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#11
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what happens when the chain says bang in a hill?
On 3/15/2015 10:26 PM, Emanuel Berg wrote:
Frank Krygowski writes: Lou's right, of course. And if you install a new rear sprocket and new chain, the problem will go away. Really? This happens only in stiff hills but yes, it would be nice to be able to apply all power I can muster with no worries whatsoever neither the rear wheel will be disaligned against the frame nor the scary bam-bam chain manners. Can I somehow confirm the rear sprocket and/or chain are defect? Besides climbing a hill, I mean. Yes. It's easy to measure chain wear; and if your chain is worn too much, your sprocket will also be worn too much. See http://sheldonbrown.com/chains.html#stretch Read the section "Chain and Sprocket Wear" then pay special attention to the portion toward the bottom beginning with "Measuring Chain Wear." -- - Frank Krygowski |
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#12
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what happens when the chain says bang in a hill?
On 3/15/2015 10:21 PM, Emanuel Berg wrote:
Lou Holtman writes: The chain wear doesn't match the wear of the cogs used during climbing. That explains the stubbornness and then sudden bang jump but how is it that the chain wear is higher relative cog ditto during *climbing*? I understand why climbing requires more power in general but how come this isn't evenly distributed so that the only thing to it was more power from the human riding the bike? It's explained, at least generally, in the "Skipping Chain" section at http://sheldonbrown.com/brandt/chain-care.html If you need more detail, we can give it here. But it's more practical to just fix it and be done. -- - Frank Krygowski |
#13
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what happens when the chain says bang in a hill?
On 2015-03-16, Emanuel Berg wrote:
Really? This happens only in stiff hills but yes, it would be nice to be able to apply all power I can muster with no worries whatsoever neither the rear wheel will be disaligned against the frame nor the scary bam-bam chain manners. Yes, you _should_ be able to apply all the power you can muster. - If doing so causes your chain to skip _without_ the wheel slipping out of place, follow Lou's advice and get a new chain and cog. - If doing so causes your wheel to slip out of its proper place in the dropouts, then your axle nuts are not tight enough, or not evenly tensioned. Tighten them evenly. You may have to clean up the dropouts to remove caked-on dirt, grease, or anything keeping the knurled ridges on the nuts from clamping fully. Note that those are two separate problems. As you've described the problem, it might be that your power pulls the wheel out of line, at which point the spacing on the chain changes and, as a result of the wheel movement, your chain skips. So first make sure the wheel won't move out of place, and then evaluate your chain. -- Gregory S. Sutter Mostly Harmless http://zer0.org/~gsutter/ |
#14
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what happens when the chain says bang in a hill?
Yes, you _should_ be able to apply all the power you can muster. ...... IF WE POLL RBT...how many bikes take full power from vey low speeds ? my bikes do not. |
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