Not sure which size best suits the .46 but I switched all of my props to APC wide props and they seem to fly a lot better. I've got a WM CAP with a YS .63 in it and a 13x4W prop and it will do anything in the air and slows down great for landings. Going with an 18x8W on my OS 1.60 as soon as it's broke in. You should check it out. Okay, Just checked and APC doesn't have a 11x6W for this engine but Zinger does. They also do a 12x6W. Here's a link. http://www2.towerhobbies.com/cgi-bin...?&I=LXLG00&P=7