telechron Master Type B

T

telechron.com

I have a Telechron B type master clock that I need to repair/replace the rotor. Since this clock is a bit difficult to work with I was wondering if someone could tell me in advance what to expect when I take out the current rotor. For example, will the mainspring unwind when I remove the rotor (I don't have the winding key)? Does someone know the exact rotor model? Does it have a gear on it? I'd like to take the "B" down and replace the rotor in one step and then get the rotor repaired. I have several rotors on hand that I could potentially use as a replacement. Any help would be appreciated.

Pictures of the "B" are online at http://www.telechron.com/telechron_b.html
 
T

telechron.com

I have a Telechron B type master clock that I need to repair/replace the rotor. Since this clock is a bit difficult to work with I was wondering if someone could tell me in advance what to expect when I take out the current rotor. For example, will the mainspring unwind when I remove the rotor (I don't have the winding key)? Does someone know the exact rotor model? Does it have a gear on it? I'd like to take the "B" down and replace the rotor in one step and then get the rotor repaired. I have several rotors on hand that I could potentially use as a replacement. Any help would be appreciated.

Pictures of the "B" are online at http://www.telechron.com/telechron_b.html
 

gre406

Registered User
Oct 6, 2001
611
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0
Telechron....use the "Find" button above and look at the previous postings on "master clock B". The rotor is the 1 rpm type B. Its been awhile but I seem to remember that the shaft is plain and the large gear is fastened to it by a screw..the spring will unwind when you remove the rotor. The key is a standard size 6 or 7. This is a little tricky movement as one part runs in two directions. Take a few photos or notes before taking it apart...Let us know how you make out.....
 
T

telechron.com

I took apart the Telechron B and here is what I found:
1. You don't need to take the movement apart to take out the motor. It unscrews from the front (two screws holding in a small platform) and can be dropped down to the pendulum area. I took out the movement before realizing this.
2. The rotor is a "B" type 1 RPM with a gear that screws on. The shaft is solid.
3. I replaced the rotor with a quiet rotor from another clock.
4. The only problem I had was that the main gear wheel has some play in it and it took some time to make sure the two gears were meshing properly.
5. The mainspring will not unwind when you take out the motor. It turns out it is pretty well balanced especially in a horizontal position.
6. Just in case you've never dealt with one of these clocks before, the pendulum suspension spring is screwed onto the pendulum shaft. Don't try to unhook it, you'll break the suspension spring.

Thanks for your help. Clock is up and running.
 

gre406

Registered User
Oct 6, 2001
611
0
0
Telechron.....good to hear....its been 3 or 4 years since I had one of these so your notes are good for future reference.....

Now the trick is to keep that "big" hand on Zero.

Good luck......
 

RickThomes

NAWCC Member
Sep 24, 2004
341
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16
Marietta, Ga
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Hello Telechron.com

Weclome to the message board, you will find some very intersting facts and your contributions are apperciated.

I also have had to deal with a Telechron B and found that I had to be carefull since I had to replace a broken spring aftern someone left it pluged in after the pendulum had stopped and it continued to wind. They are very intersting clocks and can be great time keepers.

Hope to see more of your postings in the future.
 

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