Variable Pitch

First version of a variable Pitch to be implemented in a quad.

Extra parts: (that I found at home...)

1 - 6800 ball bearing;
1 - 1/8 shaft x 80mm
2 - 1/8 bushing 7 x 9mm

The intention is modify an exisisting quad arm to fit it directly.

Please, any suggestion will be welcome!

Revision 1: Added tail blade for test.