Near the end of the CR On-Topic era, Campy introduced the last version of the Gran Sport crank, a 5-arm 116 BCD, whose rings interchange with the rings of the later Off-Topic Victory and Triomphe cranks. The late GS was often configured as a triple, and used long bolts and spacers. Sounds like the bolts may have been the same as those made earlier for doubles with a chainguard. The late GS triple and bolts for it would be another source to use in making up a Campy NR triple. As someone pointed out, an NR triple with long bolts isn't all that useful, as the smallest ring is 42T unless you can find a rare Campy NR 41T or buy a pricey current TA 144 BCD 41T. The late Gran Sport triple was a lot more useful, with a small ring as small as 35T.
The Stronglight 99, also frequently configured as a triple, used long bolts and spacers as well. Nothing wrong with this design. I've never heard of the long bolts failing, either Campy or Stronglight.
Regards,
Jerry Moos
Big Spring, Texas, USA
> From: billydavid13@comcast.net <billydavid13@comcast.net>
> Subject: Re: [CR] Campy Strada Triple Cranks
> To: Carb7008@cs.com
> Cc: classicrendezvous@bikelist.org
> Date: Monday, May 25, 2009, 10:38 AM
> Hi Jack, all. The triple bolts make
> their first catalog appearence in #15 [ca. 1963] but such
> triples are obviously limited by the 144bcd w/ 42[later 41]
> tooth small ring. The special conversion triple w/ the 36
> small ring appears in catalog #17a [copyright 1975] but
> obviously available earlier. Reproductions of the Campy
> catalogs and so much other great historical material are
> available from Chuck Schmidt's Velo Retro. Peace out. Billy
> Ketchum; Chicago, IL; USA.
> ----- Original Message -----
> From: Carb7008@cs.com
> To: classicrendezvous@bikelist.org
>
> Sent: Monday, May 25, 2009 12:40:39 AM GMT -06:00 US/Canada
> Central
> Subject: [CR] Campy Strada Triple Cranks
>
> The only Strada triples I'm familiar with are those on
> Schwinn P15 with
> drilled and tapped crank-arms. This '75 Norman Fay has
> pre-date code 53-47-42
> triple that uses spacers and longer Campy chainwheel bolts
> for attachment.
> Is this another, more expedient way to home-brew a triple
> and was this
> practice common? Did Campy approve this method...thus the
> longer bolts...or what
> did Campy do at factory?
>
> Jack Romans
> Sacramento, CA
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