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Pitch Your Own Prop with strips.

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Old 01-10-2012, 07:27 PM
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Talking Pitch Your Own Prop with strips.

Came across this, website says 50 Knots plus. Looks like it would just hurt top speed. Add a strip and lose rpm???

http://www.motorboating.com/maintena...d=enewsh011012

http://www.veem.com.au/props_profile.php
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Old 01-10-2012, 08:22 PM
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It's not as bad as you would think, although I doubt that it would be efficient for high-speed/surfacing applications where it is important for the prop to act like a wing. When an abrupt edge like that is added underwater, the (incompressable) water tends to stall against it and create a ramp effect. Volvo Penta has capitalized on this effect with their vertical trim blades for cruisers.
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Old 01-10-2012, 08:44 PM
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that looks like the little strips i use in my weed eater
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Old 01-11-2012, 06:56 AM
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Quote:
Originally Posted by glassdave View Post
that looks like the little strips i use in my weed eater
Sure, pick on us poor outboard guys again!
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Old 01-11-2012, 01:20 PM
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It's a means to change the cup of the propeller more so than the pitch.

They claim it works, but I was more concerned with the life span of the blade as they mill a slot in it for these strips to go into. I don't see it making the propeller stronger with the milled slot. It is like a whicker bill on the car wings Chuck, they can change them quite quickly in/out of water.
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