RE: smoke pump
As I was getting eaten alive wile hovering the back yard, I was just thinking that if the stream of exhaust that I could clearly see had some of the citronella oil (that I put in the torches) I could have fun wile I sprayed the back yard.
Would it be great if your wife asked you to go fly the heli?
I bet it would not take but a few drops per tank. It is oil; at most it would foul out a glow plug to try. I let you know if I try it.
PLEASE DO NOT PUT REAL GAS IN A GLOW MOTOR!
You will destroy the motor and could get hurt.