Ref;I'm a bell
Looks a bit like an "H" model that I flew in 1979 on a test flight post overhaul whilst working for the UK bell dealer. Had a Franklin engine and was so under-powered that the Flight Manual had a graphic description of how to do a running take-off and landing. When it was sat on the flight line - into wind - I lifted into the hover OK but when I put in yaw pedal to taxi over to the compass base it would sag back onto the ground. No wonder there weren't so many of them around!!!!