Joe, Tom should be familiar with Swiss thread, as he sold me a Swiss threaded 1969 Allegro Special earlier this year. I repacked the HS, and this bike, at least, does indeed have a French HS. But I didn't change the original stem, so I had no reason to measure it. Do Swiss bikes with French HS thread really have 22.2 stems? Anyone else encountered this? I guess I just assumed they would be 22.0. I'm going to pull out the trusty calipers and check the Allegro. By the way Spanish bikes (at least Zeus) with French HSs seem to have 22.0 stems as expected, at least based on my sample of three Zeus bikes or the stems from them.
Regards,
Jerry Moos
Joseph Bender-Zanoni wrote:
> As to the Tigra, Swiss bikes can come with a variety of threading. The most
> predominent BB threading would be Swiss. The adjustable cup is like French
> 35X1 right hand thread. The left cup is a left hand thread. The Campy NR
> fixed cup is marked 35 X 1 followed by a large S. I have never worn out any
> of the Swiss headsets on my two Swiss bikes but I have always presumed they
> were French thread. The strange thing is that they take 22.2 mm stems.
>
> Joe Bender-Zanoni
> Took a lousy hard fall at about 20mph today on a steep downhill corner.
> Slick Avocet tires in the rain is a bad idea. Anytime you ride away from
> one like that you are pretty lucky. Keep the rubber side down!!
> At 05:40 PM 11/7/00 -0500, Tom Hayes wrote:
> >One of the problems in being ignorant about certain aspects of bicycles
> >(there are many; this being only one) is that when I ask a question, like
> >yesterday's when I asked about azzurro components and I receive no
> >response, I cannot determine whether my question is so obvious no one wants
> >to bother answering or it is so obscure that no one can answer. In any
> >case, no one responded about azzurro parts, except one knowledgeable person
> >who would also like to read any information on Azzurro components. They
> >appear on a Lazzaretti bike.
> >
> >On to another question: anyone know anything about Tigra bikes: swiss flag
> >on the seattube, nervex pro lugs, NR components marked 73, all 531. I
> >haven't taken the crank off to determine whether the threading is French or
> >not; the current owner doesn't want me to take it off unless I'm sure I
> >will buy it. Sort of picky person, but that's all right. He said he
> >bought in Germany around 1975.
> >
> >Thanks for any information on either.
> >
> >Tom Still in the Dark in Chagrin Falls
> >
> >Tom Hayes
> >18585 Munn Road
> >Chagrin Falls, Ohio 44023
> >hayesbikes@nls.net
> >hayes@jcu.edu