marcus.e.helman@gm.com wrote:
> I know it is common wisdom that clamping a wheel into a frame with a QR
> affects the adjustment of the bearings, causing them to move inward, and
> perhaps bind. Is there any proof of this? I find it kind of hard to
> believe.
It's very easy to prove. Simply take a hub with a threaded axle and clamp it in your frame. The hub won't turn freely if it has been adjusted for no play when off the bike.
Is the idea that the axle compresses?
That or it bows slightly.
I would have thought that
> a relatively short piece of steel would not respond to force this way. If
> it is not axle compression, what accounts for this supposed phenomenon?
It is axle compression, so there's no need for any other accounting.
>
> If axles are in fact this flexible, wouldn't we observe the opposite effect
> with bolt-on wheels?
No.
It seems to me that tightening the nuts on bolt-on
> wheels would essentially be stretching the axle.
Only between the cone's lock nut and the axle nut. Not between the bearing cones.
I have never heard that
> track axles should be adjusted to bind just a bit because tightening the
> nuts would cause the wheel to loosen up.
No, I wouldn't think you would have heard that. ;-)
--
Peter Jon White
Peter White Cycles
24 Hall Rd.
Hillsborough, NH 03244
603 478 0900 Phone
603 478 0902 Phax
http://www.PeterWhiteCycles.com