imperfection is perfection e-RICHIE in chester
On Wed, 19 Dec 2001 08:35:46 -0800 "feldman" <firstname.lastname@example.org>
> I'd find it interesting to take a measurement survey across a variety
> frames, vintage and modern and all materials.
> The errors measurable might be surprising.
> David Feldman
> Vancouver WA
> ----- Original Message -----
> From: "Jon M. Schaer" <email@example.com>
> To: "garth libre" <firstname.lastname@example.org>;
> Sent: Tuesday, December 18, 2001 10:09 PM
> Subject: Re: [CR]Frame Alignment Obsession?
> > ----- Original Message -----
> > >>>
> > When I got home and put the wheel on frame it still was a shade
> off from
> > having the rear wheel centered under the brake bolt of the bridge.
> It is a
> > shade over 1 mm off. Others can not see it, as 1 mm is such a
> > difference. Finally I just took a ruler and measured the distance
> from the
> > center of the braze on bolt holder to the inside face of the seat
> > there was the 1 mm difference.
> > >>>
> > By that description it sure sounds like the bridge is off. It is
> > that, though the hole is not centered between the seat stays, that
> it is
> > the center plane of the frame. But in this case, the wheel would
> > look correct at the hole, but closer to one seat stay. This
> > be checked on a frame table, or with a surface gauge and some
> > indicators, off of the BB shell faces.
> > Either way, I honestly would not hassle over a 1mm vertical lean
> error. I
> > would use no-hands riding as the guidepost. You can detect pretty
> > errors, but it depends on where the error is, and rear wheel lean
> > stand out much. I've seen more error than that on many big-name
> > forks, and the owners couldn't even tell.
> > Jon Schaer
> > Columbus, OH
> > _______________________________________________
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