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Username Post: 57 Westclox Dash Clock        (Topic#362070)
canuck57 
"19th Year" Silver Supporting Member
Posts: 174
canuck57
Age: 70
Loc: Campbell River,B.C., Cana...
Reg: 11-06-02
08-07-20 01:20 PM - Post#2800547    

Anybody know what the tiny threaded stem and nut are on back of clock, photo attached



Attachment: 3ADCA2CA-27D7-4136-9333-F20040625D13.png (4.54 MB) 45 View(s)

Someday,I'll be ridin' in a 57 chevrolet,she'll have whitewalls,headlights like diamonds,someday, someday.......


Edited by canuck57 on 08-07-20 02:05 PM. Reason for edit: No reason given.

 


Beltfed 
Poster
Posts: 59

Reg: 10-04-18
08-08-20 01:11 PM - Post#2800622    
    In response to canuck57

The one with the orange gasket is +12 volts in. The stem is fast/slow adjustment.
This clock like others works by closing an internal set of contacts. When closed the voltage energizes an electromagnet which is thrown in a semi circular fashion. This “cocks” the magnet and opens the contacts. A spring slowly pulls the magnet back to its ‘resting’ position. The clock then operates by energy built up in the spring being put into expansion by the magnets movement. And so on.
The gap of the points is critical as is the condition of the points as upon closure the points see almost a dead short.



 
canuck57 
"19th Year" Silver Supporting Member
Posts: 174
canuck57
Age: 70
Loc: Campbell River,B.C., Cana...
Reg: 11-06-02
08-08-20 03:30 PM - Post#2800628    
    In response to Beltfed

Thanks, is the fast/slow stem adjustable with screwdriver or ??

Someday,I'll be ridin' in a 57 chevrolet,she'll have whitewalls,headlights like diamonds,someday, someday.......


 
acardon 
Ultra Senior Member
Posts: 11420
acardon
Loc: DFW TEXAS
Reg: 03-25-05
08-08-20 04:04 PM - Post#2800630    
    In response to canuck57

I don't think there is a external fast slow adjustment. I understood that by repeatedly adjusting the clock in the same direction, it would adjust itself.

Don
66 Corvair (driving)
57 2dr HT (driving)
56 2dr HT (waiting to be restored)


 
Beltfed 
Poster
Posts: 59

Reg: 10-04-18
08-09-20 06:14 PM - Post#2800731    
    In response to acardon

I agree. I’m probably wrong on the tab being the fast/slow adjustment. It’s be a while since I torn one apart. My second guess is the ground wire to the electromagnet coil. The clock ‘guts’ come out as a unit so the ground wire needs to have a way to disconnect from the housing.



 


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