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
> >