Electrical System / Rotary Engine

Ed Anderson wrote:

Paul,
    I fly with the Mazda alternator with internal regulator.  I placed

amp circuit breaker in my field coil circuit to pull and disable the
alternator should it malfunction.  So far no malfunctions, but pulling

the

CB does disable the alternator output.

Ed Anderson

So it is not a true one wire alternator with the field fed internally?
What year is that Ed?

Paul Lamar

Ed Anderson wrote:


Correct, Paul.

    There is a wire that feeds the field coil (CB in this one), one that is
used for the idiot light, and the large one for the Output voltage, so

three

altogether.  Mine is a Bosch alternator  remanufactured  for the Mazda RX-7
1986 vintage. Thus far it has stood up well.

Ed Anderson

 This is exactly what I have on my LE, using a NipponDenso alt from an
85ish Honda Civic.  I feed it 12v for the field via my "ALT" half of my
master switch (Cessna type) thru a 2 amp fuse.  I, too, have verified that
I can shut off the alt in flight.  Also have a 60 amp CB in the output line,
and am using the idiot light connection for an idiot light (what else?).

Bill Freeman

   For all interested,
     Issue 46 of "Contact Magazine" has excellent article
on converting the Mitsubishi alternators commonly used
on 86-91 RX7(and perhaps 93+ RX7 and Cosmo 20B)to either
stock internal reg with external shutdown or external reg
and shutdown.The article also includes the same info for
some Nippondenso alternators.The Mitsubishi is said to
be the better design and easiest to convert.

   Kelly Troyer
--
Dyke Delta/13B Rotary Power


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