This is the smallest that I have come up with so far. It was listed on AstroFlights site. Its the Firefly Coreless Planetary Motor W/4:1 gearbox. Motor with gearbox is 14 grams. With a Gunther 5/4 prop and a 950mAh 2 cell Lipo it will deliver 7000 rpm @ 7 watts. It was listed under brushless, but the description does not mention it. Anyone familiar with it or mini brushless motors in general? Thanks, Joe