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Sourcing a replacement abor, wheel, pivot

andycar
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andycar New Member

andycar

Posted
Posted (edited)

My grandfather clock cable snapped and resulted in damage to a 10 cog pivot and bent Arbor. Does anyone know where I can source a replacement. 

 

IMG-20241024-WA0001.jpg

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Edited by andycar
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  • andycar changed the title to Sourcing a replacement abor, wheel, pivot
Neverenoughwatches Distinguished Member

Neverenoughwatches

Posted
Posted
6 minutes ago, andycar said:

My grandfather clock cable snapped and resulted in damage to a 10 cog pivot and bent Arbor. Does anyone know where I can source a replacement. 

 

IMG-20241024-WA0001.jpg

IMG-20241024-WA0002.jpg

IMG-20241024-WA0000.jpg

That's a bugger, can it be repaired ? Dont know is pulling or cutting it off would be fun ? If it were me I'd be marking the pinion's position on the arbor...then see how easy it comes off.

nevenbekriev Distinguished Member

nevenbekriev

Posted
Posted

This parts are not completely replaceable. Well, depends on how old the movement is, but generally every movement was made for itself and nobody even thought that part from one would need to fit to another.

No problem to cut new clock pinion. The problem actually is it is big and a lot of steel must be cut by the milling machine, so bigger one is needed than for watches. Here I have shown how I have done on my general purpose lathe with home made lathe attachments.

http://forum.watch.ru/showpost.php?p=4423044&postcount=418

http://forum.watch.ru/showpost.php?p=4450639&postcount=419

http://forum.watch.ru/showpost.php?p=4590238&postcount=425

http://forum.watch.ru/showpost.php?p=5816394&postcount=529

Also possible to use another longer pinion with the same diam and leaf count and reshape it to fit

 

  • Like 3
Neverenoughwatches Distinguished Member

Neverenoughwatches

Posted
Posted
6 minutes ago, nevenbekriev said:

This parts are not completely replaceable. Well, depends on how old the movement is, but generally every movement was made for itself and nobody even thought that part from one would need to fit to another.

No problem to cut new clock pinion. The problem actually is it is big and a lot of steel must be cut by the milling machine, so bigger one is needed than for watches. Here I have shown how I have done on my general purpose lathe with home made lathe attachments.

http://forum.watch.ru/showpost.php?p=4423044&postcount=418

http://forum.watch.ru/showpost.php?p=4450639&postcount=419

http://forum.watch.ru/showpost.php?p=4590238&postcount=425

http://forum.watch.ru/showpost.php?p=5816394&postcount=529

Also possible to use another longer pinion with the same diam and leaf count and reshape it to fit

 

🤔 you forget Nev , you are among the elite of watchmakers 😅, you can do what many many cant lol.

AndyGSi Distinguished Member

AndyGSi

Posted
Posted
29 minutes ago, nevenbekriev said:

This parts are not completely replaceable. Well, depends on how old the movement is, but generally every movement was made for itself and nobody even thought that part from one would need to fit to another.

No problem to cut new clock pinion. The problem actually is it is big and a lot of steel must be cut by the milling machine, so bigger one is needed than for watches. Here I have shown how I have done on my general purpose lathe with home made lathe attachments.

http://forum.watch.ru/showpost.php?p=4423044&postcount=418

http://forum.watch.ru/showpost.php?p=4450639&postcount=419

http://forum.watch.ru/showpost.php?p=4590238&postcount=425

http://forum.watch.ru/showpost.php?p=5816394&postcount=529

Also possible to use another longer pinion with the same diam and leaf count and reshape it to fit

 

So what about making the actual part that's broken?

image.png.c6e9bfd49b519f69a2c9f33797ba5dfa.png

nevenbekriev Distinguished Member

nevenbekriev

Posted
Posted
8 minutes ago, AndyGSi said:

So what about making the actual part that's broken?

image.png.c6e9bfd49b519f69a2c9f33797ba5dfa.png

Well, new pinion needed to be cut. The first 12 pictures in the first link in my message show exactly cutting of a similar clock pinion. The others show the making of all the parts of the striking train that were missing

andycar New Member

andycar

Posted
  • Author
Posted (edited)

The abor is approx 75mm. The pinion 10 tooth 8mm approx. The wheel is not damaged. I have zero lathe equipment and skills. I was looking to pay someone to possibly remove the wheel and connect to a new abor with a new pinion. I'm in the UK. Does anyone know any machinists how could do this?

Edited by andycar
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rjenkinsgb WRT Addict

rjenkinsgb

Posted
Posted
9 minutes ago, AndyGSi said:

looks like 7 teeth with 1 missing?

It is eight; look at the other photo, it's clear on that; three visible either side of the spindle, with two more or less in line.

Pinion.jpg.3e12eaefe56fa01320c495af54df032c.jpg

  • Like 1
tomh207 Distinguished Member

tomh207

Posted
Posted
10 minutes ago, andycar said:

I had a quote of £250 to repair the Arbor.....more than the clks worth

Rather expected TBH,  it is a very skilled repair and needs expensive equipment.

 

Tom

JohnR725 Distinguished Member

JohnR725

Posted
Posted
On 10/24/2024 at 4:38 AM, andycar said:

The abor is bent and pivot snapped so thinking repair is hardly worth trying

repair or replace seems like a simple question doesn't. Except replace with what exactly? The only time you can replace a part with a brand-new part is if the part exists. you would have to identify the maker of the clock the exact clock and find out if that particular clock maker actually even had replacement parts which is usually unlikely. Which is why most people in clock repair repair things.

23 hours ago, andycar said:

It's off a Welsh long case by watkin Owen of llanrwst c.1780

I see part of my question is been answered except I wonder if they're still in business? Then as others have pointed out even if they were in business they would not have a replacement parts. So if they were in business they would make you a new part otherwise you would have to find somebody to repair the part you have now.

 

 

praezis Distinguished Member

praezis

Posted
Posted
2 hours ago, andycar said:

I had a quote of £250 to repair the Arbor.....more than the clks worth

Labor cost is in no way connected to the worth of your clock.

nevenbekriev Distinguished Member

nevenbekriev

Posted
Posted

Just to mention that lantern pinion can be made. This is much easier. Well, it will differ from the other pinions and will be in contrast with the style of the movement, but will work normally. If it is not so important, then may be it is the decision

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