Bent middle chainring tooth
05-28-23, 11:34 AM
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Bent middle chainring tooth
I have noticed a bent over tooth on the middle chainring of my 1999 specialised rockhopper mtb and wondered whether it is supposed to be like this for chain pick up purposes ? Otherwise I will attempt to straighten it as it seems to be causing interference in the lower gears - in the smallest chainring and higher rear sprocket gears a clicking and causing of a jumping sensation whilst peddling . Does anyone have any ideas ? Thanks
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05-28-23, 06:08 PM
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Except I prefer an adjustable wrench if it can fit. Andy
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AndrewRStewart
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05-28-23, 06:14 PM
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IF it's a "shift aid", they'll typically be "several", evenly spaced around the circumference of the ring.
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05-28-23, 06:25 PM
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It would be vanishingly rare for a tooth on a middle chainring to be bent. Teeth on big chainrings often hit things as you ride over obstacles however
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05-28-23, 06:26 PM
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Agreed. I can't count the "broken off teeth tops" I have fixed over the phone with a customer
Andy
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05-29-23, 06:23 AM
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06-02-23, 08:38 AM
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Yeah, it could happen. But that's not a bet the proverbial "smart money" would make.
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06-02-23, 12:48 PM
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Thanks
Thanks for all comments to do with bent tooth on middle chainring. I decided that it had been damaged and bent due to some incident, though we could not remember what it would have been. Took the chainrings apart and hammered the bent tooth flat and the shifting and clicking has been resolved- hoorah ! Must have been a freak accident. Just goes to show that sometimes the unlikely event can be the cause of a problem even though our rational minds are telling us otherwise.
06-03-23, 06:56 AM
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I've bent all sorts of chainring teeth when the chain gets hung up shifting under power.
Just bend them back, replace the rings when they wear.
Just bend them back, replace the rings when they wear.
