I've only just got round to updating to 1.7.1 and figured I might as well get the BG DLC as well.  It's not going too well so far. As an experiment I thought I would first have a play with the new robotics hinges and rotors.  I thought these would make it a lot easier to build a Harrier style craft, or maybe something with variable geometry wings.  As a very basic test bed to work out how the hinges and rotors worked I just attached them to a girder with a couple of batteries for power (if