LM317T Voltage Regulator with Pass Transistor

Kohler 10 HP driving a eBay 7.5 KW 4-pole generator. The engine is set at 3400 RPM max torque curve, generator is running 1800 RPM for 60 HZ. A homemade voltage regulator is installed not shown. The generator does pretty well, so does the engine. It looks like we are able to get about 5000 watts, stable. At 7500 watts, the voltage falls too low and the frequency falls to 42 HZ. At 10 KW the engine is totally overloaded. 5KW is respectable. Generator has about 50 hours on it and seems to be holding up okay.



http://www.youtube.com/watch?v=oslzVvpOcgo&hl=en