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What can I do with a faulty pinion?

berntd

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Jun 21, 2009
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Hello

Got a movement in that has already been repaired recently, complete with bushes.

The guy who brough it in, said it is just something small and the previous repairer charged him money (!Dohh) and in the end say it had to do with the barrels being loose and not worth fixing etc...

So, I looked at it briefly and observed that it would not go for more than a few ticks.

So I painstakingly fixed a large gap betwen the crutch and suspension by soldering a small piece of mainspring onto the suspension and filing it to just the right width, polished it etc.

Then the strike hammer fell off because someone mended it by butt soldering the broken brass wire onto the end piece instead of removing the stump and reinserting it there before soldering.
I fixed this too.

I then tested it on the bench and it was going nice and strong.

BTW: Barrels appeared just fine.

Problem solved??!! -- NOT:confused:

I came back later and it had stopped.

I tried the usual things, shake, train resistance, pallets etc. All ok.
It always appeared to be fine and then at some stage it stopped.
After spending hours on this thing, I marked all the arbors with engineering blue and then I observed that it always stopped with the first wheel pinion (the one that engages with the barrel) in the same place.

This pinion has bent teeth on it from a previous mainspring explosion. These have also been sort of straightened and then filed to look good but they are not.
The spacing between the teeth is still irregular.

Is there anythign I can do with this or does it simply need a new pinion ie I can't fix it?

I spent so much time in this, only to find out what the previous repairer already knew and told the owner who ommited to tell me the full story.
He has done this before as well.

Is it fair if I charge something for all that unnecessary trouble?

Regards
Bernt
 

Scottie-TX

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Apr 6, 2004
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Not sure what you're asking here:
Is it fair if I charge something for all that unnecessary trouble?
If you're asking, "is it fair to return a non-working clock and charge for your labor?", then, "no".
As for the damaged pinion you're gonna need to find or make another. I gather that it's a solid leaf pinion with damaged leaves. Dressing them as the previous repairman did is the only recourse as they DO NOT bend. Solid leaves break. Probably you'll be seeking a complete, undamaged wheel with a good pinion. That's just me; it's a matter of a pinion.
 

berntd

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Jun 21, 2009
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Not sure what you're asking here:

If you're asking, "is it fair to return a non-working clock and charge for your labor?", then, "no".
As for the damaged pinion you're gonna need to find or make another. I gather that it's a solid leaf pinion with damaged leaves. Dressing them as the previous repairman did is the only recourse as they DO NOT bend. Solid leaves break. Probably you'll be seeking a complete, undamaged wheel with a good pinion. That's just me; it's a matter of a pinion.

Ok, I need a replacement pinion...
For what it is worth, it is a german movment with removable barels and strike only. See pics.
Maybe someone has something like that in the junk box? The arbor / pinion in question has the blue mark

IMGP7289.jpg IMGP7287.jpg IMGP7288.jpg


@Skottie
Thanks for the reply. I am of the same opinion as you but I think we are both wrong.
I recently had a plumber in who charged me $382 (!!) for 1hour and 8 minutes work and he could not clear the blockage either. He just located it and told me it needs a new pipe = ($$$$$$).
I am just not a good busineesman.

Anyway, to have a new pinion like this made will cost many more $ that what this clock is worth. I am 100% sure the owner already knows this and has had quotes etc. I will not even inquire as the local cost to cut a pinion is severla 100 $$$

Best regards
Bernt
 

R&A

Registered User
Oct 21, 2008
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And I have straightened pinions in the past, so it can be done. But I would have to see yours to tell whether that can be done or not. Do you have a picture of this repair. >>>So I painstakingly fixed a large gap between the crutch and suspension by soldering a small piece of mainspring onto the suspension and filing it to just the right width, polished it etc.

H/C
 

soaringjoy

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Feb 12, 2009
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Well, your movement is listed in Flume Grossuhr-Schlüssel 1957, but they don't list
the maker.
The plates should be 93 x 89 mm, and it's FWS-Nr. 65258 (Page II-227, Group 652)
Rudolf Flume, Essen, is still in business, but I doubt they still have those parts.

Flume65258.jpg
 
Last edited:

gmorse

NAWCC Member
Jan 7, 2011
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Have you considered getting a specialist micro-welder to rebuild the damaged teeth? It's a technique beginning to be used here in the UK, and it retains most of the original material.
 

berntd

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Jun 21, 2009
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Thanks for all the good info folks!!

I will not invest more time in trying to repair this pinion. Someone had already removed the wheel from it (it is soldered back on) and filed the teeth or something.
I am sure someeone else has made a loss on this clock before me.

I will tell the owner that it needs a new pinion and I will ask if he wants to spend that kind of money. "c'est la vie"


Hey that Flume Grossuhr-Schlüssel 1957 book sounds very interesting indeed...


Best regards
Bernt
 

Willie X

Registered User
Feb 9, 2008
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Yes, you certainly can charge for the work you do in diagnosing a movement and preparing an estimate for repair. BUT this fee needs to be brought up and agreed on BEFORE you take in the clock.

I would return this clock at no charge like a hot potato. Pleasantly tell the customer that it is damaged beyond repair and ask the customer to bless you with any future clock repair work they may have.

No good way to repair a broken steel pinion, they have to be replaced. Having a new pinion made will cost a lot and might not solve your problem.

Willie X
 

R&A

Registered User
Oct 21, 2008
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But the clock isn't damage beyond repair. Hey your reputation is on the line. If they take it to somebody else and they say they can fix it. Everything is up to you at this point. But the time you have put in, is an education and not a loss. This will help ya next time you run across the same repair. Some just didn't wake up one day and know all what they know about clocks.
H/C
 

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