More fodder
The combo pitch approach,allowed the mfgr to start with a thinner blank of wood which saves munney.
From a strength standpoint it leaves a lot to be desired.
Being a snoopy person - I once tried to figure out the relationship of power to thrust and how prop types and pitch affected this relationship.
My thrust stand obviously only gives results of a non moving vehicle.
My fiddlin around showed that watts n thrust were directly related.
the prop shape and sizes meant very little- ok, nuthin.
To restate:
"if'n the motor/engine produces x power, the thrust will also be x
So 2x power should make 2x thrust . and it does
Don't throw any text books at me I am no good at math and can barely read.
try the experiment yourself.
Why should this work?
Because the prop is simply a load and the load and power to turn the load are directly related. again - don't believe it?
try the experiment
The test would work on a moving vehicle but my test bench won't fly.
The windy tunnel results will give results too.
obviously
the prop efficiencies will show up but basically to go faster -just stuff in more power.
On my electrics -this imakes it easy to figure power.
Just measure watts.
Mamma nature will give you the answers.
PS the test stand was my design from a few years back since then someone elsemade it commercially availble! It is a handy gadget and really quite accurate with electric motors.
It will not work with IC engines as power output is measured by prop load.
The cart n horsy thing.

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