quad TC-R motor and arm protector V1

First version of a TC-R quad motor and arm protector.

Sidewall is approximately 2.5mm

There is a newer version of this protector which can be found [here](http://www.thingiverse.com/thing:1905228).

You want it lighter, shorter and stronger? [This is](http://www.thingiverse.com/thing:1958519) the final version of my multipart arm and motor protector and some tips printing it on ninjaflex.