At the Workshops, years ago, we had a Climax Rock Drill trailer mounted compressor with one of the Meadows 6DC engine in it, the output was enormous. I thought at the time, as we used to get a lot of Explorers in for repair, that it would go well in one. Also had a lot to do with the four cylinder version in the 27.5 kva gen set, had to hand crank those as there was never any air in the starting system.