Scott,

I just revisited the IVO website to review their prop choices, and confirmed they have a 18 to 52 inch pitch, and a 35 to 70 inch pitch range. For a 80 hp 912ul you'll want the 18-52 pitch. Oh, and apparently the IVO" Patriot" blade is a 35-70" pitch as well, so it needs the 100 hp 912uls to be most effective.

Trying not to sound too negative, I don't think IVO themselves understand what I'm trying to explain. I've called them on my seaplane prop problem of not getting enough rpm on takeoff and their answer was to sell me the new Patriot blade, which would have been no better than the 35-70 " inch pitch