Keith Wood wrote:

Okay, time for more wargaming.

Which would you guys pick, the Rotamax one-rotor, or a one-rotor conversion of a 13B, and why?

I'm leaning toward the Rotamax (for weight and for the less-experimental nature of buying a whole, running engine), but I HAVE a 13B that is most of the way through an overhaul, and could be made into a more-powerful one-rotor for half the cost of the Rotamax.

. . .what I REALLY want is for the Rotamax guys to loan me one to do extensive flight testing on my ultralight, but I'm not holding my breath . . .

Keith Wood

I agree but there is yet to be a gear box available for the Rotamax. As soon as that
happens it should be viable option. Are you willing to build a gar box or belt
drive? If you are they might loan you one.

> Paul Lamar

I'm figuring that it would be simple to make an adapter for existing
gearboxes.  My Notax has a factory-made adapter between the Provision 3
engine and the Provision 4 gearbox.

I'm also trying to find a belt-drive unit and solve all the problems at
once.

Keith

Richard Sohn adapated a Rotax or some other 2 cycle engine gear box to a
one rotor and has some bench test hours on it.
Richard Sohn <unicorn@gdsys.net>

Eric, get in touch with this guy. He can help you out real quick.

-- 
Paul Lamar ...No rotor no motor.

I am using a Hirth gear box, because the power rating is higher than a Rotax
C box. I am flying a Rotax on my SOOB.
For the Rotamax, a Rotax B box would likely be the best option. All things
considered, no one can beat that solution.

Richard Sohn
N2071U

Not right away anyway. Ultimately a planetary is the way to go for weight
reasons. Rotamax appears to be shipping sample engines without gear boxes
so they need something quick to get the engines in the air for testing.
I think they have a chance of pulling it off but they need some real world
testing.


Paul Lamar

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