Bicycle Mechanics - Bad freewheel ?
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04-12-12, 06:09 PM
I'll do my best to try and put into words the trouble I'm having - I'm getting a "clunking" type noise that I suspect might be coming from the freewheel on my Schwinn Madison single speed. I can get the sound to go away with a quick back pedal for a rev or two. Then it comes back again if I coast or back pedal again. Then, the cycle repeats as stated.
The best way I can desribe the sound is a repeated clunk. Could this be the freewheel? Something else? The bike is new and has been doing this since day one. I suspect from the price of the bike that the freewheel is not the highest grade... Thanks.
04-12-12, 06:16 PM
This is a single speed, right? i'd say it's an alignment issue.
Search the forum. There are plenty of posts about this sort of thing. I had the same issue with a Shimano SS freewheel and resigned myself to the clunking. It's related to the bearing slop tolerance. You could try to disassemble and take out a shim, but I found that this made the bearings too tight. The clunking doesn't seem to affect its function though. The White Industries freewheels are built to better tolerance and do not clunk.
04-12-12, 06:39 PM
+1, toss it and get a new one and a new chain too..
White has Trials &Polo freewheels too,
more pawls so it engages in about 5 couple degrees.
04-12-12, 07:13 PM
often after backpedaling a freewheel will use a different pawl/tooth combination when reengaged. a noise, most likely from poorly aligned pawls and teeth in the freewheel, will create this rhythmic noise. coasting will temporarily stop the noise if a "good" combo results. it's hit or miss.
fix is to buy a different freewheel. i have recently been purchasing what i think is a nice compromise between, price, availability, and quality. it's the ACS Crossfire model.
04-12-12, 08:18 PM
Thanks for the replies everyone. I had already purchased an ACS Crossfire in a different tooth count as I was planning on changing gearing anyways. I just haven't gotten around to having it installed by my LBS as I wanted to see if the noise was possibly from this or something different. I'll get it swapped out this weekend. Thanks again.
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