Sig has a line of Kavan props that appear to be a cross between an APC and a Master Airscrew in design and construction. They are listed in their site under nylon props (not very well listed in my opinion) and are both plain nylon and glass filled nylon construction. The plain nylon are yellow and the glass filled are black (the site doesnt specify this either).
Has anyone used any of these? The wide blade looks like it might make good thrust at lower rpm to me. Maybe a good 4 stroke prop?
They are made in Germany so I can imagine the quality will be excellent.
I have one but it will be a while before Ican test it.