Removing & Installing Open Mainsprings

Comments · 40

• TM

  @tmackinator · 13 years ago

  Thanks to your inspiration, I was able to completely disassemble my nice ST89L, swap the short hand spindle for a long spindle from the old mechanism I needed for my cymbal clock, reassemble and correct a constant running chime side after assembly. The clock is running great now and chiming nicely. I'm going to install the short spindle in the old worn mechanism after I install all the new bushings needed. Thanks once again for your great video work-TM

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• JE

  @JeffersonClockWorks · 13 years ago

  A mainspring cannot be patched. It is evenly tempered throughout its length and any repair in the middle will not last and is very dangerous. On either end, the spring is softened to allow it to conform to the extreme shapes and holes needed for attachment points.<br>If the outside end, hole or loop &nbsp;is broken, the spring can be shortened a couple of inches. 4 to 5 inches Softened with a torch, then the end is formed into a loop and riveted or a hole is cut and filed to remove sharp edges.

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• RO

  @rocketaroo · 10 years ago

  thanks to your vid, I released my first mainspring today, thanks

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• JE

  @JeffersonClockWorks · 13 years ago

  I use Light or Medium Keystone mainspring oil for mainsprings and Great Wheel pivots, <br>I use Nye Clock Oil for pivots, or Synthetic 5 weight. I&apos;ve also tried mobile one 5 weight with good success<br>Al

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• 27

  @2721milesoneoneman · 10 years ago

  Sounds very wise! &nbsp;thank you very much!

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• DA

  @Dakotadarkwolf · 10 years ago

  This video helped me out greatly! Thank you for teaching me to do mainsprings.

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• CH

  @chimesofatimegoneby · 13 years ago

  Very interesting informative video, thank you.

• JE

  @JeffersonClockWorks · 13 years ago

  Your Welcome, <br>If you want to test if a movement will run at the end of the mainspring wind, only wind it 1/2 to 1 full wind. A clean, bushed and polished pivot clock should easily run on that amount of power. <br>Al

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• DI

  @dianabattersby1467 · 13 years ago

  Very informative. &nbsp;Thanks for the help. &nbsp;:))<br>

• LO

  @lowescottage · 12 years ago

  Usefull, helpfull many thanks.

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• JE

  @JeffersonClockWorks · 13 years ago

  OldTimerGuy58<br>I don&apos;t think a hydraulic lock is an issue because the problem would get worse as time goes on.<br>A possibility could be that the pivots and/or pivot holes were not completely cleaned and polished. The new oil slowly melts the old oil and things start to run free er.

• JE

  @JeffersonClockWorks · 13 years ago

  Your Welcome, thanks for watching!! <br>Al