Thanks for all the feedback on my ethanol and fiberglass question.

Can anyone give me a consumer report on an IVOPROP on a rotary engine?

Sandy McNabb
Glass Goose - Renesis

It is OK on a pusher version that is in the shadow of the fuse.
On tractor however you might find it OK with a 16 inch diameter
spinner. Anything less than that and the inner ends of the blades
go into a negative angle of attack around 160 MPH on up.

The movable blade version is more of a variable twist prop
rather than a variable pitch prop. That would be a very useful
feature in a VTOL aircraft.
http://www.rotaryeng.net/VTOL.html