In article , Mark says...

Does a prop turning at 2300 rpm on a 150hp motor produce more thrust than a
prop spinning 2300 rpm on a 100 hp motor ?

If it's the same prop and it turns 2300 on a 150 hp engine the 100hp engine
won't have the power to turn it 2300. If it turns 2300 on the 100 hp engine then
the 150 hp engine will over rev it and run away the prop. At 2300 rpm the prop
will produce the same thrust regardless of engine but the 150 hp engine would
really like a bigger prop to use the remaining 50 hp.

see ya Chuck (ain't no free ride in airplanes) S