All,
I am trying to find, with no luck, a video I saw on the comparison of at least two props, could have been more, where they put different props on a C180 or C185 (I think) and tied the aircraft to a vehicle with a load cell and measured the static thrust. My googlefu and my Youtube search Fu has failed me and I am buggered if I can find it. I think the video was pre-COVID times but I can't for the life of me find it. I did have an idea that it was Kevin Quinn, but I am not so sure (I have searched through all his vids but can't find it). For some reason I seem to recall the pre/post prop change static thrust went from something like 900-ish pounds to 1200-ish pounds, but I could well be significantly mistaken.

Any help very much appreciated.

Cheers
CB

This video may be useful. Fun to watch.
I really like my Mac401(Pponk O-520, C-180)

So Hartzell 165'
Mac 140'
MT 145'

IMHO close enough that a bit more or less wind,
or the pilot being a bit more on his game for one takeoff vs another,
could account for the difference.

FWIW that is Steve Knopp's airplane, I assume with Steve flying it,
at Steve Knopp's home strip.

Is this what you’re referring to? It’s pretty old and not a video though. Also not Hartzell props. Basically nothing that you said but in a similar vein

https://backcountrypilot.org/forum/mt-3 ... 6?start=20