Anybody into r/c flying?
I wish my pt40 still worked. We would conduct a little experiment. I have a roll of construction paper in my house, and I could pull the paper under the airplane and throttle the plane at the same time. That would prove it once and for all.
Does anybody happen to have a .25+ ci engine laying around? Probably not. My OS 46FX broke when my plane was crashed.

h: