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cassette spins freely (without the wheel!)(7 posts)

cassette spins freely (without the wheel!)farrell
Jan 17, 2003 10:10 AM
Why is my cassette spinning as I pedal, but my wheel isn't? Sometimes it engages, and other times no (usually it doesn't work right when I actually need it to, funny how that works).
Can I fix the cassette, or does it require a new one? Thanks for the advice.
Jan 17, 2003 10:16 AM
Assuming this is a modern bike, the part you need replaced is called the freehub body. 30 or 40 bucks, plus labor. (Rule of thumb - If you don't know what its called don't try to fix it yourself.)
re: cassette spins freely (without the wheel!)Tarball
Jan 17, 2003 10:17 AM
Your problem isn't your cassette. It's your freehub. The pawls inside your freehub (the things that make the clicking when you coast) are either damaged or have faulty springs.
Most manufacturers make replacement freehubs for their hubs.
Unless your're comfortable with axle removal, I'd reccommend taking it to your local shop. They may try to sell you a whole new wheel, but you most likely don't need to.
your freehub pawls are sticking or toasted.jw25
Jan 17, 2003 10:19 AM
Depending on who makes the hub, your options are limited. Shimano hubs use one-piece freehubs (well, they can be opened and serviced, but it's a specialized shop operation). You can try flushing it out and relubing using a freehub buddy, but the pawls may have rounded out, in which case you need a new freehub. The bad thing is, the freehubs alone cost close to what the entire rear hub goes for, so it may be cheaper to replace the whole hub.
The only other hubs I'm familiar with are American Classic and Mavic. AC use a different locking system, which is easy to access. You need to use thin grease, though, or they can stick fairly easily. Check for the grease, and for instructions.
Mavic hubs depend, but the ones I've opened are fairly straightforward. You want to use a thick oil on the pawls, as greases tend to be too sticky for optimal functioning.
re: cassette spins freely (without the wheel!)emptyhanded
Jan 17, 2003 11:47 AM
i would definitely take it to lbs to get repaired properly. this isn't something you want to give out when you're mashing the pedals (think tyler hamilton's wreck in the giro d'italia).
Your Luckyflying
Jan 17, 2003 1:10 PM
Consider yourself lucky
I just got done fixing my riding partners freehub.
His had come slightly loose & broke the ring/spring that holds the three pawls in. They locked open & did the opposite of yours. Meaning he instantly had a fixed gear bike with no free wheeling action. Thanks God it broke on a slow climb. Imagine if it had broke on a 50mph downhill?
Suddenly your pedals are doing

Anyway yours seems to have the pawls stuck down. Did you happen to just grease the hub or have it greased? This is why most don't grease it.
Thanks for the advicefarrell
Jan 17, 2003 1:35 PM
Thanks for the advice. I'm glad you corrected me about the terminology for the free-hub and cassette. I'll get to work on fixing it now.