Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

The 3 volt bulb would be the one. Sometimes I use a higher voltage bulb like the 6 volt. It won’t burn as bright but you really can’t burn it out by running the generator at high speeds.

Thank you Mike. I’ll try the 3 volt bulb and if it keeps burning out, I’ll go up to a 6 volt. Much appreciated!