AeroElectric-List Digest Archive

Tue 05/26/15


Total Messages Posted: 1



Today's Message Index:
----------------------
 
     1. 09:16 AM - Re: Ford Voltage Regulator vs Solid state (Robert L. Nuckolls, III)
 
 
 


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    Time: 09:16:35 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: 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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