Hello Lu,
Thank you for the info, the Dragonfly I was in yesterday had the two blade tail rotor, whilst I could see the engine thru the mesh I was not quite sure what it was, but later I came across a well engineered space frame with a horizontal fitted very early Alvis Leonides engine connected to a direct drive into a smallish circular ribbed gearbox going into a headset but no blades that must have been a spare engine and transmission for the Dragonfly.
The cause for my visit was to take one of my engines ( I have a small collection) to the Museum for them to use in their Halifax Bomber they intend to fit and start my engine so that people can get to hear what a Bristol Hercules 14 Cyl Radial sounded like on start up. thanks again Lu
My Regards