He made it out of wood and a motorcycle engine:
20 year old Chinese farmer Wu Zhongyuan built himself a helicopter using only — according to the man — what he remembers of middle school physics lessons and "relevant knowledge [found while] surfing the Internet via my mobile phone."
Well, sure looks like things worked out. His single-seater conveyance has blades made from the wood of an Elm tree, a frame reinforced with steel pipes and uses an engine from a motorcycle — all for around $1,600. Wu claims the 'copter can get him as high as 2,600 feet, though it seems he's grounded for the time being as the Chinese government has forbid him to fly because of safety reasons.
Link via Geekologie
But on second thought, I'm gonna call it Awesome instead!
Small motor, small rotor, no cyclic control, heavy frame, and a clueless designer/pilot. I wonder why the Chinese government is worried.
I go to Mars and the outer planets every night in my Dreamship...!
I just love the idea of the Chinese government getting upset about safety.
Sikorsky's first cyclic control helicopter was the VS300 and had a three-blade 28ft rotor and a 75hp motor (which was soon upgraded to a 90hp motor).
I'm pretty sure the Chinese dream machine doesn't come close to either of those spec's.