forget,
Thanks for the information related to foreign patentability.
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slowrotor,
IMIgnorantO, the RMAX may have good stability. However, like the Mosquito it may not have good controllability.
IMO, the stiffer the RMAX blades are, the greater the 2/rev vibration is. Perhaps in models the rotor speed is so fast that the high frequency is not considered detrimental.
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Mart,
I'm not giving up on the gyro, it's just that the mind got temporarily side tracked.
Your last two paragraphs are very valid.
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The thinking behind a small light gyro with an exceptionally fast RPM, is that it might be justifiable if it (a single item) can satisfy more than one or two rotorcraft shortcomings.
Hopefully, stability and controllability are two of them.
Dave