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08-11-2020, 10:31 AM | #1 |
Senior Member
Join Date: Oct 2012
Location: Randburg, Johannesburg, South Africa
Posts: 225
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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 |
08-11-2020, 10:46 AM | #2 |
Senior Member
Join Date: Apr 2013
Location: Northwest CT
Posts: 1,092
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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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08-11-2020, 10:56 AM | #3 |
Senior Member
Join Date: Oct 2012
Location: Randburg, Johannesburg, South Africa
Posts: 225
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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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08-11-2020, 11:26 AM | #4 |
Senior Member
Join Date: May 2010
Location: Alabama
Posts: 8,099
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Re: New generator field coils
I drilled and tapped a hole in the casing to connect the wire .
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08-11-2020, 11:57 AM | #5 |
Senior Member
Join Date: Oct 2012
Location: Randburg, Johannesburg, South Africa
Posts: 225
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Re: New generator field coils
Thanks Purdy - begs the question: why was there no hole to start with?
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08-11-2020, 12:17 PM | #6 |
Senior Member
Join Date: Apr 2013
Location: Northwest CT
Posts: 1,092
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Re: New generator field coils
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08-11-2020, 12:20 PM | #7 |
Senior Member
Join Date: Oct 2012
Location: Randburg, Johannesburg, South Africa
Posts: 225
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Re: New generator field coils
Maybe the casing is from a - HEAVEN FORBID - "Chevy"?
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08-11-2020, 12:43 PM | #8 |
Senior Member
Join Date: May 2010
Location: Alabama
Posts: 8,099
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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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08-11-2020, 12:48 PM | #9 |
Senior Member
Join Date: May 2010
Location: Alabama
Posts: 8,099
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Re: New generator field coils
The wire that grounded under the post had a lug with a large hole .
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08-11-2020, 12:50 PM | #10 |
Senior Member
Join Date: May 2010
Location: Portland OR
Posts: 6,340
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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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