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#1 |
Senior Member
Join Date: Dec 2016
Location: Sunrise Beach, Mo
Posts: 439
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Was going through a junk box, dug out several ignition coils, and did some primary resistance checks. Two were Delco and one, an original 6 volt ford Coil off a model A. The resistance measurement of the Delco's was 1.35 ohms (externally marked as 12 volt coils) the Ford Coil measures 1.4 ohms, and is as mentioned, off a Model A Ford. It would appear These coils, if Used on a 6 volt system, as is, they would draw 4.2 to 4.4 amps static drain. What I have read off the web is 1.2 to 1.4 ohms is typical for a 6 volt coil. All I can determine is early Delco coils were actually 6 Volt and used the external resistor to adjust current to only allow 6 volts at the coil! Anyone else have any thoughts? Something I am missing?
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#2 |
Senior Member
Join Date: May 2010
Location: Southern Upstate New York
Posts: 1,163
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Your thinking is totally correct.
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AL in NY |
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#3 |
Senior Member
Join Date: Dec 2017
Location: Guthrie, OK
Posts: 1,158
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My 1957 Corvette (long gone, alas) had a coil resistor. I only know this because it went bad and I had to replace it. Wire wound, mounted on a ceramic block.
Would be good for a 12V conversion. |
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#4 |
Senior Member
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,109
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If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
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