[Farmall] International A died (and I am baffled)

[ebony51 at frontiernet.net]

JIm,  I had to get a different set of points from the Case-IH dealer.  The parts man was surprised that the magneto was disconnected.  I suppose the magneto might have gone bad and whoever did the converion put on the external coil.  I suppose otherwise the alternator could have been connected with the battery and starter and the magneto could have been left separate to run the engine.

Out of curiousity I took the coil to the local electrical shop that works on starters, magnetors, etc.  The part man checked the numbers and it is a Delco Remy six volt coil without resister.  It said it does not make any difference.  He said coils cannot tell voltage.  

Ummm,  I thought a six volt coil would run hot if twelve volts fed into it.  I have the tractor several years and it is worked fine.  Now there is a solenoid ahead of it froming from the battery and starter.  Also, there is an external condenser connected where the kill switch is connected (and internal condenser in the magneto) to the magneto.  

Now, the points are (very) bad.  I will put them on later today and see what happens.  Rotor and cap looks fine.  So, maybe just bad points.  Hopefully, later in the day I will know.

Now, I checked and my Dad's Super C has been converted over.  It has the ceramic resister ahead of the normal (not automative add on coil) coil on top of the distributor.  It also has the oil pressure exciter (if I have the term correct) to activate the alternator.

I guess lots of different ways to do things.

Thanks much.

Larry 



  



----- Original Message -----
From: "Jim Becker" <jim.becker at verizon.net>
To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Sent: Wednesday, July 1, 2009 10:29:51 AM GMT -06:00 US/Canada Central
Subject: Re: [Farmall] International A died (and I am baffled)

Larry,
>From anything I have seen, there are 3 varieties of ignition coils, each 
should be labeled accordingly.
   6 volt - never uses a ballast resistor, wire from igniton switch straight 
to coil, another wire coil to distibutor.
   12 volt no ballast resistor required, wired same as 6 volt.
   12 volt ballast resistor required, wire from ignition switch to coil, 
another wire resistor to coil, third wire coil to distibutor.

Ballast resistors come in a variety of styles.  Any with only 2 electrical 
terminals will work fine.  For tractor use, I see no particular advantage to 
using a coil that requires an extenal ballast.

Jim Becker        jim.becker at verizon.net

----- Original Message ----- 
From: <ebony51 at frontiernet.net>
To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Sent: Wednesday, July 01, 2009 8:51 AM
Subject: Re: [Farmall] International A died (and I am baffled)

> I assume for a 6 volt coil, one needs a ballast resister before it.

> For a 12 volt coil, does it need a ballast resister after it so 12 volts 
> to not go to the points and burn them up?

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