RE: U-CAN-DO 3D Performance
With that engine I would be using the APC 13 x 6 for general sport flying and possibly some 3D, some guys like it for 3D on this size plane but I thought it had too much "bite" for my likes....
For all out 3D the APC 14 x 4W fun fly prop is king. I have a flying buddy that has one on a Saito .72 equipped UCD 46 and it muscles it around with authority.