Don Casey - Dragged Aboard Storm Tactics Handbook:
Modern Methods of Heaving-To for Survival in Extreme Conditions
by Lin Pardey and Larry Pardey


      

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[world-cruising] car alternators

From: KenJames (no email)
Date: Sat Jul 09 2005 - 14:28:32 EDT

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    What I mean by saying it is the wrong curve is this; it doesn't matter
    if you rewind it to produce more power at slower speeds, the problem is
    still inherent in the design that if you make it produce good power at
    one speed, it will not do so at other, in this case slightly slower,
    speeds.
    This is a well recognized problem with earlier wind genearator designs,
    and is one reason you do not see them using car alternators. In wind
    that pushes my boat 5 kts my wind generator can put out a lot more
    than 15 amps, so a water towed one should be able to also and still do
    good at 2 kts and 6 kts. But not with a car alternator, rewound or not,
    the power curve cannot be made to match the available power.-Ken

     
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