Re: [CR]re: 27 inch tubulars

(Example: Racing:Beryl Burton)

Date: Wed, 21 Mar 2007 05:17:24 -0700 (PDT)
From: "jeffrey piwonka" <jmpiwonka@yahoo.com>
Subject: Re: [CR]re: 27 inch tubulars
To: Sheldon Brown <CaptBike@sheldonbrown.com>, Fred Rafael Rednor <fred_rednor@yahoo.com>, CR List <classicrendezvous@bikelist.org>
In-Reply-To: <p062408b9c22653553ae4@[10.0.1.20]>



--- Sheldon Brown wrote:


> L Travers wrote:
> >
> > > I have to disagree with this. I scored a pair
> of Contis at
> >> the St Louis
> >> bike swap. The box was marked 27 inch, but the
> tag the shop
> >> had on them
> > > said 700x22. So thinking just what Mark
> wrote, bought them. I tried
> > > putting them on two wheels. After much
> stretching and creative
> > > language, I knew there was no way they would go
> on. I measured the
> > > circumference vs the circumference of a
> different model Conti
> > > tubular that I am able to mount. It was 3
> inches less. Clearly
> > > there is a difference.
>
> Fred Rafael Rednor wrote:
>
> > I'm sure that had to be mistake of some sort.
> I mean the
> >guys in the shop must have both mismarked the tires
> and put
> >them in the wrong box. The Continental catalogue
> (and the Web
> >site) indicate that, as far as tubulars are
> concerned,
> >27=28=700.
>
> It's also quite possible that Continental mis-marked
> them. I have
> seen many incorrectly marked Continental tires.
>
> However, if they are _smaller_ than regular
> tubulars, they might be
> 26 inch, a.k.a. 650C
>
> If "27 inch" tubulars existed, they would be
> _larger_ than 700C, and
> they would be too _loose_ on the rim, not too tight!
>
> Sheldon "No Sucha Thing" Brown

my continental that doesn't want to fit is 74" circumference measured around the inside of the tire. i found this site. http://www.bikecult.com/works/wheelsizes.html

and going by the 20-630 the circumference should be about 1978mm which i think is 77"

no way that tire will stretch 3", right?!?! i put some vittoria rally tubulars on my other bike and had not too much trouble getting them on. i compared this continental to another vittoria that hasn't been on a rim in a few months. there looks to be about a 3" difference in circumference between the two.

thanks, jeff piwonka austin, texas, usa


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