Originally Posted by
nicoth
Hello. My freewheel stopped working. I can no longer coast. All the freewheel replacements I've seen come with cogs. Can I replace just the freewheel part and transfer my existing cogs, or do they only sell freewheels and gears together? Thanks.
Yes, but you probably don't want to. As Jive said, do you really have a freewheel, or is it a cassette type hub? The kind of bike and/or any information about the rear hub helps enormously. Read on:
http://sheldonbrown.com/free-k7.html
If you do have a freewheel, it's possible that it's gotten old and gummed up. Removing, soaking in solvent, then re-oiling the bearings can restore it to usefulness.
If it has gone bad, separate freewheel bodies are sometimes available, but it's usually more cost-effective to replace the whole freewheel as one unit. Removing the cogs and transplanting them to a new body was common 30 years ago, but not anymore.