Join Date: Jun 2007
Location: Worcester, Ma
Bikes: Gary Fisher Mullet, Centurian Le Mans, a stripped Schwin, some random frames and parts.
Ya dood. ANYTHING can be done. I've done the same thing with a smaller-framed full suspension bike and it was a lot of fun. If you dampen the rear spring a lot it makes for a really fun, bouncy ride. I don't think you'll run into too many issues except maybe extending the existing fork. They don't like to be welded (learned this the hard way) so you may have to get creative. You could replace the existing fork with a stiff one and shove a stiff, small diameter pipe up inside them and then into the tube of the suspension fork. It's hard to describe what I'm talking about but it's along the same lines as what you might do with a tall bike to conect the steering of the two frames, minus the second frame. Hope that makes sense. As far as setting the seat back further, I've seen people chop BMX handle bars in half, making sort of an 'S' shape, and shove the middle half into the seat tube to make an offset seat post. It seemed to work ok. Your results may very.
Hope that helped.