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1906 Pancake Terminal Plate  Rate Topic 
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 Posted: Thu Mar 26th, 2020 12:36 am
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Tristan Crider
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I have a 1906 cake with a metal terminal that shorts out no matter what I do.. Is there more insulation than whats shown here on this picture from Antiquefanparts.com? I have had plastic plate on there for the last couple years but decided to give it another go.. Fan shorts out while OFF. What am I doing wrong here? Brand new insulators for the brass pieces which are now toast. I have a heavy coat of insulator varnish on the plate as well. Works fine with any other terminal that's not metal.. Why would they switch to metal anyway...  :wondering: :violin: :violin:



Last edited on Thu Mar 26th, 2020 12:37 am by Tristan Crider

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 Posted: Thu Mar 26th, 2020 09:04 am
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Lane Shirey
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Are you certain that it’s actually the terminal that’s shorting out and not some other component? 
With power off, I’d attach an ohmmeter lead to a shiny spot on the chassis and then use the other probe to test components to see if you can find any areas with continuity.  

You can also check from the neutral to various components.  It might not be the terminal unless you’ve seen evidence of an arc on it. 

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 Posted: Thu Mar 26th, 2020 01:41 pm
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Kim Frank
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On one of those terminals, a short wire goes to the off position on the switch. From the other terminal, one of the headwires goes to the back of the motor. The other headwire attaches from the high position on the switch to the other terminal on the back of the motor. The power cord attaches to the other side of the terminal plate. The stator reading should be somewhere around 27 ohms +/-.


On the terminal plate, make sure the bakelite insulators are intact and that the mica insulators are too. Check the insulation on the stator to make sure it isn't in contact with the motor housing. Other than that, I can't think of anything else causing a short, unless you had Steve Stephens help you wire it...…….

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 Posted: Thu Mar 26th, 2020 03:39 pm
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Tristan Crider
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Thanks guys I'll go over it again. I have it wired exactly as described. It works for about 5 mins then shorts out whether on or off. I've wired up 3 other cakes with no problems.. I've installed a plate from an 03 cake for now so I can run the fan. The fan only has one fishpaper insulator intact. When I touch one probe to the coil cover screw and one probe to the motor house acorn nut I get continuity... This shouldn't happen I'm guessing. Could it be the fishpaper missing?  

Last edited on Thu Mar 26th, 2020 04:57 pm by Tristan Crider

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