for those of you who aren't aware, Paul Lipps died a short while ago. He
never produced his prop but had someone else produce them.

My understanding is that they were great in cruise but not so good on
takeoff. I don't know if anybody is continuing his work.

Rich


http://www.eaa.org/experimenter/articles/2009-02_elippse.asp



Craig Catto builds them, I believe.

Brian Trubee