[]Sorry to say that I've missed it. Not because I didn't check the thread, but rather because my creaky old repiratory system was introduced on Thursday to a rinovirus it hadn't met, and they just HAD to get aquainted. Consequently I've been nearly comatose on cold medication for the last 72 hours. All the more frustrating because ILSP is less than a mile from my office.

Obviously that's static RPM at full throttle, and that gives me an idea of the HP required. I get the idea that 10" is about all the prop diameter you can swing without raising the thrust line?