APC props generally work well or better than the same size wood props.  However, they are heavy. A B-40 in a Smoothie seems to be plenty of power but watch the balance with the heavy APC!

Floyd

Allen; When I finished my Sig Super Chipmonk (51.5 oz and a B40) I was using a Master Airscrew 11/6, and was happy with the performance. I don't remember why I decided to try an RSM 10/6, (oh yes I do, my brother gave me one) but did. A huge leap in performance. I think the 11/6 was overloading the engine; the 10/6 removed some load and allowed the B40 to give me a much better 4/2 break. Since then I've tried a Vess 10/6 and an old Top flite paddle blade 10/6. The Top flite gave very similar performance to the RSM, buyt the Vess didn't put enough load on the engine and I had to run the engine about 800 rpm faster and lost the great 4-2 break.

Brian