Bitcraze Crazyflie frame v1.7 series

A frame/cage to crash protect the Bitcraze Crazyflie.
This frame has been specially developed so as to protect the top of the Crazyflie and prevent from the impacted motor bearing syndrome.

see http://paulogeraldes.blogspot.co.uk/2013/05/crazyflie-frame-v17-assembly.html