I tuned the telescopic rotor a bit more.
If it works we have it over the V22 Osprey.
It would be fun to smoke them in a race from
a dead vertical stop to top speed.

We are compromised somewhat by the 6.24:1 gear ratio.
Increasing it would add weight to the gear box which is
probably unacceptable for weight and balance reasons.

The rotor diameter at 300 MPH top speed will be about
seven and half feet and at take off it will be 14 feet.
That gives us a nice conservative 13 pounds per square foot
disk loading in helicopter mode. Right in the range of some
helicopters. If we wanted to compromise this a bit we could
go faster on the top end.

Rotor tip speed will be limited to 590 MPH or there abouts.
Engine RPM will be limited to about 7500 and HP about
240.   If we went down on the rotor diameter we might
get the HP up to 275 or so and the RPM closer to 8000.

A turbo would make a big difference and give us about 325
HP at 7500 RPM on the top end. If we went up on the disk loading
we could improve these numbers.

All this assumes we can get the total drag down including
the cooling drag which will be a big challenge.

Here are a couple of Perry's 3Ds.

All this would not be possible without the excellent power to weight
ratio of the Mazda Wankel and carbon fiber.

Paul Lamar ...No rotor no motor.

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