[AJD] GP magneto - Fairbanks morse type FM J on GP

Sat Mar 8 06:04:23 PST 2008

With the wind-up impulse on the FM J and all but the earliest tractor mags
the correct spark delay for starting (and not kicking) is built into the
magneto so there's no need to retard the spark and then advance it again.

Come to think about it, why was there an adjustment on the early Splitdorf D
mags?  They had an impulse so that provided some level of spark retardation.
Maybe that was just back in the days when the operator was supposed to set
the timing depending upon the load?  I know my Model T Ford is all manual
with the timing, it's right on the steering column.  And it is helpful to
tweak the timing as driving conditions change.  I've never actually used a D
or GP with one of those earlier mags installed.

B²

Bill Brueck
   Chatfield, Minnesota, USA

Confusion is a higher state of knowledge than ignorance.

-----Original Message-----
From: antique-johndeere-bounces at lists.antique-tractor.com
[mailto:antique-johndeere-bounces at lists.antique-tractor.com] On Behalf Of
kreig
Sent: Friday, March 07, 2008 12:44 PM
To: Antique John Deere mailing list
Subject: [AJD] GP magneto - Fairbanks morse type FM J on GP

Ok, Ok, Ok, so I really do know how to start a GP.  I never did get around
to reading the owners manual on how to start which has now raised my
awareness level.

The manual says i need to adjust the spark for starting and running, however
there is no spark advance on my tractor. Obviously the original magento was
replaced with a Fairbanks Morse type FM - J.  there are no external
adjustments on this magneto and the GP has pretty much run ok in the past.

So what does anyone know about the Fairbanks morse type FM  J??

Thanks again for your replies.

Kreig

Fairbanks morse type FM  J
----- Original Message -----
From: "Michael Ostrander" <antiquejd at fwi.com>
To: "'Antique John Deere mailing list'" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Thursday, March 06, 2008 8:22 PM
Subject: Re: [AJD] GP cooling system

> Kreig-
> Saw one with a farmer/fisherman fix.  They took the rubber plug out of the
> back of a rowboat and used that instead of the real pipe plug.  Sure must
> have made things easy to open and close.
>
> -----Original Message-----
> From: antique-johndeere-bounces at lists.antique-tractor.com
> [mailto:antique-johndeere-bounces at lists.antique-tractor.com] On Behalf Of
> kreig
> Sent: Thursday, March 06, 2008 9:01 PM
> To: Antique John Deere mailing list
> Subject: Re: [AJD] GP cooling system
>
>
> Thanks Michael
>
> Sad to say the GP sat out all winter, just no room anywhere for cover.
> Started it up yesterday and ran very poorly.  cleaned the sparkplugs, new
> gas, and still not runnign well, seemed like it was starving for gas
> sometimes.  Bowl and filter clean.  Then it seemed to be running "hot" so
> shut it down and checked the radiator, DRY!!!!!!!   So much for my
> springtime starting routine!!!!!  I dont think there were ever any leaks 
> in
> the system and trying to think when I checked it last season.
>
> So tomorrow i will fill with mixed antifreeze and run it up again.
>
> I was not even thinking about touching that front drain plug, looks like a
> BIG problem if ever loosened up.
>
> Kreig
>
>
>
>
>
>
>
>
> ----- Original Message ----- 
> From: "Michael Ostrander" <antiquejd at fwi.com>
> To: "'Antique John Deere mailing list'"
> <antique-johndeere at lists.antique-tractor.com>
> Sent: Thursday, March 06, 2008 5:24 PM
> Subject: Re: [AJD] GP cooling system
>
>
>> Good Evening Kreig-
>> The plug that you mention on the front of the bottom tank of the radiator
>> is
>> indeed where it should drain from.  They are often rusted badly and leak.
>> I
>> have had several drilled out and weld in a pipe coupling so I can put the
>> pipe plug back in.  If you don't want to mess with the plug, you can also
>> loosen the hose clamps on the rubber hose that connects the radiator to
>> the
>> bottom of the head.  A little twist on the hose and generally the water
>> will
>> come out slowly or if you twist enough that you create an opening, it 
>> will
>> empty rather quickly.  I cant say I have paid much attention to the
>> capacity
>> of the cooling system.  I keep mixed antifreeze around to fill tractors
>> and
>> just use what I need.  Hope this helps, good luck.
>>
>> -----Original Message-----
>> From: antique-johndeere-bounces at lists.antique-tractor.com
>> [mailto:antique-johndeere-bounces at lists.antique-tractor.com] On Behalf Of
>> kreig
>> Sent: Thursday, March 06, 2008 6:58 PM
>> To: Antique John Deere mailing list
>> Subject: [AJD] GP cooling system
>>
>>
>> I have owners/operator manual for 1930 GP.
>>
>> Cant find any mention of the size of the cooling system.
>>
>> Also where is the plug for draining?  I see one plug centered on the 
>> front
>> side of the radiator and not sure if it would ever actually open.
>>
>> Thanks for any responses.
>>
>> Kreig
>>
>>
>>
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