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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 05-04-06, 12:29 PM   #1
thebiggreenie
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Pedalling problem

Hi guys,

I didn't know where to post this, so I put it here. When I 'stand-up' to pedal, and obviously put more force into pedalling, my bike seems to skip up through gears. Anyone know how I can fix this? Sorry if I'm being too vague in my post.

- Ralph
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Old 05-04-06, 12:31 PM   #2
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It could be many things. Check you rear der. adjustment. It could also be frame flex pulling the cable under the BB shell. Lube the little channel it runs through.
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Old 05-04-06, 12:34 PM   #3
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Worn chain?
Cross chaining?
RD needs cleaned and lubed?
Sorry if I'm being too vague.....

Enjoy
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Old 05-04-06, 12:37 PM   #4
thebiggreenie
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Sorry, I'm a bit of a noob... RD?
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Old 05-04-06, 12:40 PM   #5
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If you have friction shifters, the friction adjustment may be too loose.
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Old 05-04-06, 12:53 PM   #6
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Quote:
Originally Posted by thebiggreenie
Sorry, I'm a bit of a noob... RD?
RD = Rear Derailer
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Old 05-04-06, 02:58 PM   #7
Al1943
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If it is trying to change gears when you apply pressure it may be a simple shift cable adjustment. If it shifts to a smaller cog try adding tension to the cable with the barrel adjustor, 1/2 turn at a time, counter-clockwise.

Al
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Old 05-04-06, 03:06 PM   #8
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Could be worn chain, or new chain on worn rear sprockets. I had that problem and had to replace my cassette and chain.
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Old 05-08-06, 03:20 AM   #9
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Take a look at this article in Sheldon Brown's site: http://sheldonbrown.com/derailer-adj....html#skipping
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