Summary I publish this but it's not finished project and I will not work to finish it. By printing all parts and some drill job it flyes perfect, but in my opinion it's a little big and heavy and i'm working in a 220 class tilt arm version. This is a first test video fly: https://www.youtube.com/watch?v=GFe7Fs5_32g This is how it moves the arms: https://www.youtube.com/watch?v=WvURjdxvo6I This is a video recorded with a mobius mounted in flight with 330 tilt: https://www.youtube.com/watch?v=rLdhbNzQayw Full part list to print: 2 units of mainplate 2 units of Arm to servo linkage 1 unit of servo case 1 unit and a half of camera protection (front protection and 2 joint units) 4 units of arm support 1 unit arm spacer 4 units of Arm support Also you need some hardware: 4 ball bearings 18x12x4 mm. I use this http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=75522 12 units spacer 35mm. The ones used in micro frames like ZMR250. I use those: http://www.banggood.com/10PCS-M35-M320-M335-Inner-Thread-Round-Aluminum-Pillar-Spacer-Red-For-Multicopter-QAV250-PC-Board-p-1002052.html Carbon or aluminium tube 12 mm diameter, the lenght is what you want 1 Servo metal gears. I like fast and with torque. I used this: http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=19959 Linkage stopers: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=43160, Metal push rods http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=63710 and screws m3x10