prop vs. sailboat prop

[Brian2]

Does anybody know the difference between a sailboat prop and a regular prop? Currently I have a 3 blade 13 x 10 prop and will be getting a new prop, and one person mentione a sailboat prop, and another person said standard prop is what they sell 99% of the time, even to sailboats. Anyone have pictures of the two?

Brian2

[rorik]

Scroll down the first link to MaineSail's excellent, as usual, discussion of props.

http://www.cruisersforum.com/forums/f13 ... 32868.html

WestbyNorth sells the "Campbell Sailor".
GetaProp sells the "Michigan Sailor".


http://www.westbynorth.com/

http://www.getaprop.com/content-categor ... llers.html


http://www.pbase.com/mainecruising/image/117606170.jpg

[Terry]

When I replaced my ancient evinrude with a Tohatsu Sailpro last fall, the hp remained the same but the performance I received is incredibly better. The difference is the additional thrust provided by the prop. It's all in the pitch of the prop blades. As I understand it, a high thrust prop, like the SailPro has, is sorta like the additional torque of lower gears in a truck going up a hill: not great on high speed, but superior in pulling power.

Read the articles, though, which are good references and explanations.

All the best,

Terry

[fenixrises]

Hi all,

The basic difference between a sailing prop and a powerboat prop is this:

Take the diameter of the prop.
Use it to make a circle.
There is an area to that circle.
Pi X radius squared.
This is known as the swept area.
A powerboat prop covers more of the area described by the circle.
A sailing prop covers less area.
Generally a prop is described by the percentage of swept area that the blades occupy. i.e. 30% would mean the blades cover 30% of the swept area. This is generally the amount used by a three blade sailor prop.
Simple, no?

Take care,
Fred

[Jerry Hammernik]

Brian2

I'm currently discussing the purchase of Campbell Sailor prop with them. They have been very helpful. What engine and transmission do you have?

[Brian2]

Hello,

I am having the Beta 14 with TMC-40 trans installed. I ordered the Capmbell yesterday.

[Jerry Hammernik]

Ordered mine yesterday too. Let's hope they work well.