Originally Posted by
qazimoto
The noise sounds good to me, it's definitely not over-compressed. If you cut the oil back to be the same content as that of the glow fuel you should pick up the 700 rpm. Even then you'd have to ask yourself what's the point apart from the novelty value?
That is all it is right now, a novelty item. I started off with the dream of massive amount of power increase, and so much more fuel efficiency than glow but now after looking at my glow fuel price vs the diesel fuel price, the power being really close to the same and the fuel economy being about the same (1 oz/minute); I think I will fly the plane the engine came off of once and then convert back to glow and call it a "Been There, Done That" experience. A quart of fuel would last a lot longer on a smaller engine but with a big 91, it won't last more than half an hour.