they also could've used a mixed tubeset. i have a gazelle with a reynolds 531c sticker on it, it takes a 26.8mm seatpost (much to my surprise, i expected 27.2).
Jeff Piwonka
austin, texas usa
> Hello,
>
> As far as large frames using Columbus tubing go
> they normally take a
> smaller diameter seat post, normally 27.0 (Columbus
> SP/SPX) or smaller due
> to the increased wall thickness of the tubes used to
> keep the frames stiff.
> Or at least this is what I assume. I was shocked to
> see my 78-79 Colnago
> Super take a 27.2 seat post; come to think of it my
> Basso Gap also takes a
> 27.2 seat post, but my Mondonico and Bottecchia both
> take a 27.0. I guess
> this is the difference in tubing thickness between
> SL/SLX and SP/SPX. BTW,
> both my Reynolds 531 Schwinn Paramounts take 27.2.
>
> This leads to a question about Colnagos, how were
> their frames measured?
> I have a 62cm C to C frame and the one being sold by
> David White is a
> 62.5cmC to C. Did Colnago make half sizes? The
> reason I ask is that
> all my other
> 62cm c to c frames (both American, French and
> Italian) fit perfect with a
> Brooks saddle and a campy Record seat post at or
> close to the max limit
> extension, that is all but my colnago super. for
> some reason the Colnago is
> still more than .5cm short. Does have to do with
> the seat tube angle?
>
> Rich, who now believes he should use a larger
> Colnago frame, Robinson
> Jacksonville NC
>
>
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