This (http://www.instructables.com/id/EQR7OQNG4SEP287QNW/) is a riot. Somebody try this (http://www.instructables.com/id/EQR7OQNG4SEP287QNW/)! :eek: ;)

he admits it's bloody awful to ride.
no stoker bars is a pretty exciting concept.

All out of baling twine?

Certainly not elegant workmanship. (This comment comes from the guy who once put the front end back under a race car with four coat hangers and a roll of duct tape; the driver said it handled like it had two steering wheels.)

Doc

I don't know how you managed that DocF, but you got skillz.

Anways, I wouldn't want to ride it. With what I do to my bike, I'm paranoid enough that it'll snap in half or the head tube from this fork, but riding a frame fastended with duct tape? I couldn't do it.

I you're going to go to the trouble of hacking up two bikes, I would have thought the extra effort in getting it welded / brazed by the local framebuilder or car bodyshop would be worthwhile. Plus then you could swap the chainstays for a substitute boom tube. For $50-100 in beer or similar, you'd get a worthwhile tandem that wouldn't require checking the life and dental insurance before each ride.