The best thrust I've been able to find is with the Aeronaut turbofan 8000. Like the Schuebeler also made in Germany. It's $479 US at http://www.icare-rc.com/edf.htm claim is 26lbs of thrust from 145mm edf. I think that we're looking at a 200 mm plus rig, something like 25k watts and up. I'm...