(DO you want to sell them and make some money or not? What do you care why I want them?) So I tell him that I use them for RC airplanes, and he tells me they won't fly an airplane.
I went to another shop and the guy was playing 20 questins with me. Why do you want them? They don't run. What makes you think you can make one of them fly a toy airplane.
Your comments cause me to wonder what the reception would be if you carry an airplane with an engine mounted and show it to a mechanic. Mechanics generally like experimental and unusual projects. Maybe seeing airplane with engine would eliminate the concern. The concern comes from a lack of understanding.
Bill