Joined: Feb 2012
Posts: 19,344
Likes: 5,462
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
For a different possibility... We've seen/heard a chirping from hub axle seals. Some hubs (mostly moderate cost ones) have a slip on "rubber" seal on the LH side of the hub. These seals can rub on the hub shell just so and emit a faint noise, more easily heard when pedaling as the ratchet sounds can overwhelm the seal chirp. A small drop of oil between the seal and hub shell fixes this. Andy.
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AndrewRStewart