Tricopter 12g/9g servo Yaw mech remixed

Remixed from

http://www.thingiverse.com/thing:275915

Yaw mech modified to fit 12g servo from hobbyking, would fit 9g servo but need to ream a bit plastic for wire clearance

http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=14458