So I have a new JBA .56A and have been testing diffrent props but i would like to try a 3 bladed prop. The recomended size for 2 bladed is 11 x 7 through 12 x 6 so would a 10 x 7 or 11 x 7 3 bladed be appropriate for this and who makes these?

Darock you posted just as I did so I will add that I am going to use this .56 on a Hangar 9 P-51 pts or a nexstar. I know the motor is a bit big for the nexstar so I thought a 3 bladed prop would slow it down possibly.