REFLECTOR: Fwd: Re: Alternator Repair

Tue Dec 9 21:34:54 CST 2014

Brian, 

I have had the generator on my C150, and the alternators on my Cherokees rebuilt by a guy down the road. He owned an automotive electric shop and was a pilot. The Old Cessna products were made by AC Delco.  The Piper products were made by Chrysler. He said the only difference between the aircraft & automotive versions, is that the charging lead was a threaded stud (instead of a plug in type), and the part number on the tag.  When he would rebuild aircraft ones, he always made sure those two things were on the unit, even if he replaced everything else. Had great luck with those units, and a cost of less than $100.00 each. 
The 65A alternator on my V is a Denso unit. 
I'm sure you can do better than what you have now. 

Best,  Kurt. 

Sent from my iPad

> On Dec 9, 2014, at 20:09, Brian Michalk via Reflector <reflector at tvbf.org> wrote:
> 
> 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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