Alternator fixture arm

This is a little addon for Robotobi's nice wind turbine design ( http://www.thingiverse.com/thing:1766551 ). This arm can be used to hold the alternator (fits a 17mm diameter aluminum rod) 123d design file attached, so you can change the fitting for your needs.

Needed Parts:
2x M4x15 screw
2x M4 nuts
4x M5x15 screw