With limited space, I like the hinged RT idea - as long as the surfaces are precisely flush, the workbench becomes the outfeed table for the RT. That's handy. You'd just need to add some height adjustment to the outboard support legs on the RT, so you can be sure the surfaces are co-planar in use. You could also add a couple of blocks on the underside of both tables, so they could be clamped together (C-clamp or bolt/wing-nut) when the RT is up. That would eliminate the effect of any play in the hinges.
As to holding the fence in position, T-track is convenient, but not the only solution. Why not just add a flange to the back of the fence, drill/rout a slot for a through bolt on each side of the RT? You'd want elongated slots for the bolt on the fence flanges to allow flexibility in alignment. So-called star knobs (purchased or home-made) make adjustments easy. You could also rout a shallow dado on the bottom side to use T-bolts, so the head of the bolt doesn't turn. A thin strip of material, tacked in place, would keep the bolt from falling out.
Last edited by Ralph Barker; 12-24-2010 at 11:11 AM.