Author Topic: Time Set Gearing  (Read 47 times)

jon.ing@verizon.net

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Time Set Gearing
« on: November 05, 2019, 10:01:05 PM »
Daylight Savings Day in the fall used to be one one of my favorite days of the year.  Who doesn't like getting a free hour of sleep.   Now, however, I own over 70 wonderful Telechrons, all of which need to be turned back.  This is a bit of a chore because although some of my clocks don't mind being turned backwards, a few others do. That means advancing the hands 23 hours.  In those cases I have noticed that my 1930's and 40's clock will turn a full hour with just a couple of turns. The 50's clocks seem to need many more turns to advance one hour.  Does anyone know if there was a conscious decision by the Telechron engineers to change the gear ratio of the time setting mechanism? 

Cyclometer

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Re: Time Set Gearing
« Reply #1 on: November 06, 2019, 08:28:14 PM »
I'm going to take a guess here and say it has to do with the rotor. On clocks with B rotors, the output was 1RPM, so the gearing in the clock is different than later clocks with H rotors that output 3.6RPM. I noticed that my H rotor clocks take more turn to set the time than B rotor clocks.

 

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