My backup generator running under load

I've had some requests to see my generator running so here it is. I had it running during a power outage from a storm we had on 07/22/08. It ran for 22-1/2 hours straight. The generator is a belt driven 7.5KW 4-pole powered by a Fairbanks Morse 118 engine, most commonly used in the oil field in my area. It is setup for propane. The engine exhaust is piped outside through the wall. We generated about 15 kilowatthours of power in that time.