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                           AeroElectric-List Digest Archive
                                      ---
                     Total Messages Posted Fri 01/22/21: 3
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Today's Message Index:
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     1. 03:51 PM - Re: Zeftronics Regulator Connection Question  (farmrjohn)
     2. 05:16 PM - Re: Re: Zeftronics Regulator Connection Question  (Robert L. Nuckolls, III)
     3. 06:32 PM - Re: Antenna Ground Planes  (AdventureD)
 
 
 
________________________________  Message 1  _____________________________________


Time: 03:51:58 PM PST US
Subject: AeroElectric-List: Re: Zeftronics Regulator Connection Question
From: "farmrjohn" <faithvineyard@yahoo.com>


Based on the lack of replies I'll go with "if it ain't broke, don't fix it" as
it seems to be working OK.  John


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=500380#500380


________________________________  Message 2  _____________________________________


Time: 05:16:47 PM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: Re: AeroElectric-List: Re: Zeftronics Regulator Connection   Question

At 05:51 PM 1/22/2021, you wrote:

I have a Zeftronics R15100 voltage regulator that has the following 
terminals: I-A-S-F.
Only three terminals have wires connected to them, I-A-F. For low or 
high voltage indication
it looks like an Electronics International VA-1 voltmeter is used. 
Everything seems
to be working (system shows 14.1 volts when engine running, 
alternator on), should
I move the I lead to the S terminal?

   Man! You got me! That regulator is FAA-PMA replacement
   for the stock 'ford' regulators common to single engine,
   14v Cessnas for probably over a decade. That regulator
   is featured in my Z-Figures and written about in the
   'Connection'. Attached is a page excerpted from a Cessna
   maintenance manual on single engine airplanes.

   Clearly, the wiring depicted is consistent with
   our understanding of how that regulator works.

   Why your regulator appears to be working is a mystery.
   It's sound logic to not mess with a working
   system . . . but . . . I would sure like to
   understand why it is working.

   Having said that, we also know that while
   certain after-market, plug-n-play 'ford'
   regulators are not form-fit-and-function
   in a Cessna. I tried to replace a failed
   regulator in a C-172XP rental and was treated
   with an overvoltage condition when I turned
   the alternator on. I don't recall details of
   the variation but clearly, risks for differences
   were not zero.

   This Zeftronics device includes extra features
   (diagnostics) not part of the generic 'ford'
   regulator.

https://tinyurl.com/y6le6gdo

   There may be other nuances not
   obvious to us . . . but I'm mystified as to
   how/why your system appears to be functional.
   Perhaps a call to Zeftronics?


   Bob . . .

   Un impeachable logic: George Carlin asked, "If black boxes
   survive crashes, why don't they make the whole airplane
   out of that stuff?"

________________________________  Message 3  _____________________________________


Time: 06:32:11 PM PST US
Subject: AeroElectric-List: Re: Antenna Ground Planes
From: "AdventureD" <dobrien@microfoundations.com>


Thank you Bob, Joe, all, for all this advice.  Happy and safe flying, Dan


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=500383#500383


 

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