T4 Quadcopter Drone

Check out the whole "T" copter family:
- [TX8 Octocopter](http://www.thingiverse.com/thing:753840)
- [T6 Hexacopter](http://www.thingiverse.com/thing:246350)
- [T4 Quadcopter (10" props)](http://www.thingiverse.com/thing:261145)
- [T4 Quadcopter Mini 315 (7-8" props)](http://www.thingiverse.com/thing:408363)
- [T4 Quadcopter Mini 250 (5" props)](http://www.thingiverse.com/thing:304237)
- [Tubular Crossfire 2 quadcopter](http://www.thingiverse.com/thing:261298)
I've added a post on the [forums over at DIY Drones](http://diydrones.com/forum/topics/3d-printed-t4-and-t6) for discussing and improving these designs.
Also, check out the [T4 build overview video](https://www.youtube.com/watch?v=fcePiS2GGag).

###Features:

- completely 3D printable (without support)
- simple assembly
- includes a single motor arm or optionally use the coaxial arms from the T6 and create an X8!!
- strong braced tube section arms with plenty of room to conceal moto