I put my JXF 22x8 back on to slow the engine a little (or so I thought) The JXF (and Xoar) are really high load props. I have not tached it but the static rpm is WAY down. The sound at wot on the ground is dramatically different. I have not tached it but I lost a lot of rpm. So if your looking for high static tach numbers don't get a JXF or a Xoar. But the prop is awesome. It seems to have a higher effective pitch than the PT Planes 22x8n. The plane doesn't slow to a crawl for landings with the JXF but it's slow enough, just different than the PT.
Contrary to what I would think, the JXF actually punches out of a hover better than the PT did. This makes no sense to me as the PT obviously spools up faster. I guess the JXF just produces so much more thrust at low rpm, the thrust is right there when you hit it, no need to spool up. So you have to fly a prop and see how it works. Static rpm just tells you if your prop is too little load, or too much load. But too much load for my combo would be under 6600 static. a 20 pound plane would want something in the low to mid 7's
Here is a video of mine with the PT (and no wheel pants at the time, they are on now)
It's not the worst RC video I've seen, but it's not the best either.
http://rcuvideos.com/item/CVS3MDX5X4QLBWYG
http://video.google.com/videoplay?do...54916657265025
Most of the flying is idle to 2/5 throttle(minus 20% expo), I stab it once on takoff about 3/4 and back off in the turn, and I go wot on one upline where I go in slow, wait till it stops climbing, then hammer it.
Scott Gaines