Da,
The 5X5.5 apc pitch seems to vary and isn't even close to a constant progression, kinda weird but it looks pretty mean.
So basically what your saying is that prop pitch is more of a guess than actual measurements made?

Hopefully in the near future I can get a good audio to get Doppler off of, without having play with it just to get some type of reading that's at least shows something. The guy doing the last video has a radar gun but couldn't find it that day, but he got a good video of the flight. After the first flight I was just as happy to get a video of the flight just in case something else came off or went wrong, thinking that it would give me some clue as to what failed.