In general, there is a lot of Black Art in props.
To use a car as an analogy:
In a fast car, its it not just the engine, but the transmission, differential, wheels and tires that all play a part.
In a boat, the prop takes the place of the Trans, Diff, Wheels and Tires.
With the many roles, there is a lot that goes into it.
In general, the Aluminum CNC props are a cheap place to start, but a ABC prop of the same dimeter and pich will take a boat faster, Its probally some combination of magterial fles and prop design.
Something that confused me at first: Prop lift. What makes a prop a Lifting Prop?
The primary design attribute is Rake, or the trailing edge angle of a surface piercing prop. Increasing rake angle tightens the thrust cone.
Since 1/2 of the prop is out of the water at any given time, a tighter thrust cone will lift less, and and also be more efficient.
Some hull designs, like Riggers without ski's need prop lift to raise the read out of the water.
user SweetAcord had a great album of props
https://forums.offshoreelectrics.com...hp?albumid=991
Cheetah, Super Rio, (Mod) Starship (Mod and sold),
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