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Old 19-02-2014, 19:50   #1
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Propellers

We've just purchased a 2005 40 foot FP Lavezzi 30hp Yanmars would like to order new Volvo folding props but don't know any specs. Can anyone help?
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Old 20-02-2014, 06:32   #2
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Re: Propellers

I believe that boat originally spec'd 17x11 Volvo 3-blade folders.

Mark
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Old 20-02-2014, 07:01   #3
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Re: Propellers

I own a copy of "The Sailor's Assistant" by John Vigor (I highly recommend this book) so I can size the prop for you.
Let me know the propeller shaft speed (or the engine rpm and reduction gear ratio) and the horsepower (which you said was 30). That will get you the diameter.
For pitch I then need to know your top sped in statute mph. I can convert knots to mph if you only know knots.
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Old 20-02-2014, 07:14   #4
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Re: Propellers

17x12 VP 3 blade Folding is the way to go with 30hp.
This may help.
Sail Drives and Props
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Old 20-02-2014, 18:39   #5
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Re: Propellers

If you plan to live aboard and cruise extensively, and are not strictly conscientious about weight, go with the 11" pitch. Otherwise, go with the 12" pitch.

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Old 20-02-2014, 19:25   #6
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Re: Propellers

I am selling a 16LH13-2 Flexofold here:http://www.cruisersforum.com/forums/...ve-119653.html

It worked perfectly on my Edel 43 with 3GMF30's delivering 3500 RPM at full chat and great ahead and astern performance. You would still have to buy the other prop but would be many dollars ahead of a pair of three-blade props. The reason that I only have one is that I was unaware of the need to use a new prop securing allen bolt with every prop changeout and well...

Forum member SMJ owned the Edel before me and will verify that the prop performed well if you are interested.

-Mark
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