slucajno naletio na ovaj topic i zanimljiv X frame za quada, IMHO odlicno izgleda
http://www.helifreak.com/showthread.php?t=480478 (http://www.helifreak.com/showthread.php?t=480478)
(http://i6.photobucket.com/albums/y231/thothtp/X-Iconcepttp1_zps67e5ef2c.jpg)
(http://i6.photobucket.com/albums/y231/thothtp/X-Iconcepttp2_zps50c2bffe.jpg)
(http://i6.photobucket.com/albums/y231/thothtp/UAVConceptf1_zps5efa7140-1_zps84beef47.jpg)
X-I Frame Quadcopter, first prototype features (http://www.youtube.com/watch?v=K7weSLrkWR0#ws)
pa to sam napraviš, malo pleksija i na cnc zrežeš
uf, cek malo da izvucem cnc iz podruma ;)