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someone explain to me why overvoltage is needed for a permanent magnet
alternator. I thought they would be incapable of overvoltage since the
magnetic field is fixed.
Kevin Lane Portland, OR
e-mail-> n3773@comcast.net
web-> http://home.comcast.net/~n3773
(browse w/ internet explorer)
----- Original Message -----
From: "David Carter" <dcarter@datarecall.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, October 01, 2003 11:23 AM
Subject: [FlyRotary] PM Alternators was Re: [FlyRotary] Re: alternator
choice?
> Here's a summary of John Deere PM alternators:
>
> Output Amps Alternator P/N Regulator P/N Weight LBS
> Remarks
>
> 20 AM877557 AM101406 4
> 35 AM877957 AM101406 4
?
> Same device, with internal changes, Uses same Regulator
>
> 55 AL81436 AL65077
> ? Flat pack on back of alternator body Typically
> used on 6400L and 6500L Tractor, for running at night with lights.
> 85 AL81437 AL65077
> ? Has Overvoltage protection, same P/N as 55amp
> 85 AL78690 ?
> Listed for 6400 series tractor, NO overvoltage protection
>
> David Carter
>
> ----- Original Message -----
> From: "Marko Bewersdorff" <marko@bewersdorff.com>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Wednesday, October 01, 2003 12:07 PM
> Subject: [FlyRotary] Re: alternator choice?
>
>
> > I have one of those permanent magnet deals on my Vari Eze, sold by B&C
for
> > $$$ I keep hearing that they are of a Kubota tractor. Mine is only rated
> at
> > 14 A or there abouts so my night IFR is kinda like Apolo 13's return to
> > earth - don't need strobes - don't need the VOR for a little while, etc.
> > etc.
> >
> > Marko
> >
> > > -----Original Message-----
> > > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
> > > Behalf Of Lehanover@aol.com
> > >
> > > I saw a permanent magnet alternator on a formula Atlantic car and
> > > was told it
> > > was rated at 20 amps. It was from a big garden tractor of some
> > > kind. Smaller
> > > than your fist. Running off of a 1/4" wide V belt.
> > >
> > > Lynn E. Hanover
> > >
>
>
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html
>
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