LINK: You Tube video of the Dragonfly in use!
Year & Model: 1956-9 Dragonfly 80 Cruiser
Horsepower: 4 @ 4,000 RPM
Bore: 2 1/4"
Displacement: 8 CID
Ignition: Wico FW Magneto
Point Gap: .020
Retail price when new: $229.50
Weight: 58 lbs
Oil/Gas Mix: 10:1
Spark Plug: Champion J-8J (Now J-8C)
While I will say it is cool and fun to run, the Dragonfly has to be the most inefficient outboard ever made. On its best day, almost any traditional outboard will run circles around it. Forget the ads with lilly pads and grass, there is no way it has enough thrust to push a normal skiff through them. Even on a clear waterway, against a slight breeze or current, forget it, you are going backwards!
It also is very hungry - running at the full 4,000 RPMs it runs through a tank of fuel in about 30 minutes. (At 10:1 the exhaust is pretty smoky too!) Ear protection is mandatory or you'll be deaf as a post in 10 minutes.