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1

I wouldn't expect to throw the chain inwards or outwards (at least on my 3x8 setup) if the limit screws are correct. This is true whatever sprocket I'm using and even if I push the lever the wrong way (it's not unknown when I'm tired especially if I've recently been riding another bike). That said you shouldn't be shifting like that as you acknowledge. ...


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The chain will typically slip under the following conditions: 1. the chain is worn out (this can be measured with a cheap tool, or by your LBS). 2. the cassette is worn out 3. one or more of the chainrings (the cogs on the crankset) is worn out 4. the chain and/or cassette/cogs/pulley wheel are dirty and full of oil/road-grit/gunk. These can occur ...


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Assuming that the cabling is clean, that the derailleur is nicely indexed and well alligned, the derailleur hanger not bent, and the chain correctly moves lateraly +/- 4mm for each gear up or down, then I would have a look at the distance between the upper jockey pulley and the sprockets. The distance should be on all sprockets less than 25 mm and more than ...



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