Summary This is the final design of scrab tricopter. The tail tilt system is designed to avoid oscilations and to easy PID adjust. There are 2 options of motor size and prop arms. For a fast one choose 220x size with 5 inch prop, for a light configuration choose 180x size with 4' prop arm You can find instructions of building process and how to setup flight controller in the video. Hardware list and recomended components are placed above. Don't doubt to ask any question. How to buid it: https://youtu.be/I3Fz6et4SUY Video testing how it flyes: https://youtu.be/RWwUX7yDh0g Print Settings Printer Brand: RepRap Printer: Prusa i3 Rafts: No Supports: No Resolution: 0.15 Infill: 40 Notes: Printed in ABS or HIPS. How I Designed This Custom Section List of parts Motors (3 units): http://goo.gl/xsg2Lg ESC (3 units): http://goo.gl/SZ1uz2 Fligth Controller: http://goo.gl/kxxkzk Servo: http://goo.gl/rQvwTL BEC: http://goo.gl/PXVZEf Camera: http://goo.gl/JTNMqa Video transmitter: http://goo.gl/6545JM Video antenna: http://goo.gl/4sE9SB XT60: http://goo.gl/bq21H1 Velcro: http://goo.gl/mmMrfI Hardware Screws: 12 units M2x20 5 units M2x12 2 units M3x12 Bearings 2 units Hole 3mm, outer 8mm