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Hamilton 941 21 jewel "Click" to Login or Register 
posted
Just did a clean and oil, replaced the mainspring put it on my pro 1000 to adjust it and the ticks are all over the place, it keeps time has great, rotation, anybody give some Ideas what to look for. I know something not right, but what. Dwayne
 
Posts: 22 | Location: Mitchell, Illinois in the USA | Registered: January 27, 2013
IHC Life Member
Picture of Larry Lamphier
posted
Dwayne, I'm a long way from knowing everything that it could be, but I have found that when that happens if I demagnetize it that it helps a lot.

Regards,
Larry
 
Posts: 2733 | Location: Northeastern United States | Registered: February 28, 2010
IHC Life Member
Picture of David Abbe
posted
Check the grounding and connectors on your pro1000
 
Posts: 6492 | Location: Southern California in the USA | Registered: July 19, 2007
posted
I have a Bunn that cks fine on the pro 1000 I don't think thats it, but thanks for the suggestion. Dwayne
 
Posts: 22 | Location: Mitchell, Illinois in the USA | Registered: January 27, 2013
Picture of Richard Romero
posted
Dwayne,

Sometimes when doing a COA and installing a new mainspring the rotation of the balance goes too far. If the mainspring is too strong the watch will knock because the roller jewel is coming around and hitting which makes the timing machine do strange things. If the watch isn’t knocking but is coming close it often helps to lower the volume then the machine will start registering. It may be helpful to unwind the watch and put it on the machine with light mainspring tension then gradually increase the wind.

Good luck,

RR
 
Posts: 1413 | Location: Fremont, California in the USA | Registered: February 06, 2010
IHC Life Member
Picture of David Abbe
posted
If there is an audio feed from the PRO1000, do a subjective comparative "play" between the Bunn that does fine and this one. You might be able to "hear" the issue.

Richard's suggestion addresses this issue from an equally important, but slightly different direction. As the lower power, especially where you watch has a going barrel design for the mainspinrg could show a substantially more stable movement.

My Machine uses an AGC circuit that kicks in as soon as the first cyclic sounds are picked up but you can manually over-ride that if it goes nuts with widely varying amplitudes of sound pressure in the watch and have a better chance at getting a decent reading through the "Thicket" of noise that sometimes prevails in pillar plate movements.

Also, check the beat error to see if that is unstable. That would suggest some things that there is not enough space to address here.
 
Posts: 6492 | Location: Southern California in the USA | Registered: July 19, 2007
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