REFLECTOR: Fwd: Re: Alternator Repair

[Jeff Barnes via Reflector]

The cooling fins might be reversed to accomodate AV rotation.



________________________________
 From: Brian Michalk via Reflector <reflector at tvbf.org>
To: Laurence Coen <lwcoen at hotmail.com>; Velocity Aircraft Owners and Builders list <reflector at tvbf.org> 
Sent: Tuesday, December 9, 2014 9:09 PM
Subject: Re: REFLECTOR: Fwd: Re: Alternator Repair
 


Thanks.  That sounds about my speed.

I disassembled the NAPI alternator, and honestly can't tell the
    difference from this PMA alternator vs an automotive version. 
    Perhaps the rotor is balanced, but that alone should not be an
    issue.





On 12/09/2014 10:58 AM, Laurence Coen via Reflector wrote:

Brian,
 
I have a Mazda B 2000 alternator on my Franklin that has been trouble free.  I think it is rated at 55A and has an internal regulator.
 
Larry Coen
N136LC ( sold yesterday)


From: Brian Michalk via Reflector 
Sent: Monday, December 08, 2014 12:27 PM
To: Velocity Aircraft Owners and Builders list ; Main Forum 
Cc: napi at att.net 
Subject: REFLECTOR: Fwd: Re: Alternator Repair

Hmmph.

I bought two 60 amp alternators from National Air Parts, many
      years ago, spending more than $500 (per alternator).  I even
      bought two of these, thinking I was buying reliability.

It was chronically under voltage with the stock voltage regulator,
      never producing more than 13 volts.  I emailed them about this,
      and they said that was within design.  So, I replaced the voltage
      regulator with an off the shelf replacement that fits perfectly. 
      I flew around with it, and decided to upgrade my spare alternator
      too.  I removed the cover and found that a stator lead had burned
      through where it is held down by a screw.

In my opinion, this is not a difficult problem to fix, I think I
      could even do it myself, but I'd rather pay to have it done
      properly.  I spent a premium on a real alternator, then they come
      back with a response like this?

This is poor customer support, and is uncalled for.  Just letting
      everyone else out there know about how they treat their customers.



-------- Original Message -------- 
Subject: Re: Alternator Repair 
Date: Sun, 7 Dec 2014 23:02:42 -0500 
From: Alfred Petrone <napi at att.net> 
To: Brian Michalk <michalk at awpi.com> 


Unit was discontinued years ago. Sorry no service available. Sent from my iPad > On Dec 7, 2014, at 9:48 PM, Brian Michalk <michalk at awpi.com> wrote:
> 
> I have an old alternator with about 50 hours tach time.  I actually have two of them, and retrofitted my spare with a voltage sensing regulator.  I was going to do the same to this one, and opened up the back to find that one of the winding leads burned through.
> 
> Is it possible to repair this alternator?
> 
> <IMG_20141207_203352.jpg>
> <IMG_20141207_203716.jpg> 


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