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rodabod

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rodabod last won the day on January 7

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About rodabod

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  1. What JDM says. I seem to repeat this a lot, but: you are more likely to have issues at the faster end of the gear train (including the balance/escapement) as there is considerably less torque at this end. It's a common assumption of beginner that mainsprings should be a likely cause of stopping a watch. Unless they are broken or slipping, this is unlikely to be the case.
  2. Hi Michael, It's possible that the hairspring stud or index pins could have moved as these use the Etachron system which is seen on some modern watches. Basically, the parts are moveable: I would be aware of this before manipulating the hairspring. And also accept that hairspring work is not trivial. Might be best to get a new one just now, but your other problem is that these aren't as simple to fit to the balance cock as older designs (where you simply tighten the hairspring stud with a screw). In answer to your other question, the pallet fork does not need to be matched to the balance.
  3. Open "boot" on index pins. Loosen stud screw. Remove balance. Remove two screws on underside of balance cock to remove cap jewel. Oil drop should cover around 50% of the cap jewel. Refer to BHI document.
  4. The way it's sitting in the photos, the terminal curve doesn't look good.
  5. The AF Swiss ones are perfectly good. Far more important is the quality of the tips and keeping them well dressed.
  6. Hi, my friend Antoine sells them here: https://www.mwrforum.net/forums/showthread.php?80698-SWEEPS-SECOND-FRICTION-SPRING-FOR-THE-JLC-CAL-450
  7. I think Moebius must have learned to sell snake oil before moving onto horological oils. The only possibility I can think of is where natural oils oxidise and turn acidic.
  8. I often observe the balance wheel oscillating without the pallets to get an idea of freedom of movement. You could try the same and compare vertical with horizontal. Helps to take the escapement out of the equation.
  9. Check for the hairspring rubbing as suggested.
  10. Also check that the barrel lid is not domed, as this obviously reduces diameter.
  11. If you own a lathe then you could spread some of the material (preferably in a vice rather than punching) and then turn it concentric if need be. Has the barrel or barrel rebate been stretched or worn? It can happen when a spring suddenly breaks. On larger clocks this can even shatter the barrel wall (been there).
  12. To do a train count (apologies if you know this already), you just need to know the tooth and pinion counts of each wheel from the centre wheel onwards. From there you can calculate how many beats are required to make the centre wheel turn once (ie. one hour).
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