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.
Big Spring, Texas, USA
> From: email@example.com <firstname.lastname@example.org>
\r?\n> Subject: Re: [CR] Campy Strada Triple Cranks
\r?\n> To: Carb7008@cs.com
\r?\n> Cc: email@example.com
\r?\n> Date: Monday, May 25, 2009, 10:38 AM
\r?\n> Hi Jack, all. The triple bolts make
\r?\n> their first catalog appearence in #15 [ca. 1963] but such
\r?\n> triples are obviously limited by the 144bcd w/ 42[later 41]
\r?\n> tooth small ring. The special conversion triple w/ the 36
\r?\n> small ring appears in catalog #17a [copyright 1975] but
\r?\n> obviously available earlier. Reproductions of the Campy
\r?\n> catalogs and so much other great historical material are
\r?\n> available from Chuck Schmidt's Velo Retro. Peace out. Billy
\r?\n> Ketchum; Chicago, IL; USA.
\r?\n> ----- Original Message -----
\r?\n> From: Carb7008@cs.com
\r?\n> To: firstname.lastname@example.org
\r?\n> Sent: Monday, May 25, 2009 12:40:39 AM GMT -06:00 US/Canada
\r?\n> Subject: [CR] Campy Strada Triple Cranks
\r?\n> The only Strada triples I'm familiar with are those on
\r?\n> Schwinn P15 with
\r?\n> drilled and tapped crank-arms. This '75 Norman Fay has
\r?\n> pre-date code 53-47-42
\r?\n> triple that uses spacers and longer Campy chainwheel bolts
\r?\n> for attachment.
\r?\n> Is this another, more expedient way to home-brew a triple
\r?\n> and was this
\r?\n> practice common? Did Campy approve this method...thus the
\r?\n> longer bolts...or what
\r?\n> did Campy do at factory?
\r?\n> Jack Romans
\r?\n> Sacramento, CA