Yup, thats just the kind of math Im not good at. Im not sure it was 2200 for the 1005 and looking at its stats, 2400 would be more like it since thats an out put of 21.08 HP. From what folks say, you need 2hp for every 1Kw generated. So probably like a 2450 RPM to 3600 ratio should handle the...