> At 2/25/2008 07:02 PM +0000, gpvb1@comcast.net wrote:
> >Mark:
> >Are you saying that a current-production JIS Phil Wood BB won't work
> >with any vintage Campagnolo crank, for example? I don't 'get' it.
> >Greg Parker
>
> I'm not saying it can't be done, but it won't be an optimum fit.
> (Unless the cranks have been installed and removed so many times
> they've been coined to a new size. Or if the spindle has been
> machined undersized.)
>
> Whether they are ISO or not, old Campi tapers are smaller than
> JIS. Every old Campi spindle I checked went too far into every JIS
> crank I tried. Every JIS spindle I checked only went part way into
> every old Campi crank I tried. Close enough? Maybe, but they aren't
> making any more of those old cranks. I'd rather use the right
> spindle than take a chance.
>
> http://www.sheldonbrown.com/
>
> BTW one negative with square tapered cranks is inconsistent chain
> line from unit to unit of the same model. More of a problem with
> cheap cranks than good ones. However there is more variation in
> taper size with spindles where the flats are machined than with cheap
> spindles where the flats are forged.
>
> Mark Stonich;
> BikeSmith Design & Fabrication
> 5349 Elliot Ave S. - Minneapolis. MN 55417
> Ph. (612) 824-2372 http://bikesmithdesign.com
> http://mnhpva.org
>
OK. I think I misunderstood your initial post. My apologies!
Greg Parker
snowy Ann of Arbor, Michigan