ORIGINAL: skyhawknut
All true.
However - it was faster and loaded down the glow engine because it's got a higher pitch blade, that increases the amps over anything else.
How do you figure this? Oh use the same electric motor from a Dynamax right? Or you could use the correct Kv motor that matches the fan and obtain the level of performance you want.
So the efficiency of the rotor is not in question then? in that case there is no arguement about pulling more amps, the HET fan pulls more amps than the wemo minifan, it also produces more thrust and more speed in the air when using the same motor, drop the Kv and you can bring the amp draw and performance in line.