Date: Tue, 28 Jun 2005 20:11:24 -0700 (PDT) From: Raymond Dobbins <raydobbins2003@yahoo.com> To: Classic Rendezvous Bike List <classicrendezvous@bikelist.org> Subject: [CR]What does ISO mean on a Regina Oro freewheel
hi all,
i have a 1985 6 speed regina oro freewheel nib. the freewheel does not indicate what the threading is, but the box is marked "ISO." for some reason i thought this meant the threading was english - is this correct? if ISO has nothing to do with the threading, how can i know what the threading is?
thanks in advance for your help,
ray dobbins miami, florida
It's even better than British!
I.S.O. is the International Standards Organization.
ISO freewheels threads are 1.375" x 24 TPI.
(Sort of half-way betwen BSC and Italian thread, which are extremely close to one another to start with...).
ISO freewheels are designed to work fine with either Italian- or British-threaded freewheel hubs. They are considered a class "A" fit on any of those three hub threads (British, Italian, ISO).
Greg Parker
Ann Arbor, Michigan