SB630 Resto Numechron Clock

Charles W Morehouse w4gbw at BELLSOUTH.NET
Tue Apr 10 16:51:38 EDT 2007

Have rebuilt that clock in mine.  Even took the motor apart and put in 
new windings.  Look for worn bushings
and you may have to use shims or brass washers to align the wheels.  
There are no parts.  The relay was bad so used a mercury plate relay,
spst so used 12 v relays to do the job.  Had to build a 12v supply from 
the 6,3v/  Works great and is very accurate.  Also replaced the buzzer 
with a 12v chime.  Nice.

hudlerb1 at wrote:

>Hi All,
>Collecting and assembling the dream SB Line station from the early 70's.
>The newest project is an SB630 tube type station console. I've got everything on this console working great, except the clock.
>Any parts available for this mechanical device? 
>The only problem I have with it is the hour wheel advances more than one at a time occasionally, throwing off the hour display from actual time. I've tried adjusting the detent spring till I'm blue in the face, it is quite bent up and that's more than likely the original problem. I see the 10's wheel drag a bit too much  on the hour wheel, maybe something else is worn?
>Any experience and advice for this clock is appreciated.
>73's Bruce
>This list is a public service of the City of Tempe, Arizona
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