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Author Topic: Assistance Please - Source & Help Needed to Replace Wood Gear Clock 110V Motor  (Read 4472 times)
markf
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« on: May 02, 2009, 10:12:45 pm »

I’m finally fixing this 110v-electric wood gear clock, circa 1980s, from Clockworks Inc. (Sun Prairie, Wisconsin).  Value: $100 -150.



The motor says it is a ‘Synchron”, and on its side is written: “630  110V 60CY  4W  30RPM  K180LA 6-3-82”.  It is about 2 inches in diameter by 1.5 inches tall.

I’ve got the gist of it – volts, 110 volts/60 cycles/4 watts and the build date – but the motor powers only the top of 4 wood gears, which is the ‘second hand’, ie, 1 RPM.  This gear 1 powers all the other gears – the minute/gear 2 and hour/gear 4, with an additional step down wood gear between those gears 2 and 4).

Question # 1 of 2:
I need to replace the electric motor and I was wondering if anyone knows a source.  I was googling but I’m not certain what I’m looking for.

Question # 2 of 2:
The motor says 30 RPM, but its output at its shaft turning the top gear (the ‘second hand’ / 60 seconds per revolution wood gear) is 1 RPM.  Is there some internal step down gearing inside the motor, or are they playing with my head when the motor casing reads 30 RPM but is outputting 1 RPM? 
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HAC
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« Reply #1 on: May 03, 2009, 02:35:40 am »

I'll ask my watchmaker on Monday, he does a lot of clock repairs.  I think that  the 110v stuff has been largely superceded by battery powered movements, but if anyone knows a source , it will be Al..

Cheers
Harold
« Last Edit: May 03, 2009, 04:24:19 pm by HAC » Logged

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markf
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« Reply #2 on: May 03, 2009, 02:48:18 pm »

Thanks HAC.  The clock & gears are solid wood, the whole thing probably weighs 20+ lbs, so perhaps that is why then went with an electric motor rather than batteries since although it is pretty finely balanced there's still a lot of wood hardware to turn, and 110-120V motors are high in torque.  markf
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HAC
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HAC_N800
« Reply #3 on: May 03, 2009, 04:29:24 pm »

Some digging suggests that "Synchron" might be made by Hansen Synchron .. Might be worth contacting them to see if they have paerts..

http://www.hansen-motor.com/clock-timing-devices.php

Cheers
Harold
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Zwack
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« Reply #4 on: May 03, 2009, 06:26:25 pm »

Based on their website it might well be a "Round Chart Drive" which would be one of their motors with a gear chain attached that takes it down to 1 RPM.

Z.
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clockdug
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« Reply #5 on: May 03, 2009, 10:09:59 pm »

Try here; page 36 top right hand movement.  That's a Hansen A-43RA that seems to match the stats on yours for $23.50 other than having a pinion attached. 
http://www.clock-keys.com/pdf/Categories/movements.pdf

Timesavers has always been very helpful to me; they may can give some more guidance if that movement isn't the right one.

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markf
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« Reply #6 on: May 04, 2009, 12:12:18 pm »

Ah, excellent.  HAC and Zwack, I sent an email with my photo to the section in the Hansen website on getting replacement motors, so I expect they'll come thru. And Clockdug your Clock-Keys website does indeed also have a very nice identical replacement motor, so that will work too. 

Now the only thing I now have to watch out for, which I only discovered yesterday (which I should have realized earlier, as in years earlier) was the top wood gear actually spins counterclockwise, so I need to make certain my replacement motor does the same.  So how did I make this brilliant deduction - by watching the top wood gear turn the 'wrong way' over the years?  Nooo..... one of our BG members read this thread and PM'd me this too pricey Ebay link with the same motor and the ad said it turns counterclockwise, then I realized, 'oh that's right, my 1st gear actually does run backwards'.  Doh!  markf 

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220396833405&fromMakeTrack=true&ssPageName=VIP:watchlink:top:us
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