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View Full Version : Prop talk questions and info please.



Lenny
09-26-2008, 10:10 AM
I need to know, (not definatively, but close) what aspects of prop design exhibit/contribute to certain ride attitudes. Or point me in the general diresction.

What does "Rake" contribute to and/or enhance/diminish?
What does "Cup" contribute to or enhance/diminish?
What does "Diameter" contribute to or enhance/diminish?
What does "Blade area" contribute to or enhance/diminish?

What attribute emphasizes to "Bow lift" ?
What attribute emphasizes "Stern lift"?
What attribute emphasizes "Stern drop"?
What is attributed to "high mid-range cruise? (low slip I know, but...)
What makes a prop "bite" better than another given the same depth in the water?

Can someone "quote" this and fill in the blanks as best as possible so I can put this up on my wall and use it for future reference. I can't seem to grasp this.

Anyone ? :)

smokediver
09-26-2008, 11:15 AM
Rake will raise the bow as it squats the stern down ,
Nuetral rake will raise the stern
Cup will give you a little extra bite when trimmed out
Blade area is what it is
More horsepower , more diameter .. Will lower your slip ratio ie more blade area
I bet your boat with the ss and the stern jack would respond well to a rev4 ...kinda like a mini bravo but with a more rake . I bet a 23 or a labbed 25 would put a big grin on your face !!:yes: