Vertical rocket launch from a 900mm multicopter. Laser cut frame design template: http://www.polakiumengineering.com/downloads/heavy_quad_pattern.pdf Build Log: http://www.flitetest.com/articles/roc... Arms - 1"x1"x36" Basswood Motors - 400~800KV ESC - 30~40A Battery - 4~6S 5000mAh+ Props - 12~15" (8) M5x35mm Bolts (8) M5 hex nuts (8) M3x35mm Bolts Additonal content: https://www.youtube.com/user/TheRCTutor http://www.rctutor.org/ More information including parts lists and build logs at: http://www.polakiumengineering.com