While we are at it, let's go back to the rotordyne. No gears needed in the "gearbox" . Dry run shouldn't be a problem just a couple of bearings to lub. Now that shouldn't be beyond the Ken of man.
Then of course there´s the noise and that's an other question.
Last edited by Sevarg; 11th Jul 2016 at 19:15.
Reason: Predictive text!!!!!