Mains synchronous clock movement
 

Hello,

My mains synchronous clock (made in woodwork class half a century ago) has stopped working. I think the motor coil has gone open circuit.

There is only one place that sells the motor, but unfortunately they are trade only!

See

https://www.cousinsuk.com/product/ma...ous?code=M7814

Note: this has to fit a panel 11 mm thick, there are other ones I can get for a 5 mm panel: however, the construction of the clock makes these unusable.

Perhaps I could have the coil rewound? But there may be other problems with the motor, is it worth the risk?

Or could I find a friendly clock repairer who could order for me?

Michael

Re: Mains synchronous clock movement
 

I'm sure Ed Dinning could re-wind it for you.

Or you could re-wind yourself using thicker wire and power it from a small step-down transformer: http://sound.whsites.net/clocks/ocm.html

I order from Cousins from time to time, though I tend to wait for the shopping list to get quite long to make the postage charges worthwhile. AFAIK, the most relevant part of their "trade only" policy is that you can't return goods ordered in error like you can usually with mail ordering.

Could you post a pic of the motor you currently have, please?

Nick.

Re: Mains synchronous clock movement
 

Hello Nick,

For Cousins, when you register with them don't you have to confirm that you are in the trade?

Michael

PS Sorry Nick, photo coming asap.

Re: Mains synchronous clock movement
 

Photos as promised

Re: Mains synchronous clock movement
 

Did CE marking exist half a century ago?
Andy

Re: Mains synchronous clock movement
 

You are right, this is a replacement movement! Must be 20 years old though I can't remember exactly.

Re: Mains synchronous clock movement
 

We have a Cousins account, we have to place an order most weeks.

Re: Mains synchronous clock movement
 

CE marking started in 1993 replacing the EU mark.

Re: Mains synchronous clock movement
 

Yes you have to, but that is just a checkbox you have to tick... No proof is requested. It is only a matter of honesty ;D I have bought stuff from them several times and I am not in the trade.

Re: Mains synchronous clock movement
 

And presumably you don't have to say exactly what trade you're a member of....... you're a "restorer"- a perfectly good trade!

Re: Mains synchronous clock movement
 

H S Walsh are another supplier who come recommended:

https://www.hswalsh.com/categories/mains-synchronous

Re: Mains synchronous clock movement
 

Can we have a pic. of the clock?

Re: Mains synchronous clock movement
 

Herald1360: Good point!

Phil: Unfortunately neither the CM310 nor the CM311 is suitable.

The CM310 has a maximum panel thickness of 5 mm whereas mine is 11 mm; the CM311 is too big and also has no seconds hand.

Thanks anyway!

The Cousins one (M7814) is now in stock again so I'll try to order from them.

Brigham: Yes, indeed, photo coming this morning.

Re: Mains synchronous clock movement
 

Another approach is to rewind the motor to operate on a low voltage and add a transformer. I've previously linked here to a website which gives details, but I can't spot my posting at the moment. It makes sense because the typical coil for operation at 240v is wound with thousands of turns of fine wire, whereas rewinding for, say, 6 volts means fewer turns of thicker wire, much more manageable.

Andy

Re: Mains synchronous clock movement
 

See my link in post 2, Andy ;)

Re: Mains synchronous clock movement
 

Photos

Re: Mains synchronous clock movement
 

Now that is pretty, and you made this when you were in your crib?

Re: Mains synchronous clock movement
 

Age 14 I think!

Perhaps it could also do with a set of new hands ....

Re: Mains synchronous clock movement
 

That's a lovely piece indeed, with a classic 1930s look to it.

Re: Mains synchronous clock movement
 

Oops, I hadn't spotted that you'd already mentioned the idea.

Andy