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Buly, I have no experience with an IVO, but I do want to remind you  that maximum static rpm does not NECESSARILY mean you are getting  adequate thrust.  I recall one individual who concluded that  maximum engine rpm = max thrust.  He reduce the pitch until he had  maximum rpm, unfortunately the thrust was just enough to get him  airborne, but not enough to accelerate to a safe speed.  He never  gained altitude and  impacted a cactus with fatal results.

If your prop is set up similar to John's then you have a comparison  and assuming your bird is similar in weight, etc, then is probably  Ok to fly. I'd do a few taxi test and if your acceleration feels  strong then you are probably  generating good thrust.

Any other "prop" guys want to advise Buly.


Ed

Ed, last night I found information on another Cozy with 6 cylinder  Subaru 230 HP, same reduction ratio and the same prop.
At fine pitch like me, he was getting 4400 rpm and was able to get  2000 fpm at 80K on take-off.
I fully intend to do fast taxi tests before flying.
Buly

Ok, Buly, sounds like you are in good shape.  That  guy with the Subaru is not Dwayne is it?

Ed