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Old 03-10-2017, 05:17 AM
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Abuelo
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Join Date: Sep 2013
Location: Arizona desert
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Read on a forum somewhere that someone did. One cylinder flew off due to the high rotational speed and that led to serious vibration.

Problem is the difference in rotation speeds. A rotary engine operated at around 1,200 rpm and for a scale speed the outrunner would need either to be slowed way down for a direct mount or have some sort of reduction system fitted for the rotary part. There might be an outrunner out there that could provide usable thrust at 1,200 rpm but I'm not aware of it.

You'd also have to deal with the increases in weight, drag, and torque. I seem to recall that the WW1 planes fitted with rotories would turn readily with the torque but would struggle to turn the other way. The opposition pilots knew this and used this limitation against them.

If you try it, keep us posted.
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