Scythe Motor cover for UDIRC 816 quad copter - protects your delicate wings

These are copied from user gsterley, but modified so that you would not need to take your original motor mounts off.. These just slide on over the existing motor mounts. They fit fairly snug, but are shaped so that they leave some air space to allow the motors to keep cool.
Update 8-4-2014 I decreased the mass of these slightly and cleaned up my rough curves, and have put mirror images on the same print. That way you can make one print in one color for the back and another print in another color for the front.
I had the opportunity to take one of the existing wings apart, but it is not very easy, and you need a good set of eyes to connect the tiny wires and some very small shrink tubes to insulate one of the wires. So this design does not require any disassembly.
8-8-2014 Another modification - tightened the slot to fit tighter and prevent wobble, and strengthened the radial arm by 1 mm in width to give it more strength.