|New chain skips - do I need a new cassette now too?||TomS|
Jun 6, 2002 5:42 AM
|I have a univega road bike with campy daytona 9-speed components; it's about 2 years old with around 3500-4000 miles on it. I just replaced the chain with an SRAM 9-speed chain, and it skips alot when I put more than just a little pressure on the pedals. (more than light spinning) It seems to happen more on some cogs than others, so I'm guessing I need a new cassette...
But I thought that cassettes were supposed to last longer than that? I kept the old chain fairly clean and well lubed; and I know my mileage is pretty low compared to some peoples'. Also it shifts fine in the stand, and if I don't pedal very hard.
New cassette time? Any pointers on places with good prices on campy 9-speed cassettes? I've looked around online and most places seem to only have 10 speed now :(
|you waited too long to change the chain (nm)||ColnagoFE|
Jun 6, 2002 6:56 AM
|Not onlu that...||Spoke Wrench|
Jun 6, 2002 7:07 AM
|but you need to do it pronto! Every mile that you ride, your new chain is wearing in to match your old, worn cassette cogs. Wait too long and your new chain will skip on the new cassette too. Then you'll have to buy another new chain.|
|what kind of cassette should I replace with?||TomS|
Jun 6, 2002 7:17 AM
|That's what I was afraid of... I only tried to ride it once, and turned around after the first couple of miles when it was obvious that things weren't working right. So hopefully the new chain is still ok.
Any recommendations on cassettes? Is the campy chorus 9-speed steel mk-2 cassette ok with daytona? (http://www.branfordbike.com/cassette/cog2.html#item3) I didn't see any 9-speed cassettes labeled "daytona". I don't race so I don't really care about any ti weight savings.
Also if I change my chain more often - every 1000 miles? 2000? - how long should the cassette cogs last? I wasn't having any problems with my old chain/cassette, but I measured the chain with a ruler and it was close to the 12 1/8" length, so I figured it had stretched.
|what kind of cassette should I replace with?||Dirk Lenart|
Jun 6, 2002 7:33 AM
|It's safer to use the 12 1/16" rule of thumb.
Even lubed and cleaned well, you'll find that 1000 - 1500 miles will be the lifetime of your chain, if you want to safe your cassette.
About cleaning a chain. This means for me taking the chain from the bike (so chains with links like SRAM or Wippermann are a must) and putting it in a jar with paraffin oil or kerosine. Afte a little soak and shake around time, it will get a second bath in clean paraffin oil. After that wipe clean, let dry for 24 hours or put them the oven for half an hour to get rid of the solvent.) Back to bike, one drop of oil left and right of eacht link, where the outer and inner plates meet. Backpedaling for half a minute. Finished!)
I use Dura Ace cassettes and definitely do not want to wear that expensive piece of metal out. So, my chains go first. You don't need to buy the most expensive chains, as most of them wil not offer better quality.
Cassettes may last in this way a lot of chains.
Anyway, riding with a new chain gives a great feeling on the bike. It just feels better when pedaling those miles.
|sometimes it just happens...||ColnagoFE|
Jun 6, 2002 9:17 AM
|be glad you don't have to buy a 10 speed cassette...much more $. That's why I change mine every 3500-4000 miles whether it shows full wear or not.|
|re: site for blowout on cassettes.||pa rider|
Jun 6, 2002 7:38 AM
|I found one site that has chorus for $54 and veloce for $32 9 speed cassette.
The site name is:
Hope this helps for you.
|re: New chain skips - do I need a new cassette now too?||JimP|
Jun 6, 2002 11:58 AM
|The "stretch" of the chain is really wear between the pin and the roller caused by dirt wearing on the metal surfaces. There are many theories about cleaning the chain but the reality is that you do have to pick one of them and do it regularly. One of the theories discussed above works for some, others feel that the "cleaner box" technique moves the links as they go through the solvent so that helps flush out the dirt. The bottom line is you need to the the dirt out of where you can't get with a rag or brush and then fill the airspace inside with something that will lubricate and not attract dirt.|
|Sheldon Brown says...||DougSloan|
Jun 6, 2002 1:41 PM