Actually looking at the patent paper again (on the web) and at the picture of the actual machine, I see it does have counter rotating blades. Since this isn't an accurate model (just aloosely based on the real platform) I'm going to leave that off for now (see the attached photo for the real platform in flight). As to controlling it, the actuall craft was controlled by leaning into the direction of travel. The blades acted as a gyroscope to keep it from tilting over. THe only real controls were a throttle to adjust the speed of the fan for rise and desent. I've taken several liberties, such as a 4 cylinder motor opposed to a two cylinder motor, and moving the gas tank behind the pilot, assuming it would be used in combat this seems slightly more protected that the orginal. There weren't any screens on the original but that seems like a reasonable add-on if the machine was ever put into production. mike mike