In Sacramento there is a very good frame builder and three time P-B-P finisher by the name of Steve Rex. He and his wife have completed all three P-B-P rides on a tandem that he designed and built himself, and he has built numerous other tandems and singles for other P-B-P riders from the Davis Bike club and northern Ca. I don't know if he has yet built a 650 wheeled bike, but it wouldn't be a problem. Steve is also certified to install S&W couplers, and has done a large number over the past few years. The rest of your requirements shouldn't be a problem either. He can be reached at (916) 446-5706. Good Luck.
Note. Steve built my P-B-P bike, and is a friend of mine, so I'm not 100% impartial.
Happy Bike to Work Day.
San Francisco, Ca.
> From: firstname.lastname@example.org
> To: email@example.com
> Date: Mon, 11 May 2009 14:40:15 +0100
> Subject: [CR] KOF tandem - likely builder
> If you were going to commission a KOF tandem, which was traditional in the sense of having 650B tires, drop bars, custom racks, but which had the fangled modern additions of S&S couplers and possibly a Rohloff Speedhub, which builder would you choose?
> My current front-runner is Bilenky.
> Mark Lawrence
> Oxford, United Kingdom