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April 6, 2016 at 7:05 am #49783khoward279Participant
Good morning all,
I have a sessions mantle clock im working on and no matter what I do it runs fast. I cleaned the movement, installed 4 bushings, installed a new mainspring on the strike side, the spring on the time side seemed fine and not set. On an 8 day movement i was told to use a thinner feather on the suspension spring. this helped some but it still runs an hour fast in 24 hours. I have tried every possible combination with the pendulum and bob i can find and moved the time regulator all the way to slow and got it to 25 min fast. I am not giving up but any help would be appreciated. I was wondering if the escapement wheel is to small? it has 48 teeth.
Thanks KevinApril 6, 2016 at 12:17 pm #63710aruthaParticipant
was the original suspension spring missing or did you just replace it with a thinner one to try and regulate it? If you did was it the same length as the original as if it was shorter this would have the same effect as raising the pendulum Bob? How is the escapement action, if it looks like the teeth are tripping through the pallets quickly you may have the depthing wrong, this would also show itself by the pendulum having a very short arc?
Paul.April 6, 2016 at 5:35 pm #63711bernie weishaplParticipant
Paul is right. If you have the room I would lengthen the suspension unit about a 1/2″ to 1″ with the lighter feather. Make sure your adjustment is centered on the movement. Then you can shorten the whole unit. I am thinking maybe a 1/2″ would put you about where you want it.April 7, 2016 at 10:01 am #63712khoward279Participant
Thanks for the sugestions. When i recieved the clock i was handed a bag with the key and a broken suspension spring and the bob. I made a new one as close to the original as possible, I used a .003 feather and the wire is + or – a 1/16″ on the length. I do have a question, how do you evenly change the depth on the verge? I think its called a strip deadbeat? Thanks again Bernie and Paul, always great help.
KevinApril 7, 2016 at 5:26 pm #63713bernie weishaplParticipant
A picture of the verge and it’s pivot point would help. Make it a lot easier to give you advice. If it is a older clock the verge is probably on a pin which is mounted in a brass piece. You can tap this piece closer to the escape wheel just a slight bit at a time. You will have to put it in beat each time because it changes the angle of the pallet faces to the escape wheel teeth. Anyway as I said a picture or two would help.April 8, 2016 at 7:43 am #63714aruthaParticipant
Bernie is more of an expert on these movements than I am, the guy knows his stuff so I would go with his suggestions and as he says, a picture would be helpful.
Paul.June 8, 2016 at 8:47 am #63715its timeParticipant
Was you able to get your clock working right?
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