Ok, enough poking around has revealed that Campagnolo simply used PISTA-badged cranks as the left-side drive cranks on their tandem equipment....and then they threaded it backwards from a standard PISTA crank. So, I have an orphaned crank from a Campy-equipped tandem (were these used on the 70s Paramount tandems?).
Anybody in dire need of such a thing?
There's a full set up on eBay right now: Item # 280003384705. A complete setup also made the CR high-water list a while back.
Cheers,
Scott Minneman SF, CA
-----Original Message----- From: ternst [mailto:ternst1@cox.net] Sent: Saturday, July 01, 2006 11:32 PM To: minneman@onomy.com Subject: Re: [CR]odd campy pista threading
Rethread and put in helicoil with the 5/8" to 9/16" size and make it the
size and side thread you need.
Talk to Bradley, Peter or Parker, and they fix you up.
Tell 'em Ted sent me.
T
>A couple of people have asked (offlist) whether these problem cranks
>are marked as pista (theorizing, I suspect, that they're a crossover
>or front crankset made for a tandem).
>
> Answer: Yes, they are stamped 172.5 PISTA.
>
> Did Campy make drivetrain components for track tandems? There must be
> a simpler answer.
>
> I found another drive-side crank to use for now, for this build, but
> now I have two different length cranks on the puppy. Does anyone have
> a non-drive
> 177.5 SR or NR crankarm they want to get rid of? Pista or Strada
> would work.
>
> Scott Minneman
> San Francisco, CA
>
> -----Original Message-----
> From: classicrendezvous-bounces@bikelist.org
> [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of Scott
> Minneman
> Sent: Saturday, July 01, 2006 9:06 PM
> To: classicrendezvous@bikelist.org
> Subject: [CR]odd campy pista threading
>
> Two left feet?
>
> Ok, so I'm building up a fixed gear, and I have a Campagnolo Pista
> crankset I want to use. It's a 144BCD crank with 9/16 x 20F stamped
> at the pedal hole, but it also has a large "S" near the pedal hole.
> This thing has reverse pedal threads on the drive side!
>
> What's the story here? None of my other cranks are like this. How do
> I deal with this puppy? Do I have to thieve a left-hand spindle and
> put a right-side body on it? Why the heck is this crank the way it is?
>
> Anybody have a spare left-hand pedal spindle laying around for a Campy
> Pista pedal? How about a left-hand pedal spindle for a Dura-Ace 7400
> Pista?
>
> I was so smoothly spiraling in to completion of this bike. Grrr.
>
> Cheers,
>
> Scott Minneman
> Annoyed in San Francisco, CA