suntimes,

As soon as I figure out how the hell that smartcraft works beyond the water pressure, rpm's and drive trim, I will let you know. I do know that the 700's are not all too efficient, however probably better than twins. I believe I cruise 60 at under 4000rpm. I will see if I can figure out the fuel usage this weekend.

OD

Well, it looks like you got the important read-outs figured out anyways :cool: Screw-supercharged engines should be more efficient than their normally aspirated counterparts at moderate cruise speeds. 4000 rpm is getting up there into the powerband, though. At 3000 rpm, you might be surprised! 60 mph cruise does sound like fun...