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                           AeroElectric-List Digest Archive
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                     Total Messages Posted Tue 05/26/15: 1
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Today's Message Index:
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     1. 09:16 AM - Re: Ford Voltage Regulator vs Solid state  (Robert L. Nuckolls, III)
 
 
 
________________________________  Message 1  _____________________________________


Time: 09:16:35 AM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: Re: AeroElectric-List: Ford Voltage Regulator vs Solid state

At 04:09 PM 5/21/2015, you wrote:
>
> >> is this $180 unit really that much better than the $25 legacy Ford unit?
>
>My experience in my Cessna is that the modern automotive units go into a
>voltage runaway if the overvoltage unit trips, or you turn off the
>alternator side of the master switch. Bad thing. The only way to recover is
>to shut down the engine, thereby stopping alternator power generation.
>That's not practical in the air.
>
>Paul

    There's a reason for this phenomenon. It has roots in
    the aviation adaptation of the legacy Ford regulators onto
    aircraft. We had a discussion about this a few years back.
    The attached .pdf is a snapshot of that discussion.

    Bottom line is that the Ford style regulators are good
    and useful device when wired as shown in the 'Connection
    and the pages of this List. However, one should not
    emulate the manner in which Cessna adapted this regulator
    to their production aircraft. It was a good thing while
    the regulators retained their original form-fit-function
    but as the solid state replacements adapted to brand-and-
    model-unique automotive products, their ability to function
    in a Cessna was compromised.


   Bob . . . 

 

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