I hear you, deryckere. I've had the BME and a couple of other gas engines. The BME was on my Patrick Extra and the power was good. One of the things I really LIKE about the big MOKI's is the smoothness of the power vs the gas engine , particularly in the midrange. There is no burbling while the engine transitions from low speed needle to high speed needle. My BME 44 spent much of its time in this "burble range" while at maneuvering speed. A little higher RPM and the burble disappeared, but then the plane was often going a tiny bit too fast.

So I understand what you're saying about gas engines. However, I am now thinking that these big MOKI's have a performance advantage over the single cylinder gas engines . They work well on these 14 lb airplanes.

As far as economic advantage , here is how I see it. There is a $150 difference in purchase price between the ZDZ and the MOKI's. The operating cost of the glow is higher, but I can fly the MOKI powered plane for more than a hundred flights on glow fuel before I see any operating cost savings . At one hundred flights, my interest in the plane may be half over anyway.

-Mark-