prophanger1...
You had a YS110 on the 46!?!?!?!?! Crazy. I'm using that engine on my 60. It works great on that. But on the 46....I can't imagine it.

agexpert...
If you go with the Saito 82 a 14x4W prop is a great starting point. That's what I run on mine and I love it. I fly at 4800' elevation. But I use 30% to compensate. If you are lower you may pull a 15x4W. Or if you use 15% you'll be happy with the 14" prop. Nice engines, Saitos. I wouldn't recommend going with a 6 pitch prop on the UCD46. Just to easy to overspeed and make everything flutter. Flutter isn't good...unless it's your heart.

Thanks
Barry