And the latest project. A GSP Katana 72" with a souped up Kioritz 23.6cc running on glow with 40% ethanol/60% gasoline. 8600 rpms with a 16 x 8 and the engine is not broken in. Flight test soon. (I hope.) Engine weighs only 2 lbs. 6 oz. including muffler, prop adapter, etc.

Note: A lot of guys like to run an 18 x 6 on this size engine, which would increase the thrust and the vertical performance at the expense of some speed. I prefer the 16 x 8 myself.

AV8TOR