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D/A Chain and Cassette wear(5 posts)

D/A Chain and Cassette wearWiseGuy
Aug 8, 2002 4:05 AM
I have about 2500 miles on my PC99 chain and DA cassette. The chain is begining to strech and the LBS told me the chain, cassette and chain rings must all be changed out. I keep the bike in excellent condition and the drivetrain well lubed. With my old Ultegra 600 group, I used to get about 2500 miles on a chain and only needed to change cassettes every third chain. My questions are:

1) Do chain rings normally need to be changed out at 2500 miles?

2) Do chain and cassette need to be changed at the same time?

3) If I change the chain only, will it "run in" on the existing cassette....if so, will the new chain wear out much more quickly?

4) If I switch from my PC99 chain to the DA chain, will they wear on the drive train differently?

Sorry for all the questions on what might be a simple subject. This DA stuff is sure expensive!

Thanks in advance!!
re: D/A Chain and Cassette wearnetso
Aug 8, 2002 4:17 AM
My Chain (DA) was stretched after 2000 miles. Replaced it with a Whipperman chain and DA cassette to prevent possible skipping.
re: D/A Chain and Cassette wearJuanmoretime
Aug 8, 2002 5:02 AM
I don't buy what your LBS is telling you. I agree it's time to change the chain but I usually go thru 3 or 4 chains before I need to replace the cassette. Plus I usually go thru 2 or 3 cassette's before the rings need replacing. The cassettes I average about 6,000 miles out of and about 20,000 on rings. I do ride Dura Ace 7700. Do yourself a favor, buy a Park Chain checker and see how worn chain really is. The directions that come with the chain checker will tell you everything you need to know about chain wear and replacement. Also check out Parks website, www.parktool.com. LoL.
re: D/A Chain and Cassette wearcurlybike
Aug 8, 2002 7:56 AM
You really do not need to purchase a chain check tool if you have a metal tape measure over 13". With the chain on the big ring and a small cog, clean off a link real close to the bottom of the big ring. Place the 1" mark of the tape on an edge of one of the pins in that link. Align the tape down the length of the chain toward the Der.. When you get to the 13" mark on the tape, see where the similar edge of the pin in that link falls. If it is around 13 1/16 than the chain needs replacement and the cassette may need replacement or not. If it is 13 1/8, than the cassette is very likely dead, if you continue to use that chain, it will work, but will clap out the rings on the crank.
Your results may vary.
re: D/A Chain and Cassette wearweiwentg
Aug 8, 2002 4:51 PM
1) if you weigh 500 lbs and have the strength of a gorilla, then yes, you need to change the chainrings as well.
for heaven's sake, tell the person who told you this to get his head out of his butt.

2) not necessarily. if a new chain doesn't skip on the cassette, then there's probably no need to change the cassette. if you change the chain before it's severely worn your cassette should remain undamaged.

3,4) not sure.