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Farmall & IHC Tractors Discussion Forum
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distributor or magneto?

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bitbythebug

01-09-2006 20:14:17




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I am currently restoring a 42'M. It has MW live hydraulics and a distributor that is mounted vertically on a ninety-degree-angle gear box. My step-brother has a 44'M, and his distributor is pointed straight back (horizontal mounted). Same as my step-fathers Super M. The question I have is, has my 'M been converted to distributor? If not, when did they quit equipping them with magneto's, or was ignition type always an option.
Thanx again,
Dan

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NDS

01-10-2006 06:18:25




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 Re: distributor or magneto? in reply to bitbythebug, 01-09-2006 20:14:17  
The vertical distribitors are Delco aftermarket. On some of the live pumps vertical distribitor was required because distribitor cap would not clear oil filter with horizonal distribitor.



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shoo_giesty

01-09-2006 21:32:33




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 Re: distributor or magneto? in reply to bitbythebug, 01-09-2006 20:14:17  
the verticle distributor are used when you have a mounted corn picker. its a lot easier to access the points.



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P Backus

01-09-2006 21:22:12




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 Re: distributor or magneto? in reply to bitbythebug, 01-09-2006 20:14:17  
Battery ignition from the factory wasn"t available until at least "52, I can never remember exactly. All Hs and Ms had the H-4 magneto from the factory.
Paul



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Andy Martin

01-10-2006 03:51:52




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 Re: distributor or magneto? in reply to P Backus, 01-09-2006 21:22:12  
I find this to be real surprising.

I thought battery ignition and lights were available from the first 1939 models and magnetos were available through at least the '50's.

I still prefer a magneto.



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Nat 2

01-10-2006 05:20:28




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 Re: distributor or magneto? in reply to Andy Martin, 01-10-2006 03:51:52  
Magnetos were standard equipment on all non-Super letter series tractors, and even on some of the earlier Super As and Super Cs, if the timeline holds true.

Battery ignition was always an aftermarket add-on, a kit IH sold through the dealer if you wanted a "modern" ignition system. Supposedly the battery ignition was better, but other than being simpler and easier to maintain, battery ignition is inferior at what it was designed to do. A good magneto creates a way hotter spark.

Both M's in question here came with magnetos as standard equipment.

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captaink

01-10-2006 06:03:20




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 Re: distributor or magneto? in reply to Nat 2, 01-10-2006 05:20:28  
I think one of the main selling points for the distributor was the fact that the impulse was not needed to retard the spark for starting. I realize that most of these probably came from the factory with starters (or “self-commencers” as my dad used to say) on them eliminating the hand crank most of the time. But, there was still the concern about hand cranking and that impulse not tripping correctly causing a kick-back and possibly injuring someone.

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RustyFarmall

01-10-2006 05:19:17




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 Re: distributor or magneto? in reply to Andy Martin, 01-10-2006 03:51:52  
Andy, a battery, generator, and starter were available from the factory in '39. You could also order up a "lights only" package, which included the lights and a sort of generator, but without a battery. Even with the factory starter and lights, the ignition was still a magneto.



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Bob/Ont

01-09-2006 20:32:17




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 Re: distributor or magneto? in reply to bitbythebug, 01-09-2006 20:14:17  
Likely after 1945 when batteries where more plentifull



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Bob

01-09-2006 20:30:12




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 Re: distributor or magneto? in reply to bitbythebug, 01-09-2006 20:14:17  
Your vertical Delco distributor is an aftemarket unit sold by the dealer, or a jobber.



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