I've put up several flights with the 12x6 APC EP f2b prop(cut to 11.5x6) and so far the rpm setting has gone from 9030rpm on the old style 12x6(cut to 11.5x6)to 8520 rpm! Motor power out % went down to 69%, it was in the high 80's.Battery consumption went down as well. It was a very windy day(20+mph wind)therefore I was unable to nail the exact rpm my Legacy 40 likes. After I'm thru with my tests I will add my findings to the "List your setup" thread. I haven't made any changes to the ESC settings yet but only time will tell.
 Dennis thanks again for bringing this prop to market .

Out trying a few props the other evening, including the new APC 12 x 6 EP F2B.  First couple of flights with the older style APC 12 x 6 EP.  9278 RPM produced a fairly consistent 5.3 second lap. Felt quite good, nice corner, although with some choppy wind, the overhead tension was adequate, but not great, especially in the Hourglass. 

Next three flights was with the new F2B prop.  I did not adjust the RPM for the first try.  Yikes, 4.8 second lap.  Right arm is now 2 inches longer than the left...  Slowed motor to 8844 for next flight (figure about 1/10 second per 100 RPM), which brought in around 5.2 second laps.  Like the older 12 x 6, the corner felt good, but with the wind gusting and variable, it did not feel strong overhead at all.

Next flight was with an APC 13 x 5.5 EP, running at 9278 RPM. Wow, the corners are still fine, but the overhead tension was "way" better! 12 x 6 EP and 12 x 6 EP F2B are back in the prop box.  Always fun trying new things looking for the miracle cure, but unfortunately, in my case a least, it does not appear the F2B prop is the answer.

Being Canadian though, and never wanting to start a fight, I would suggest others at least five the new prop a try, as it may very well work for them.   . I will likely try it again, but in calmer conditions.

Any chance of getting a 13-4.5 F2B prop that goes the other way?  Making the mold should be easy.

Any chance of getting a 13-4.5 F2B prop that goes the other way?  Making the mold should be easy.

Me running the 13 x 4.5 EP at approx. 10'000 RPM has occasionally led to a bit of prop noise in tight corners. When using the 13 x 5.5 EP at 9'500, this type of noise has gone away.
As the debate whether to use tractors or pushers with our current airplanes seems to be still open, I would appreciate to have access to a tractor version of the 13 x 5.5 E

kind regards, Peter

Just flew 4 flights today,winds 10 mph or less. 2 flights with the APCep f2b and 2 flights with the APCep. All data given here was taken with 5.25sec. laps during the wingover.
 The APCep f2b a@ 8670 rpm pulled 27 amps, 427 watts, 89% power output using 1908 mah from the battery.
 The APCep @ 9030 rpm pulled 29.3 amps, 424 watts, 97.4% power output using 2050 mah from the battery.
I gotta try this on a windy day to see if the f2b still has authority in the overhead 8. I find this hard to believe, usually nothing is free without a tradeoff. But I have a prop now that will use less battery on a calm day when power consumption is usually highest.