Bike Forums - View Single Post - Chain falls off when rolling backwards
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Old 12-05-19, 09:32 AM
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Andrew R Stewart 
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The mentioned devices are meant to retain the chain during shifting when pedaling forward, not back pedaling. The little tabs/blocks reside on the upper half of the chainrings and back pedaling drop off starts at the ring's bottom half. But Dave does make a good point about the cog/ring combo employed when drop off happens. One more reason why riding in cross over combos is to be avoided. Andy
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