In the 70's and 80's Zeus also used 16mm head crank bolts, and since they also used Campy compatible extractor thread, rather than the larger diameter Stronglight extractor thread, the bolts really were a tight fit. Stronglight crank bolt sockets (which used to be really cheap in the 70's) would work with Zeus cranks, but many of the other 16mm sockets that would work with Stronglight cranks had too thick a wall for Zeus cranks. If someone has put 16mm bolts in a Campy crank, this would be exactly equivalent to the old Zeus setup.
Regards,
Jerry Moos
Houston, TX
> The crank puller thread diameter shouldn't be variable, and the peanut
> butter wrench wall thick ness should not be a problem.
>
> Did someone put 16mm head Stronglight crank bolts in that thing?
>
> Ed Braley
> Falmouth, Maine
>
>
> ----- Original Message -----
> From: "Bingham, Wayne R." <WBINGHAM@imf.org>
> To: <Classicrendezvous@bikelist.org>
> Sent: Wednesday, February 27, 2002 7:35 PM
> Subject: RE: [CR]Peanut Butter Wrench and Early SR Crank Bolts
>
>
> > Steve Freides wrote:
> > >It seems like the walls of the socket are just
> > >a little too thick
> >
> > and Paulie Davis wrote:
> > >>I have had exactly this problem too. I have ordered Snap-On sockets,
> > tried
> > Sears too, and even bought the peanut butter wrench, all to no avail.<<
> >
> > I got to thinking about this, since I couldn't recall it really being a
> > problem, particularly with Campy cranks. Not to get too anal about it,
> but
> > I did a little quick measuring of the options I have in the shop and
this
> is
> > what I found:
> >
> > Campy NR 3-in-diamond crank arm retainer-bolt opening = 20.7 mm
> > Craftsman 12 point 15 mm socket, outside diameter (OD) = 20.2 mm
> > Park CCW-4 double-ended 14/15 mm ratcheting box-end wrench, 15 mm end
(OD)
> =
> > 20.4 mm
> > Ofmega "peanut butter" wrench, 15 mm (OD) = 20.1 mm
> >
> > So even in my limited research, I have three options that work.
> >
> > Is this a common problem others have encountered? I seem to recall
having
> > the problem with other cranksets, but not Campy. Is it possible that
> there
> > could be that much difference from crank to crank?
> >
> > Wayne Bingham
> > Cold Falls Church VA