Behold: The AeroAce Quad!
Just finished building my Quad AA by combining the electronics and motors from two planes. I shaved out the battery compartment so that both batteries would fit next to each other, and cut out a slot in the top of the fuse to hold the electronics/charge plug/switch for the secondary motors. Both operate on frequency A, so only need one controller (just have to charge 2 batteries). More photos of the prototype and build process for this can be found here:
http://www.flickr.com/photos/sxates/...7594071618186/
We have 27mph winds out right now, so I haven't been able to test this out yet. For now I've kept the stock wing configuration, but may change it up a bit after getting it outside to see how it handles. From what I can test inside, this thing is FAST. Easily twice as fast as a single, and far too fast to control indoors. Sliding on the concrete floor, it almost takes off from the ground. More to come when the wind dies down!