The one that is for the ...


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You probably have a bent derailleur if the bike has been banged around and its not shifting right. You'll need to go to a bike shop so they can un-bend it, and then redo the derailleur adjustments and possibly cable tension. The bent derailleur will prevent the adjustments from taking place properly, so if you try them, you may find that its unadjustable. ...


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Good answers above. Most likely a worn sprocket, but could also be that your B-tension on the rear deraileur is insufficient, causing the chain to not wrap as far around the cassette cogs as it should, which would make the problem worse. Increasing B-tension will cause the deraileur's guide pulley to come closer to the cassette, thereby engaging more chain ...


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This does not answer your question, but it's too long for comments. Summary: take it to another bike shop. Details This is an internally geared hub (IGH). I cannot tell what make it is; the ones I know of are Sturmey Archer, Shimano Nexus and Alfine, and SRAM. The whole bike has been left to molder - the chain has rust, and the tires are flat. The chain ...


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Pedaling while stand up is not something you should or should not do. It is harder for your body because it increases heart rate, but gives you instant power and is even necessary for some obstacles of technical climbs on MTB. Sometimes you need to go over that rock, sometimes you don't have the time to shift and just want to accelerate right away. Every ...



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