"I'd like to say this one was mine but its 64.5cm!! Must have been Bill Walton's -- I couldn't ride it standing on Brian Baylis' shoulders!"
I rode with Walton a couple of times when he was in Colorado spectating at the Red Zinger, or the Coors, I forget which, they all blend together. I wish I could recall what kind of bike he had with him (do I need to mention that it was a custom?). I do remember clearly that the headtube appeared at a glance to be longer than the fork blades. Maybe a Zinn? I'd like to see Lennard talking to Walton -- one of the few times Lennard would have to look up.
Brian Dribble ... oops, Drebber .... referred to his head tube as being as long as many seat tubes, which sounds like a bit of an exaggeration to me (http://www.speedtv.com/commentary/11282/).
Anyhoo, if my memory is right about the fork-blade-length headtube, that'd put Walton's bike at somewhere well in excess of 70cm. Yowza.
Cheers,
Peter Bridge
DenCO