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Chainrings Wearing Too Fast(4 posts)

Chainrings Wearing Too FastFez
Apr 2, 2003 7:12 PM
I've read all the posts about chain, cassette and chainring wear. Many people think the more frequent you change the chain, the less frequently you replace cassettes and chainrings.

I clean and monitor my drivetrain frequently. Virtually no chain wear (checked w/ Park tool) and virtually no cassette wear in 3,000 plus miles.

My problem is I notice a fair amount of chainring wear, especially on the big 53 ring. I probably spend less time on it than the 39 ring, so I'm guessing all the wear must occur on the actual shift up.

Anyone here have a solution for keeping those chainrings fresh? I thought these were the most durable part of the drivetrain.
What chainrings ? Shimano or Campy?Juanmoretime
Apr 3, 2003 2:02 AM
I just went to Campy so I can't say what type of life you should be getting. Dura Ace 9 speed, chains abour 2500 miles, about 6000 on a cassette and 15,000 miles on the rings. Do you frequently ride in the rain?
What chainrings ? Shimano or Campy?Fez
Apr 3, 2003 7:39 AM
Shimano Ultegra 9speed chainrings on both bikes.

Bike #1 3,500+ miles:

No measurable chain wear, no visual cassette wear, small chainring OK, big chainring starting to have burrs.

Bike #2 1,000+ miles:

No measurable or visual wear anywhere EXCEPT for the big chainring, which looks like the burrs are starting to form.

I ride in the dry mostly and keep everything clean. I look like I am doing fine on the chain and cassette. If I extrapolate the wear, I estimate I won't even make it to 5,000 miles on the big ring.

I do tend to shift in and out of the big ring due to the terrain I ride and due to my desire to ride in the middle of the chainline and not in the extremes. Is the shift up to the big ring that abrasive?
Seeing what you believeKerry
Apr 6, 2003 2:32 PM
Chainring wear is determined by how many links of a new chain can be lifted off the chainring. I'd be VERY surprised if you're really getting any significant wear. I suspect you're interpreting cosmetic wear as being actual grinding away of the metal.