Author Topic: Reversing Drum Switch  (Read 337 times)

Steve_Furby

Reversing Drum Switch
« on: August 11, 2022, 06:21:43 PM »
Does any one have any pictures of a Furnas Drum Switch. It is on a Southbend 9C. I think it is the same as a Furnas R44. I took pictures before I took it apart but I accidentally erased all of my pictures on my phone. I am looking for the positions of the copper tabs for Reverse, Neutral and Forward. Many thanks, Steve.

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34_40

Re: Reversing Drum Switch
« Reply #1 on: August 12, 2022, 08:02:31 AM »
try this link..I "googled"  furnas drum switch wires  https://duckduckgo.com/?q=furnas+drum+switch+wiring+diagram&t=chromentp&ia=web
You may need to copy the text and paste it into your browser address field.
Clausing 108, Clausing 8520, Atlas Horizontal, Lincoln stick and mig welders

Steve_Furby

Re: Reversing Drum Switch
« Reply #2 on: August 12, 2022, 12:20:50 PM »
Thank you, those are great links but I've seen them. What I need though is actual pictures of the inside copper positions in forward, neutral and reverse. Again, thank you for responding. Steve

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RayH

Re: Reversing Drum Switch
« Reply #3 on: August 12, 2022, 01:19:57 PM »
Please clarify, are you asking for a wiring diagram or did you disassemble the switch and need help putting it back together properly?

Ray

Steve_Furby

Re: Reversing Drum Switch
« Reply #4 on: August 12, 2022, 01:38:37 PM »
Disassembled, I accidentally deleted the pictures I took of each pole position.

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34_40

Re: Reversing Drum Switch
« Reply #5 on: August 12, 2022, 02:58:12 PM »
Clausing 108, Clausing 8520, Atlas Horizontal, Lincoln stick and mig welders

34_40

Re: Reversing Drum Switch
« Reply #6 on: August 12, 2022, 03:09:36 PM »
How about this?   https://www.youtube.com/watch?v=NxAvGjm6D2M   
And there are more on youtube..
Clausing 108, Clausing 8520, Atlas Horizontal, Lincoln stick and mig welders

Steve_Furby

Re: Reversing Drum Switch
« Reply #7 on: August 12, 2022, 05:29:39 PM »
Thanks for your help. The first link helps. It looks like mine has been modified. The first copper bus bar is reversed to mine. I saw the second one already, if I could just see the other 2 positions. I'll make a new bus bar to match the picture. I am searching google for more pictures but I haven't found anything yet. Thanks again, Steve

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Carpenter84

Re: Reversing Drum Switch
« Reply #8 on: August 12, 2022, 06:06:31 PM »
I replaced a drum switch on my lathe once (the hi/off/low speed selector). I took one look at the number of poles on it and promptly filed it under G... No way I have the time or tenacity to figure out the contact pads... They're not that expensive...
Shawn

Steve_Furby

Re: Reversing Drum Switch
« Reply #9 on: August 14, 2022, 07:30:21 PM »
You are probably right.

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