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Farmall & IHC Tractors Discussion Forum
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MAgnetos?? still having problems??

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t.r.y.

01-28-2006 04:50:53




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I found that my points, condenser terminal, All have continuity to ground Why?? I found the cause of why everything was ground. the ground strip on the coil. When you bend it away from the housing nothing has conitnutiy to ground which is what we what because you shut mags down my grounding then right.????? ? thanks




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MagMan

01-28-2006 05:24:31




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 Re: MAgnetos?? still having problems?? in reply to t.r.y., 01-28-2006 04:50:53  
You just dont understand how a mag works > Thats why most people threw them away in the 50s. That is suposed to happen the mag actually works on a ground system. When the internal rotor spins on an H4 that is your magnet it sends a lets call it a charge through that tang you are talking aboutThat tang is internally hooked with a lot of copper windings to the wire that goes to the condenser on the other side . Witch inturn switches to thousands of tiny wires that are smaller than your hair wound around and go up to the nub that makes contact to the cap. These tiny tiny wires corode in side and break and that causes the dead coil usally. But My best info is If you put the ohm meter on the coil at the 0 mega ohms setting and hook one wire to the tang or the wire that comes out and the other to the nub on the top you need to get 9.7 or higher if not your coil is bad and needs to be replaced that simple. If you want to send me the coil I will press a new one for you. JON

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Nebraska Cowman

01-28-2006 05:13:50




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 Re: MAgnetos?? still having problems?? in reply to t.r.y., 01-28-2006 04:50:53  
Somebody tell me if I am wrong but when the points are closed they are supposed to be to ground? Right? When the points open that is when the spark results. Thats why they are called "breaker" points and not "closure" points.



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Bob

01-28-2006 11:10:31




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 Re: MAgnetos?? still having problems?? in reply to Nebraska Cowman, 01-28-2006 05:13:50  
What he doesn't understand is that even with the points open, the relatively low resistance of the magneto's primary coil is still across the points, giving the appearance that something is sharted.



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