Lately I have had a couple of request regarding a Bürk master clock ( Hauptuhr ) which were not covered in my previous posts, from a few years ago and I may as well put the info on the board so other clock minded people can benefit from it.
Also to keep this thread active; Other members please put in any questions and I try to help out if possible.
As said before, I have 5 of these Bürk clocks at home and three are in service on a pendulum synchroniser.
Short video is on YouTube which I will attach a link for.
-> posts merged by system <-
Question asked by Frank manning,
Hi Raymond,
I don't know if my NAWCC message board note got through and I did find your address.
I just purchased a Burk master clock movement. I have generally had the American master clocks and this one interested me. It is in need of a pendulum. Could you provide me a weight for the bob? Also, your picture of the suspension spring so I can make one. I could not read the dimensions of the picture you posted at one time.
Also, I believe it probably runs on 50hz 240 volts. Do you know of a possible source for a 60 to 50hz converter? Or, could I change the motor to a 60 hz synchronous motor? Then I would need to convert the voltage up to 240 with a transformer. Any comments you could provide sure would be appreciated.
I live in Connecticut, USA.
My reply:
Hi Frank,
I have been to busy with YouTube lately and havent visited NAWCC forum.
I prepare a few bits and pieces and check the pendulum weight.
pendulum bob 1064 grams
weight 412 grams
rod 112 grams M5 diameter
2 ferrules 30 grams which center the bob
rod length 64 cm
Your clock doesn't need an other motor as the accuracy of the clock is determined by the pendulum.
The 220 Volts motor will run on 240 Volts 60 Hz, only a bit 6/5 faster and should not be an issue.
The motor does the winding and drives the mercury contacts.
You will need a small 120 / 240 Volts transformer rated at 10VA will be enough. and perhaps put a 560 or 680 ohm 1 watt resistor in series with one lead to keep the winding not overvolted.
These Bürk clocks are great quality, I have 5 of them at home.
Kind regards
Raymond
The email I posted to you bounced back after a week. That is why I put this question up here.
Raymond
http://www.youtube.com/watch?v=BGYlDTiHspI
Also to keep this thread active; Other members please put in any questions and I try to help out if possible.
As said before, I have 5 of these Bürk clocks at home and three are in service on a pendulum synchroniser.
Short video is on YouTube which I will attach a link for.
-> posts merged by system <-
Question asked by Frank manning,
Hi Raymond,
I don't know if my NAWCC message board note got through and I did find your address.
I just purchased a Burk master clock movement. I have generally had the American master clocks and this one interested me. It is in need of a pendulum. Could you provide me a weight for the bob? Also, your picture of the suspension spring so I can make one. I could not read the dimensions of the picture you posted at one time.
Also, I believe it probably runs on 50hz 240 volts. Do you know of a possible source for a 60 to 50hz converter? Or, could I change the motor to a 60 hz synchronous motor? Then I would need to convert the voltage up to 240 with a transformer. Any comments you could provide sure would be appreciated.
I live in Connecticut, USA.
My reply:
Hi Frank,
I have been to busy with YouTube lately and havent visited NAWCC forum.
I prepare a few bits and pieces and check the pendulum weight.
pendulum bob 1064 grams
weight 412 grams
rod 112 grams M5 diameter
2 ferrules 30 grams which center the bob
rod length 64 cm
Your clock doesn't need an other motor as the accuracy of the clock is determined by the pendulum.
The 220 Volts motor will run on 240 Volts 60 Hz, only a bit 6/5 faster and should not be an issue.
The motor does the winding and drives the mercury contacts.
You will need a small 120 / 240 Volts transformer rated at 10VA will be enough. and perhaps put a 560 or 680 ohm 1 watt resistor in series with one lead to keep the winding not overvolted.
These Bürk clocks are great quality, I have 5 of them at home.
Kind regards
Raymond
The email I posted to you bounced back after a week. That is why I put this question up here.
Raymond
http://www.youtube.com/watch?v=BGYlDTiHspI
Last edited: