Stevie wrote:
> I’ve got a nice old Centurion Pro Tour frame with cantis braze ons.
> Seems the fork is narrower than newer forks equipped for cantis. As a
> result I can’t seem to fit Tektro Oryx brakes. Is there a new
> cantilever brake that is better suited or do I need to scrounge up and
> old vintage pair?
Cantilevers and "V" are pretty much all of a group for geometry[1].
Frame and fork makers position brake studs both for rim diameter and for
width. It may be that the designer intended a skinnier rim than yours.
Modern touring bikes are about 80mm apart, some cross bikes smaller
around 75mm. A 1978 vintage tandem here today is set at 66mm (presumably
for a 19mm wide Araya 20A or some such). See what the distance is first.
Some vintage designs used a smallish pad and modern ones on the same
mounts may hit the fork blade on release, occluding the area for wheel
changes. You can snip off the back end of a brake pad for clearance with
no ill effects [2].
Lastly, Oryx uses a threaded not a smooth post. Make sure you have the
smaller pair of spacers on the inside or, if there still isn't room,
move all the spacers to the outside. You'll lose the shoe angle
adjustment but you'll have more space. Do oil the brake shoe nut threads.
[1] Yes, some models, as DC 960, were diminutive but if that was the
original brake you can usually work around the narrow stud position.
[2] Braking is all about swept area, not pad size.
p.s. Where's Tom Sherman, Mr Footnote ?
--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971
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http://www.teranews.com **
