|Campy 10 cassette wear||tarwheel|
Aug 8, 2002 10:49 AM
|I installed a new Campy Chorus 10-speed cassette (13-26) about 2 months ago. It has only about 1200 miles on it but is |
already starting to skip in a couple cogs. A LBS looked at it and said the skipping was from worn cogs, not loose
cables or the derailleurs. I also replaced the chain about the same time, and it appears to be in good shape.
Shouldn't I be getting better wear out of this cassette? My last C-10 cassette lasted 5000 miles before replacing, although it started shifting a little sloppy after about 3500 miles. I keep my chain clean and well lubed. I also ride in a hilly area and do a lot of shifting, so I am not using the same gears all the time. At the cost of new C-10 cassettes ($80 minimum), I am looking for less expensive options than replacing the whole cassette. Is it OK to just replace the cogs that are skipping? It appears to be just the 16-17 or 18-19 combination. I think I can purchase those gear combos for about $30 each.
|re: Campy 10 cassette wear||JohnG|
Aug 8, 2002 1:25 PM
|That "wear" rate seems VERY high to me. Even strong heavy riders I know get WAY more miles from their C10 cassettes than that. What type of chain lube are you using??? Are you riding in very dusty/dirty conditions? How much do you weigh? Are you a pro level rider?? All of these factors could add up to shortened chain/cog life.
FWIW, I use Prolink and get 6K+ miles on the chain (for 1/16" stretch) and ???? miles on the cog sets. I've yet to wear out a cogset but then again I keep swapping parts around I've lost track of how many miles are on my cassettes. Semms as though my "primary" cassettet should have at leat 8K miles on it though.
Branford bike or similar can get you the cog pairs. You might also check velodepot on ebay as his prices are pretty low.
Oh, are you using a C10 chain??? Perhaps I'm getting such good wear from my chain and cassette due to not using a PL or other aftermaket link. ;) Or maybe I'm just not strong? :(
|grind your teeth!||SnowBlind|
Aug 8, 2002 1:51 PM
|No the teeth on the cogs!
Seriously, if you can see the trailing edge "hook", which looks like a shark dorsel fin, you can grind it down a bit to make a more normal tooth look.
You can only do this a few times, but it put my 10s back into perfect running condition.
|"...perfect running condtion..."||JohnG|
Aug 8, 2002 4:30 PM
|Wow, that's a pretty hard core "solution" and one I would reserve for a trashed drivetrain only.
|It was trashed...||SnowBlind|
Aug 8, 2002 8:29 PM
|the teeth had a bad hook, and sounded like it had a handfull of sand in it after I changed chains. Only the 13 and 14 did not need grinding.
The process is described in the Cyclist Handbook and I think I saw it in Zinn as well, but I can't recall. Not very difficult.
It is really a last ditch effort not to spend the dough on a new cassette, and would only work if you had bad teeth.
|re: Campy 10 cassette wear||DINOSAUR|
Aug 8, 2002 5:46 PM
|I have Campy Chorus 10 12-25 on my new bike. 1,600 miles, and I also ride very a lot of hills. No problems with my chain or cassette at this time. Don't know what to tell you, I clean and lube my chain after every ride using a home brew. At $30.00 a cog you might as well just replace the whole cassette. Something isn't right...|
|re: Campy 10 cassette wear||grandemamou|
Aug 8, 2002 6:39 PM
|I started using 10spd last year. I got 5k before changing. No wear problems just wanted a larger cog on the top end. I've got about the same mileage on this one. So, yes I would consider this excessive. FWIW I use Prolink or HGNR and clean everything obsessively.|
Aug 9, 2002 4:25 AM
|I'm currently using a Wipperman 10 nickel chain, which has about 1600 miles on it. I replaced the C-10 chain with the Wipperman at 5100 miles. It was still shifting a little sloppy, so I replaced the cassette at about 5500 miles. My bike now has about 6700 miles on it. I use ProLink lube and have had good success with it in the past. I ride on clean roads and I clean and lube my chain regularly. I think I will try replacing the chain first, to see if that solves the problem, but 1600 miles isn't very good for a chain either. The cassette doesn't look worn, but neither did the one I took off after 5500 miles.|
|Try replacing the chain||grandemamou|
Aug 9, 2002 5:34 AM
|One poster, Doug Sloan, I believe replaced his Wipperman SS at about the same mileage. Funny the nickel one I used was cheaper and got more mileage.|
|Try replacing the chain||JohnG|
Aug 9, 2002 12:32 PM
|Yeah, it sounds like the stretched chain ate the cassette.
IMHO, stick with the C10 chain and you won't have this problem.
|re: Campy 10 cassette wear||thesleeper|
Aug 17, 2002 10:31 PM
|There is something seriously strange going on with your drivetrain. Replacing a cassette after 5000 miles and sloppy shifting after 3.5k? These are bad numbers. Are you changing gears under full load and riding in the rain every day?
By way of example, I took my bike in for a service this week with over 4,000 miles on the clock (Record cassette). The chain was well within limits and the cluster also no probs. The shifting is crisper than when I bought the bike a little under a year ago. The mechanic, who is a highly respected frame builder, reckoned you can get 10,000 kilometres out of a Campag 10 speed chain if you treat it right.
As for the cassette, I would be hoping to get around 20,000 kilometres (what's that, about 12,500 - 13,000 miles) at least out of it.
The only things I obsess over are not riding in the rain (sometimes you get caught) and not changing cogs under full load. But then again, I don't race.
Hope you can solve your expensive problem.