rghandsfieldmd wrote:
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> Brook Watts' mention of a chainwheel straightening tool in a recent post got me to remembering that I have several chainwheels with excess runout that I need to straighten. How is it done? Any tricks? How do they get bent in the first place? Crashes/torque? Rod Handsfield-Hutchinson, KS.
Well, here goes Rod (I'm sure to get flamed over this one); the "accepted practice" for straightening chainrings is to use a plastic/rubber mallet and whack the chainring in the appropriate spot while it is mounted on the crank mounted to the bike. Vintage steel chainrings always have an excess runout problem. And I have even seen photos of a Campagnolo factory worker straightening the chainring/crank assembly with a mallet!!!
Chuck Schmidt South Pasadena, Southern California http://www.velo-retro.com (Timelines, Reprints and T-shirts)
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