Can anyone give me input on the IVO prop used on rotaries?  I am considering
the Magnum electric in flight adjustable and I wonder what experience you
have had.

I saw where Tracy Crook tried one and, I suppose, didn't like it.  I am not
certain as to why...

Thanks,
Bill Bradburry

In tractor use they seem to run into a brick wall around 180 to 200  MPH
due to the flat part of the blade near the hub. A lot depends on the
size of the spinner.

Paul Lamar