The "jury" just returned on the 2.21 Ratio Drive on the 2.4L and I love it....but there is one more round to go. I have been flying N421RB solo and with as much as 335 pounds in passenger and fuel. It is still climbing between 900 - 1200 FPM and believe it or not is faster at the same time. It has been a blast! We have been doing some Ultralight/Microlight training profiles at 4000 - 4300 RPM's. That means that the 2PT with full fuel and two people on board is using less fuel per hour than our MZ 202 powered Ultralight or Microlight! Wow, what a great gyroplane!
Over the next couple of weeks I will be flying a 2.34 ratio drive on a Revision "C" airframe. Roughly 75 pounds lighter, turning the same propeller slightly slower should produce a crazy rate of climb and a slightly slower cruise. FYI....This particular frame will be stationed at 6,000' and a great climb will be a wonderful asset. Either way, I am loving the Revision "C" airframes......
Wait a minute, what is that in the background....could it be another Pink Gyro? Wait 'til Bensen Days!
PS: Have a great weekend!