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Observation on Paris-Roubaix(6 posts)

Observation on Paris-Roubaixonespeed
Apr 14, 2003 5:59 AM
Why is it that whenever I have to change my freewheel the mechanics at the shop tell me I need to change the chain as well? Watching the race on Sunday I noticed numerous circumstances where the wheel was changed without messing with the chain. I know that I have had a new freewheel put on and had the chain skip after the switch forcing me to replace the chain, so why dont the pros run into this problem?
re: Observation on Paris-Roubaixmosovich
Apr 14, 2003 6:12 AM
I think it's because they get new set up's all the time. I would think that they go into a race like Roubaix with new chains, so therefore the chain is not set into a pattern.
simpletriple shot espresso
Apr 14, 2003 6:13 AM
When you put a couple of thousand miles on a chain and freewheel they wear together. When you throw on a new chain or freewheel the chain isn't stretched and the freewheel isn't worn so it skips or doesn't work right. Everything the pros use is new. New chains and freewheels.
Been trying to figure this out for years...biknben
Apr 14, 2003 7:33 AM
I always used to keep a chain and cassette until the shifting got bad. I'd replace just the cassette and it would be worse. Then I'd replace the chain too. Finally everything would be back to normal.

I trying desperately to break myself of the "If it ain't broke, don't fix it" attitude. I have new chains and cassettes on all my rides. They cost me a small fortune. DA and, especially, XTR cassettes aren't cheap. I'll be testing the theory that is I replace my chain more often I should NOT have to replace my cassette.

If this doesn't work I'm going to just throw my arms up and ride my fixed gear more often. A single cog is much cheaper to replace than an entire cassette.
Alternating chains?Stampertje
Apr 14, 2003 11:39 AM
A friend of mine uses two chains and switches them every 500 miles or so. The theory is that you wear in two (cheap) chains on one (expensive) cassette and significantly extend the lifetime of the cassette - because the chains stay better longer they don't wear the cassette as much. I just can't bring myself to be that organized, though. Has anybody else tried this?
re: Observation on Paris-Roubaixrussw19
Apr 14, 2003 7:39 PM
All their stuff's new. And when they are changing a wheel in a race it's due to a flat, not because they wore out the cogs over the pave'. Also, if you change your chain often enough, you won't have to replace your cassette. But you should really take a look at the math first... if you are worried about killing a $200 Record Ti cassette, swap your chain often. If you run a $30 HG-40 cassette, why replace a $20 chain every 3000 miles to save that cassette? Some people just don't think to look at the whole picture sometimes, so they put a new cassette on with every chain. Also if you ride in the same gear most of the time you may be able to just replace one cog instead of the whole thing if it's not pinned.

But your question would be like saying the shop has you replace your cassette every time you flat or have to true a wheel... but if your stuff is new, you won't have a worn chain or cogs... and making sure of that is why the pro's mechanics get paid.