Bob,

I am preparing an article for publication in one of the RC magazines, preferably MA, but anyone of them that will pay, will do. Soon as I get commitment from a magazine that they are interested, I will send you the article.

There is significant weight savings that can be had. The 18x12 I just completed weighs in at 50 grams, about 80 grams less than the APCs. It is very stiff and strong as you'd expect.

There are a couple very important benefits, one of which is lower nose weight. But even more important is the significantly lower RMOI the smaller mass generates. The larger mass of the apc causes unwanted forces to the airplane which vary continuously throughout rpm changes. Lower rotating mass reduces these forces substantially and even guys with less flying experience (relatively speaking, probably not rank beginners) can tell the difference. Spool up and down become easier, crisper. True, flywheel effect at idle suffers but it matters very little in an ignition set-up.

That's why I have been most excited by this development. And the Xoar props make the transition to hybrid, true composite props easier because there is little carving involved by the user. These props were not available even as late as spring last year, to the best of my knowledge. I received my first ones around October last year.

Matt