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?