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Old 08-11-2020, 10:31 AM   #1
LizardsA
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Default New generator field coils

Greetings all,
Forgive me if this has been asked before, but I couldn't find any answers by searching through the forums.
I am rebuilding a 1930 generator but "The Model A Generator Book" that I have been referring to doesn't show very clearly where the two wires from the field coils go. There is one wire without a lug on it - where does that go? Then the second wire with a lug on it, where does that go?

I have included some pictures that might help.
As always, your learned advice is most welcome!
Mike
Johannesburg, South Africa
Attached Images
File Type: jpg Brush holder end plate.jpg (54.0 KB, 31 views)
File Type: jpg New field coils.jpg (49.6 KB, 43 views)
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Old 08-11-2020, 10:46 AM   #2
ryanheacox
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Default Re: New generator field coils

The wire with no terminal end attaches to the generator case, there is a small countersunk screw through the side of the case. The red wire attaches to the 3rd brush (movable one).
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Old 08-11-2020, 10:56 AM   #3
LizardsA
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Default Re: New generator field coils

Hi Ryan, this generator casing has no holes other than the ones for the cutout switch and the mounting bracket underneath. Any suggestions for me please?
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Old 08-11-2020, 11:26 AM   #4
Purdy Swoft
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Default Re: New generator field coils

I drilled and tapped a hole in the casing to connect the wire .
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Old 08-11-2020, 11:57 AM   #5
LizardsA
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Default Re: New generator field coils

Thanks Purdy - begs the question: why was there no hole to start with?
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Old 08-11-2020, 12:17 PM   #6
ryanheacox
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Default Re: New generator field coils

Interesting but yep I see yours doesn't have that hole, it should be close to the 4 big access holes. All of the generators I've had my hands in have had a hole for that screw. If that's an aftermarket thing how were they done originally?
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Old 08-11-2020, 12:20 PM   #7
LizardsA
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Default Re: New generator field coils

Maybe the casing is from a - HEAVEN FORBID - "Chevy"?
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Old 08-11-2020, 12:43 PM   #8
Purdy Swoft
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Default Re: New generator field coils

Some of the generators grounded to the case , just under the hole in the generator housing that the post that connects to the cut out hooks up to .
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Old 08-11-2020, 12:48 PM   #9
Purdy Swoft
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Default Re: New generator field coils

The wire that grounded under the post had a lug with a large hole .
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Old 08-11-2020, 12:50 PM   #10
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Default Re: New generator field coils

Not all generator cases had a hole and screw mount for the grounded end of the wire. There would have been a large holed lug attached that went between the insulator's and case at the output screw. When replacing the field coils many just drill and counter sink a hole to install the grounded end wire. The counter sink being on the outside.
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