Regula movement, cracked gear

Discussion in 'Clock Repair' started by josephus14, Jun 24, 2012.

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  1. josephus14

    josephus14 Registered User

    Jun 16, 2012
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    I posted earlier about my Regula 701 cuckoo clock movement. I could not seem to get the time train to run. After a close examination I found the cracked gear in the picture. It appears to be made of some sort of plastic or nylon. Is there any place to find or purchase gears such as this or am I simply out of luck? 100_1067.JPG
     
  2. Willie X

    Willie X Registered User

    Feb 9, 2008
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    This part is not generally available but you might want to check with the folks a BFI (Black Forrest Imports).

    Willie X
     
  3. bangster

    bangster Moderator
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    Jan 1, 2005
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    I believe it might be fixable. Mount it in a vise, ready to squeeze the crack shut. Fill the crack with medium super-glue. Immediately squeeze the crack shut as tight as you can without deforming the gear. Let it sit for an hour. Can't hurt. Might work.
     
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  4. David S

    David S Registered User
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    I am not sure if the tooth form is screwed up or not. I have had some success with doing what Bang suggested but I drilled a couple of holes on either side of the break and used wire to keep it tight.
     
  5. josephus14

    josephus14 Registered User

    Jun 16, 2012
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    Thanks for the input guys. I believe I'm going to try that. As near as I can tell the teeth are good.
     
  6. R&A

    R&A Registered User

    Oct 21, 2008
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    I've seen David's suggestion on brass gears that have cracked. A little primitive if you base it on today's standards. But it should work well on this type of repair on a plastic gear, with a little glue. There are guys in here that have hundreds of these lying around. maybe post a need in parts needed ??

    H/C
     
  7. shutterbug

    shutterbug Moderator
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    I'm not sure about the 701 series, but Timesavers sells the plastic wheel for the time train of the 25 series. It looks the same, and if the size and tooth count are correct it would work in yours too. Part # 20921 (or 20920 maybe).
     
  8. josephus14

    josephus14 Registered User

    Jun 16, 2012
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    Hey that does look close. Gonna go count some teeth!
     
  9. Willie X

    Willie X Registered User

    Feb 9, 2008
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    I have repaired and replaced quite a few of these cracked gears. If you attempt a repair be sure to carefully knock the plastic wheel off the shaft first. It will come off easily, mark it's correct position first using a three corner file. The main reason that it split is the large and constant amount of outward pressure exerted when the shaft was pressed into the plastic gear. I have found that, with the gear removed, the gear is easy to compress and superglue, wire and superglue, as already advised. But, after the glue has set for about 24 hours, lightly broach the hole in the gear until you get a snug interference fit and then superglue it on the shaft. Doing it this way will relieve the stress on the gear and you glue job will likely last a long time.

    Hope this helps, Willie X
     
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  10. bangster

    bangster Moderator
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    Pay attention to what Willie said.
     
  11. josephus14

    josephus14 Registered User

    Jun 16, 2012
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    Thanks for all of the useful input. The #20921 from Timesavers turned out to be exactly what I needed. I have her back together and it is working great.
     
  12. shutterbug

    shutterbug Moderator
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    :thumb: Good to know for future inquiries too!
     

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