63 Clock question
Thread Starter
Racer
Joined: Dec 2009
Posts: 347
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63 Clock question
After replacing the fuse on my '63, the clock started working! (So did the radio, but that is another issue). The problem is that the clock runs fast - it gains about 35 seconds per hour, almost 15 minutes per day. I have not pulled it out to see if there is an adjustment on the back. Before I do, does anyone know? Or should I just consider myself lucky that the thing ticks at all?
Thanks in advance for your help/advice.
Jon
Thanks in advance for your help/advice.
Jon
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Joined: Feb 2007
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C2 of Year Finalist (track prepared) 2019
Bill has given you good advice but he hasn't explained why it's good advice.
The '63 clock mechanism is built such that if it runs fast and you turn the time back, it will self-adjust to run a little slower. The opposite is also true..... if it runs slowly and you run the time forward the mechanism will sense this and self-adjust to run a little faster.
So, for now just reset the time to the correct value and see if the clock slows itself down by the proper amount. If not, repeat the process until it does.
Jim
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Brett Foote
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I wouldn't count on it.
To change the inherent frequency of the quartz crystal oscillator, you tweak a small value variable capacitor, usually in parallel with the crystal.
It's unlikely anyone has rigged up a mechanical gizmo that would automagically adjust the capacitor in response to adjusting the time.
Besides, the accuracy of the crystal oscillator is so good, there's be no need to tweak it.
Jim
To change the inherent frequency of the quartz crystal oscillator, you tweak a small value variable capacitor, usually in parallel with the crystal.
It's unlikely anyone has rigged up a mechanical gizmo that would automagically adjust the capacitor in response to adjusting the time.
Besides, the accuracy of the crystal oscillator is so good, there's be no need to tweak it.
Jim