I had one of these back in 1981. Sourced from a bloke called, I think, Ron Lang from Dandenong. It was fitted with a cog tooth belt re drive and used Victa ignition and a Tillotson 'pumper' carb. It functioned for about 5 hrs until it broke the crank. I was lucky to land the Pteradactyl in a cow paddock - sure scared the cows! When questioned about the cause of the crank failure, Lang answered that he "probably omitted to instal a spacer washer on the crankshaft. It was a brave attempt back in those days but in reality it should have remained on the ground if not as a boat anchor. Regards, Don. PS. It also was fitted with Victa de-compression valves to help starting.