Subject: Alternator
From: Rotary Engine
Date: 2/23/2007, 7:59 PM
To: AARotary Engine




    >>     Here is one for all the electrical specialists:
    >>     I have a alternator from '86-'88 RX7. The field is turned on
   by a
    >>     switch on the instr. panel. It works fine, except that when I
    >> turn
    >>     off the field while running, it does not stop the output of the
    >>     alternator. Looks like internally is wired to do that.
    >>     I don't like it not being able to cut the output. How can I
    >> fix it?
    >>     Thanks.
    >>     Buly
    >>
    >> I gave Paul a writeup on how to convert the stock alternator from
    >> IR to
    >> ER.  That's the only way to be able to collapse the field after
    >> startup.  Should be somewhere on his site, or I still have it if you
    >> need it.  Based on the stuff from Aeroelectric Connection.
    >>
    >> mark
    >>
    >> I would not know where to start to look :)
    >> --
    >> Paul Lamar ...No rotor no motor.
    >>
    >>
    > Here they are.
    >
    > Scott Gettings
    >
    >
    > --
    > Paul Lamar ...No rotor no motor.

    >

   Thanks Mark for the article and Scott for posting it again. My
   alternator has T like two spade connectors, but i assume inside is
   the same?
   Buly



Glad the article is useful to someone!  Alternators are pretty simple
beasts, so I would imagine a little time with a multi-tester could
ferret out any internal differences.  What are the connectors labelled?
If it is a B-L-S alternator design, then it should be very similar
inside.  If it is something else, then you'll have to do more snooping
around.

You could always do a google search on any part id number on the
alternator case & see if you can turn up the internal wiring diagram for
it.  That will tell you what would need to be changed.  In my case, I
had Bob N take a look at the diagram I found & he confirmed what needed
done before I lanuched off on the conversion.

With respect to Scott and Matt's comments, I agree.  That's why I did
not include ER hookup instructions -- a reading of the 'connection & a
little searching on their forum lays out all the options, pros & cons
better than I could.  FWIW I have both the crowbar and an external kill
switch just-in-case.

Mark



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