As far as I know the Cozy IV  is not designed for an O-540. I could be

wrong.

If not Jesses would be better off with a Velocity XL. That would more

easily

handle the weight of a three rotor, the larger cooling system and it's

turbo

compound equipment.

Paul Lamar

Eric Ruttan wrote:

It was designed for an IO-360 at 180 HP
The Vne is around 220 indicated, and it can get there with a 13B.
I would [think] a 600HP cozy would not bear much resemblance to a stock cozy.
http://www.cozyaircraft.com/
http://www.cozybuilders.org/
further questions about cozys can be answered at
http://www.canardaviation.com/forum

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