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To: flyrotary@lancaironline.net
Date: Fri, 9 Sep 2005 09:28:38 -0400
Subject: Re: [FlyRotary] Re: Overvoltage control (help Ed A)
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From: WALTER B KERR <jbker@juno.com>


On Fri, 9 Sep 2005 07:34:45 -0500 "Mark R Steitle"
<mark.steitle@austin.utexas.edu> writes:
> Jim,
> I first explored this issue after Bob Knuckols expressed a dislike 
> of
> internally regulated alternators...because they can fail in such a 
> way
> that you cannot shut them down.  Yes, you can interrupt the "B" 
> lead,
> but this will not shut down the alternator.  I imagine it could get 
> hot
> enough to self-destruct and possibly catch fire. 
============================================
Mark,

The self destruct fire item is the only reason that I see to go beyond
interrupting the B lead.

Interesting my ND alterator does shut down when I shut the power field
off and it is internally regulated. I thought that was normal, but there
were potential internal failures that could trigger the runaway
alternator and then I would not be able to shut it down. Is that confused
thinking or why am I able to shut it down while running?

Bernie 
> 
>