Revised Tricopter body

Revised version of the tricopter body by ennui2342.

This version has been adapted to the original size and hole positions from Tricopter v3 by David Windestal, and uses the original front spacer you can find at rcexplorer.se/downloads

I have been suffering from slippery front arms since I made my first 3D printed tricopoter, so I placed two little taps ment to hold the arms to position.

EDIT -- 11/01/2015: Added a customizable tailmount, you can any size of servos/booms to your taste.