Join Date: Sep 2007
Location: Dallas area, Texas
You'll likely not find many if any off-the-shelf tandems that will fit a 6'-4" stoker. You're likely looking at a custom frame. CoMotion, among others, can do custom frame geometry; get in touch with them for details.
You have a certain leap of faith required to buy an expensive bike without ever being able to test-ride anything similar to it. But that's what I did with my tandem.
I'm guessing if you have a custom frame made for those dimensions, it might be hard to sell the thing, too. Similar to the extra-extra-extra tall single frames.
"be careful this rando stuff is addictive and dan's the 'pusher'."