Since I'm flying the "sistership" to that funtana I'll chime in. The motor is a prototype hacker,.. sort of a revision to the B50-XL series. The motor is roughly 12 ounces. You then have the gearbox, mount, speed control,.. total about 16 ounces for the power system. The 30-cell nimh batteries that have been used in the funtana's are about 4 lbs. The lithium pack drops that to about 2.75~3 lbs for the "fuel" component, and takes flight times from about 8 minutes to somewhat over 20 minutes. The motor is a 14 wind , like the B50 14XL, but it's a newer version with many differences. I flew the one in the video last weekend at an electric event, and the lithiums really provide a huge increase in performance, along with the higher ratio gearbox and larger prop. Mine has been flying at 5.2 ratio with a 20X8, but the 22X10, 22X12, and 24X12 electric series props were just released by APC, and the aero-model/hacker guys have installed a higher ratio gearbox to swing the larger 22X12 prop. Although mine is expending more power (2100+ watts input, roughly 3 horsepower), I have a touch less pwerformance than the larger prop, lower input power setup in that video. It's really an eye-opener when you start using larger and larger props with an electric. You get more "usable power",..i.e. thrust ,.. AND speed (assuming pitch is right), with less power drawn from the batteries. As a side note, I'm using some of those same lithium polymers in my E3D, and my logo 10 electric heli. The logo is full 3D for 20 minutes and about 7 ounces lighter, the E3D is a 1/2 lb lighter and now goes for just over 30 minutes of full 3D style flying.