Or tie the cord to a brick, and put the brick on the ground.Speaking of hand-propping, I wonder if (depending on throttle knob geometry and stiffness) you could hang a small parachute out the side window with the cord attached to the throttle? Hi rpm would blow the parachute back and it would pull back on the throttle.
I’ve propped J-3’s from behind while holding the tube at the back side of the windshield. I never have, as claimed above by another poster, propped a J-3 while in the seat.I have flown J-3's and PA-11's on floats and have held the door frame with my left hand, flip the prop with my right hand and I do not have monkey arms.
I’d give it a go. Kind of like Earnhardt cleaning his windshield while rolling down pit road at 70+ mph. Fun meter off the chart!!
I’d give it a go. Kind of like Earnhardt cleaning his windshield rolling down pit road at 70+ mph. Fun meter off the scale!!!