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Wires from winding - Missing wire on winding
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Offline johnhendry  
#1 Posted : 07 April 2025 02:19:24(UTC)
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johnhendry

United States   
Joined: 06/11/2024(UTC)
Posts: 52
Location: Georgia, Atlanta
Guys, we’re restoring another old 3000 and I can find only one wire coming out of the winding at the back. Is there a way to either find or cut something for the reverse power line?
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Offline JohnjeanB  
#2 Posted : 07 April 2025 12:40:13(UTC)
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JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 3,550
Location: Paris, France
Hi John
In these "C'shaped" inductors there are
- 2 soldering points on the coil (to go to yje direction relay)
- 2 enameled wires coming out of the core of the coil (not the periphery) Those are wired to the adjacent brush nearby.

If the 2 latter wires are broken EITHER you may find a minimal length to solder a repair wire OR you need to change the inductor.
Attention: depending on the fabrication year the motor is either a SFCM (before 1981 or so) or a DCM They are not interchangeable but easy to find as a left-over or a digital conversion.
Cheers
Jean
My layout videos
latest vid
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Offline johnhendry  
#3 Posted : 07 April 2025 15:57:20(UTC)
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johnhendry

United States   
Joined: 06/11/2024(UTC)
Posts: 52
Location: Georgia, Atlanta
Thank you, Jean! Yes, it's a SFCM type motor. I have the "double" wire going to the bush. I also have ONE of the two directional wires but I can't find the other one coming out anywhere. I guess I just need to gently work around and see if I can find it hiding in the coil somewhere.
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Offline RudiC  
#4 Posted : 07 April 2025 18:04:24(UTC)
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RudiC

Germany   
Joined: 28/01/2024(UTC)
Posts: 59
Location: Nordrhein-Westfalen, Aachen
If you are talking of the stator coil, there should be three wires (of which one is a wire pair). If that's not the case, you need to un- and rewind the coil(s), or a new stator.
Regards,
Rüdiger (Rudi)
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thanks 1 user liked this useful post by RudiC
Offline johnhendry  
#5 Posted : 07 April 2025 18:14:30(UTC)
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johnhendry

United States   
Joined: 06/11/2024(UTC)
Posts: 52
Location: Georgia, Atlanta
Yes, I'm talking about the stator coil. Okay, I'm going to see if I can gently unwind it to find the third wire. Thank you!
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thanks 1 user liked this useful post by johnhendry
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