Originally Posted by
Sport_Pilot
Not sure why you would use gas except for larger planes. Power would be way down.
The gasoline glow plug guys usually are bashing the "slimer" glow engines but those glow plug gas engines aren't much different in the slime department. The Norvel .40 gasoline glow engine
requires 14% castor oil, no synthetic. That's a load of slime right there... Then the next argument is the cost. Gasoline is cheaper than glow fuel. True, but the glow plugs are almost twice as expensive for the gasoline glow engines. In the long run, I see it as being close to a wash when you compare electric, glow, and gasoline power plants. I say this taking into account used engines are worth less than half of what they were new so resale is poor. Then to buy new gasoline engines or new electric stuff... It adds up quickly.