Guys, I'm not quite sure that "stalled prop" is correct terminology. I
think "slippage" might be more approprite. I don't think that there
something unusual happening, other than the prop is trying to push (and
pull in) more air than is available in a static position. It's similar to a
slipping clutch that finally stops slipping when the car speed matches the
engine speed. The prop is just running at a very low efficiency when
standing still.

I believe Ed's new engine is making more hp than the old one, and thus, is
able to spin the prop at a higher rpm. As was suggested, he should watch
his t/o roll rpms to see if it goes up, or drop off a little. I had a
similar problem in that I had to throttle back on t/o, or risk
overreving/overboosting because the prop was slipping a lot. When he's
flying he will be able to tell if he needs a different prop (more pitch,
etc). You'd only change the prop now if your rpms are too low which would
indicate too much pitch/too little hp.

Chuck Harbert

 
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