Franz Schoeffmann is the builder and pilot of
this engine driven backpack helicopter.
He mentioned that he has just about completed an electric backpack helicopter. He has been hopping with it on one motor, while waiting for delivery of the second motor.
He said that it should be on You Tube in a few days.
Dave
P.S.
NonSAC,
Thank you for the continuing updates on Sikorsky's style of 'Innovation'.
D