Mountain Bike Reviews Forum banner

1 - 8 of 8 Posts

·
Registered
Joined
·
13 Posts
Discussion Starter · #1 ·
A newby question, but I guess thats what this forum is for right? I have been racing by XTC 29er for 2 seasons now and have about 1500 Cross Country miles on it. I haven't had any chain issues but I can see it coming. How do you know when it is time to replace? Lately I am having a hard time getting my rear derailiar dialed in, and I am wondering if it is because my chain is "bending" too much and not being forced from one cog to the next as well as it should be??

Any advice?
Thanks
 

·
Registered
Joined
·
1,808 Posts
Chain Maintenance with Sheldon.

12 link pairs. measure. a new chain will be 12 inches
more than 12 and 1/8 inch new chain and cassette.
12 and 1/16 inch new chain.
 

·
Registered
Joined
·
1,808 Posts
A ruler is better than most "chain wear guides" they tend to give a false reading ie too worn.

Otherwise count out 50 pairs (100 links) which should be 50 inches. If your chain is half a pair (1 link) longer than it is 1% worn (0.5 of an inch over 50 inches). You can do this by placing your worn chain next to your new chain.
 

·
Registered
Joined
·
34 Posts
mitzikatzi said:
A ruler is better than most "chain wear guides" they tend to give a false reading ie too worn.

Otherwise count out 50 pairs (100 links) which should be 50 inches. If your chain is half a pair (1 link) longer than it is 1% worn (0.5 of an inch over 50 inches). You can do this by placing your worn chain next to your new chain.
One of my chains that had seen over 10,000miles since 2003 (before I realized the importance of changing chains sooner) Still only managed 1.0 on the CC3 tool. I may aswell keep running with that one, since everything else is probably too worn now.

My other bike that had seen far less mileage had a .75 on the CC-3. I replaced it with a brand new chain and everything is working perfect.

Just my experiences. The CC-3 is only $8, and it's quick and easy. No room for error.
 

·
Enthusiast
Joined
·
5,359 Posts
kettlebiker said:
A newby question, but I guess thats what this forum is for right
Absolutely. And nothing is more stimulating than a good question about chains. Be sure to ask about lube sometime. ;)

You can buy chain-wear gauges. There are some issues with using such gauges, and sometimes they indicate wear on a brand new chain. The uber-reliable method is actually the one put forth by mitzikatzi. Sometimes I'll use a gauge for a quick sanity-check, but I also try to make time to measure with a ruler a few times during the season, as mitzikatzi describes.

If you use the ruler method, it helps to close your chain using something like a SRAM Powerlink. That way, you can take the chain off easily to measure it.

Edit: I was just being a bit humorous above in my comment about lube. Please don't take it the wrong way. Chain maintenance is important. Hence it tends to be frequently discussed.
 
1 - 8 of 8 Posts
Top