Here's a few links for you guys building planes using BitCar gear. I just flew my "BUMP" plane last night for the first time and it flies great. I modded a bit Rx with the drop-in replacement Mosfet and used an N-20 motor with a GWS 2.5 x 1 prop. 144 Mah Lipoly cell and I made my own actuator for rudder. I've got 10$ in the plane.
AUW is 23 grams. And here's the links. Lots of info here.
http://www.rcgroups.com/links/index.php?id=4392
http://www.rcgroups.com/forums/forumdisplay.php?f=85
http://www.rcgroups.com/forums/showthread.php?t=225017