Re: [CR]chainline difference between pista & strada

(Example: Racing:Roger de Vlaeminck)

Date: Tue, 22 May 2007 12:00:37 -0700 (PDT)
From: "jeffrey piwonka" <jmpiwonka@yahoo.com>
Subject: Re: [CR]chainline difference between pista & strada
To: CR List <classicrendezvous@bikelist.org>
In-Reply-To: <213766.7350.qm@web30601.mail.mud.yahoo.com>



--- Fred Rednor wrote:


> --- Sheldon Brown <CaptBike@sheldonbrown.com> wrote:
>
> > Wayne Davidson asked:
> > >Hi all, if I was using a Campagnolo road crankset
> in a fixed
> > wheel, would
> > >the outer chainring position be the same as a
> Campagnolo
> > track
> > >crankset?
> >
> > Definitely not. It would be quite a lot farther
> to the
> > right. The
> > inner ring will likely be in an approximate
> "track"
> > chainline.
> >
> > See: http://sheldonbrown.com/chainline
>
> One thing worth noting, though, is that Sheldon's
> chart assumes
> the road/double crank would be using a road/double
> bottom
> bracket spindle. In my experience, the use of a
> spindle meant
> for a track/single crankset would place the
> chainring (when
> mounted on the outside) in the correct position - or
> close to
> it.
>
> In such a case, though, it's likely that you would
> have to
> grind off the mounting lugs for the inner chainring.
>
> Otherwise, they will make contact with the
> chainstay.
> Fred Rednor - Arlignton, Virginia (USA)

the pista cranks also have the bolts countersunk into the spider on the inside for added clearance, just griniding the mounting ledge for the inner chainring sometimes won't solve the clearance problem.

Jeff Piwonka
Austin, Texas, USA