If we are talking about using a cotterless BB axle with the cups from a cot tered BB, Sutherlands says that usually doesn't work well as the bearing ra ce on a cotterless axle is usually a significantly larger diameter, and doe sn't match up well with cottered BB cups.
Regards,
Jerry Moos
Big Spring, Texas, USA
From: Fred Rednor <fred_rednor@yahoo.com> Subject: Re: [CR]cottered crank removal? To: classicrendezvous@bikelist.org, VN80PL8@aol.com Date: Thursday, October 2, 2008, 10:21 PM
> There is probably an old old discussion somewhere about > this. How do you > remove those stubborn cotter pins? In my lifetime I have > only removed one set > successfully without drilling or cutting through the BB > axle. > > Furthermore, since this is a french bike, is it only the > cup threads that > differ, i.e., can I fit a square taper in those cups?
Keith,
To answer your first question, please take a look at this article:
http://www.sheldonbrown.com/
To answer your second question: you can use a square taper axle, but you wi
ll
need to be aware of whether you need one meant for thick-wall or thin-wall
cups.
If you don't know which is which by simply examining the cups, you will
have to measure your current spindle - from one "bearing sholder" to
the other. A distance of about 50mm means you have thick-wall cups, and a
distance of about 55mm means thin-wall. Some French cups are sort of in-be
tween
the two, but you can play around with spacers and so forth...
Good luck,
Fred Rednor - Arlington, Virginia (USA)