This is an email I got from Fred this morning regarding production of Paul's prop, and how it is intended to be used-
So, for now, it's concept and built for racing.Chad,
We don't have all the answers yet. The Elipps we built, which you read
about, is a three blade, fiberglass coated prop for the 150 horse power
RV-6. It performed as well as a 160 horse.
Price was nearly $3,500 because it was three blade, the Elipps design
requires a difficult airfoil, and the fiberglass work added much labor. It
is a racing product, not a sport pilot friendly type of product. The tips
are extremely fragile and though it performs ok for take-off and climb it
could be better for heavy, high density altitude take-offs.
I am currently building another two blade prop of Elipps design for testing
this spring. It incorporates our Bicamber technology and should allow use of
two blades, eliminate the need to fiberglass the entire blade, while
improving take-off and climb. If this prop does the things we hope and
retains the speed advantage of the Elipps we will offer it as a production
Time will tell...