Chainring Wear
Comments
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I am sure much more knowledgeable people than I, will be along shortly to advise, but personally in many years of cycling I have never know a front chain ring to be the cause of slip, its normally one at the back.
Are you sure its the front and what troubleshooting steps did you take that lead you to this conclusion ?Regards
Alan0 -
On more than one occasion I have read about chain slip on chainrings, so it can happen. Usually after chain and cassette have been replaced, it's become clear the chainrings are the culprit, and replacing them eliminates the skipping under load.
To me the teeth at the sides of the photo look more worn than those top and bottom which would make sense in terms of where in the rotation the maximum torque is applied, so it could be causing the chain to skip on the small ring. Is this happening with a new chain?0 -
Many thanks for your replies.
Well, under load on steep ascents, the chain is slipping clean off of the small ring and sometimes coming straight off. The front mech is adjusted fine, which leads me to believe that the chain just isn't sitting correctly on that chainring. And yeah, it does appear that the teeth are worn in that one spot... The chain and cassette are relatively new-ish and have worn together for just under a year, but the slipping has only very recently started occurring which is most puzzling! In the big ring, there is no slip whatsoever in any gear and under any degree of torque.0 -
I'd say you need a new chainring judging by the profile of the teeth at the 2 O' Clock position.0
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YES, look at the 'shark tooth' wear at the 2 & 8 o'clock positions.
Replace the small ring, and avoid a painful injury due to chain slip....
NO STANDING using that worn inner ring!
Jay Kosta
Endwell NY USA0
