I used to use the mallet method to align the spider on Campy or the like but both Var. and Bicycle Research both made tools that localized the bending very well just on the rings. Steven Willis 1778 East Second Street Scotch Plains NJ 07076 908-322-3330 http://www.thebikestand.com
> rghandsfieldmd wrote:
> >
> > 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)
>
> .