On an ~'73 Gitane Tour de France that came with French threaded Sugino
cranks, and a Sugino BB spindle/cups that says "Strongr" on the
spindle, is it possible that these cranks were ISO and not JIS taper?
Does anyone know if Sugino made ISO taper cranks and spindles for this
vintage of French/or Italian bicycles?
I found on Sheldon's page that said Sugino spindles with a "5" marking
were 70mm wide for Italians, but he doesn't say if the taper is ISO or
not, or if this matters.
And I've read some postings by Peter Chisholm and A. Muzi that say it
really shouldn't matter if I use a JIS Shimano taper with these so
long as I snug it up enough. I'm in the process of buying French Phil
BB rings and installing a UN72 to try and match the old Sugino BB due
to problems with too much drive side cup loosening. Anyway, just
wondering if taper should be a concern.
Thanks,
Mark Beattie
Washington DC