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Problem With My Pancake  Rate Topic 
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 Posted: Wed Jul 11th, 2018 04:45 am
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Richard Daugird
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Just got a 1900 12" G.E. Pancake today. Not sure what's wrong so I figured I'd ask the experts. I did the typical "new to me" prcedures when I got the fan, oiled it up(oil cup was empty, wick was pretty dry, so in addition to filling the cup, I put a few drops under the top screw that holds the bearing), and put it on a Kill-A-Watt before running it. Pulled 1.58 amps on start, took a log time, over 30 seconds, to get to full speed, at which pulled 1.2 amp. Made some rubbing noise, I'm thinking The blade is rubbing or the new looking fiber washer needs to wear in. Spin-down time is less than 10 seconds. Fiddled with the blade. Tried it and let it rest several times, also using a laser thermometer, not getting hot, not pulling high amps. I figured once the oil started flowing well to the bearing, it would get better. Now it doesn't want to start on it's own. A few more rests, check oil and temps, now it won't get to full speed, stays at 1.55 amps. Didn't run it long for fear of damage, but tried several times with same result. This is not a cheap eBay fan, came from a respectable collector who just happened to not run the fan much, if at all. Is there some simple thing I could be overlooking?

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 Posted: Wed Jul 11th, 2018 10:57 am
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Lane Shirey
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Hi Richard, I'm sure the cake experts will help out as well, but these have only a single bearing and the rotor shaft play front to rear is determined by how far you have the blade onto the rotor shaft. On mine, to get that spacing just right I had to use a screwdriver inserted into the rear of the motor to push the rotor into the bearing fully so I could get the proper spacing between the blade and bearing on the front of the fan. Is it possible that you have the blade pushed on the rotor shaft too snugly?
Also, I'd not reuse the old felt wicks. Often when you add oil, even if you clean them, the new oil will rejuvenate the hardened oil and make a sticky mess that can slow a motor. That would generally not make a rubbing sound however. 

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 Posted: Wed Jul 11th, 2018 12:08 pm
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Kim Frank
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I'd take the rear cover off first and then run the fan. That will tell you a lot. See if the rotor is rubbing anywhere on the stator. If it is, shim the stator to center the rotor. After that, like Lane said, a new felt wick is good. Shipping can do strange things to pancakes. Also make sure it is centered front to rear. Usually one or two red fiber washers will do the trick. Leave just a bit of end play. Try that and then we can go from there..........Also, see what ohms the stator is reading...25 - 27 is good.

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 Posted: Wed Jul 11th, 2018 02:14 pm
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Richard Daugird
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Thanks guys, what you both said makes sense. I have taken apart pancakes with the switch in the base, but not one of these. Anything special I need to do?

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 Posted: Wed Jul 11th, 2018 02:42 pm
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David Kilnapp
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Rich: Would you mind sending me a PM for what you paid for the cake? I'm looking at buying one now and I'm not sure what I should offer.

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 Posted: Wed Jul 11th, 2018 02:53 pm
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Kim Frank
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Richard Daugird wrote:  Anything special I need to do?You'll have to unsolder one tap from the motor to the switch and undo the other tap at the binding post.

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 Posted: Wed Jul 11th, 2018 03:00 pm
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Richard Daugird
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I'm not too good with a soldering iron...I may get Stan to help me on this one.

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 Posted: Wed Jul 11th, 2018 05:03 pm
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Richard Daugird
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I haven't done anything yet, but I did try it a couple time just now, started on it's own and came up to full speed. It now comes up to full speed in 22 seconds, half of what it did yesterday, and spins down in 12 seconds instead of 9. Running cool and quiet at 1.12 amps. Maybe the oil soaking overnight helped? Or maybe the problem will return if the fan runs a while and gets warm. It didn't get very warm yesterday, about 10* C over room temp. I will change the wick regardless, but want to avoid soldering, etc. 

The rear cover is 90* off; the terminals are at 9 o'clock instead of 6 o'clock. Do I have to re-solder to correct that?

Last edited on Wed Jul 11th, 2018 05:37 pm by Richard Daugird

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 Posted: Wed Jul 11th, 2018 08:23 pm
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Richard Daugird
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Pancake is running great. I let it sit until dead cool, now it's only 15 seconds to reach full speed. I think it just needed to be run a while.

:clap:

Last edited on Wed Jul 11th, 2018 08:24 pm by Richard Daugird

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 Posted: Wed Jul 11th, 2018 11:56 pm
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Lane Shirey
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As I said earlier Richard. I’ll send you free wicks with your fan shipment. Just need to let me know the wick OD or maybe Kim would be so kind to check in with the OD. I think they’re the same ones as the GE brass bell AOUs but not certain. 

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 Posted: Thu Jul 12th, 2018 01:15 am
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Richard Daugird
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Thanks Lane!

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 Posted: Thu Jul 12th, 2018 12:29 pm
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Kim Frank
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3/16ths inch felt wick.




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 Posted: Fri Jul 13th, 2018 01:03 am
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Lane Shirey
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Thanks Kim , I’ll hook Richard up with some! 

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