In both cases, the efficiency in terms of kilos thrust / cv engine is an important factor.
Very little research is done on the propellers of small planes
It's a bit of a let go at the discretion of small manufacturers
some great MaCCauley, Sensenich, Hartzel for the variables
then all the wood and composite propellers, which is a small market..Just look at the serial numbers on MaC Cauley since the 50s to see that it is not millions of propellers produced there. are still 5 digits.
I wouldn't want to disappoint you, but the thrust measurement on a propeller is not indicative of performance on an airplane
it only gives us a static indication.
Very rarely propeller manufacturers use this method of measurement on propellers, I also work in this field.
For example, a ULM pilot who came to the field with Rotax 80hp ULM and a scale, to make comparisons
with my Lycoming 140 hp engine and large propeller.
on the test with the scale attached it had more traction than the Lycoming ..
Then take off side by side, he only accelerated faster
but after 300 meters I lost it in the fog autand to climb, (1400 feet / minute) the speed we are not talking about almost double.
The bottom line is that a low pitch propeller gives more static traction on a scale, while a high pitch propeller becomes effective when the plane has picked up a certain speed.
the efficiency of a propeller is measured when cruising when it gives the least possible slip.
André44