Re: [worldcruising] Folding and Feathering Props
Subject: Re: [worldcruising] Folding and Feathering Props
From: Doug Sterrett (dwsterrett@XXX.XXX)
Date: Wed Jan 24 2001 - 17:53:15 EST
Peter, I concur whole heartedly with your remarks about the Autoprop. One
of the better upgrades I've put on my Southern Cross 39. I got a tip from
Downwind Marine in San Diego about the zincs for my Autoprop: Drill a hole
(3/8" - 1/2") in the center of the zinc. This will allow the zinc to
corrode more evenly and will extend the life of the zinc without
sacrificing functionality. Also paint the inside of the bolt holes where
the shafts of the bolts would contact the zinc metal. This will prevent
the zinc from prematurely corroding where it is attached and falling
off. So says Downwind Marine and they sell a lot of these. I'll be doing
this to my zinc when I haul out this spring.
Regards;
Doug
At 11:24 AM 1/24/01 -0800, you wrote:
>Hi Bob and Denece
>
>I have an Autoprop on my Slocum 43, details are available from
>www.autoprop.com.
>
>As far as my personal experience is concerned after 18,500 miles, the prop
>gives me about 3/4 to 1 knot more speed when sailing, extra savings on my
>fuel bills by extended the cruising range by about 20%, definitely is a
>great help when going astern. Allows you to cruise at higher speeds with
>lower engine revs when motoring. You need only to grease the unit at every
>haul out, the pitch is set and the blades are always at the optimum angle.
>Should you purchase very accurate measurements are required, however
>Autoprop supply you with measurement sheets and they possibly have already
>fitted an Autoprop to a Nicholson 35, if so they may be able to put you in
>touch with an owner.
>
>If I can give you any further info please contact.
>
>Peter Arnold
>SY 'Neva'
>
>
>
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