Have been running the one rotor on p-port for a while. Aiming for 115hp per rotor on 12A housings at 7500RPM(be happy with 100hp in the end). These estimates should give 150hp for 13B housings, more likely 130, making 260 for a 13B. I know this is worse than other p-port proponents predict, but this is what I am working toward. If more power (over stock) is the issue, p-port is the solution, also simplicity. I have not found any real negatives, for air craft use, in it.

 

Richard Sohn
N-2071U

 

Richard,

Your findings confirm my estimates of between 115 to 130 hp for PP single 13B.  I was hoping for up to 150hp with the higher compression RX8 rotor - only time will tell I guess,

Keep up the good work!

George ( down under)