Re: [CR]not so (british) standard headset


Example: Production Builders:Peugeot
Date: Wed, 02 May 2007 18:55:35 -0400
To: classicrendezvous@bikelist.org
From: "John Betmanis" <johnb@oxford.net>
Subject: Re: [CR]not so (british) standard headset
In-Reply-To: <20070502203922.79255.qmail@web58705.mail.re1.yahoo.com>


At 01:39 PM 02/05/2007 -0700, simon bird wrote:
>i only found this out recently when a headset i was
>interested in was advertised on ebay as having a 30mm
>'spigot'. the spigot turned out to be the parts of the
>bottom and top head races that fit into the head tube.
>as you all know british standard is 30.2mm.
>so what's up with this oddball size? it was explained
>to me by the vendor - peter paine, that the sizes
>could be told apart by the presence of a groove around
>said spigots on the 30.2mm size.
>
>trouble is both my headsets have grooves but the
>alatet which i wanted to use falls out of the frame-
>headset press not required.

According to Sutherland's 3rd Edition:

English and JIS is 30.0mm French and Italian is 30.2mm (and Austrian is 30.8mm)

Could it be that someone machined down the 30.2mm parts to fit an English frame?

John Betmanis
Woodstock, Ontario
Canada