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PeterS

Bergeon mainspring winders 5356

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I bought the Bergeon set of 17 mainspring winders and used it for the first time on the Unitas 6497 (clone) following Mark’s tutorial.
He used No. 11. I really struggled to get the spring on the arbor. I had to put the spring on the mat, I had to use tweezers and literally force the arbor on the spring, it was a fight (he struggled too and it was off the camera so I can’t actually see how he put it on). I know that many often use arbors one size smaller than the winder but I had exactly the same movement as Mark and he used the No. 11. If I didn’t see his video I would have used No. 10 arbor and No. 11 winder. The No. 10 was a tight fit but it went on without a fight but I went with No. 11 as per Mark’s video.
What surprised me is that when I looked at No. 12, the diameter of the arbor was same as the diameter of No. 11, No. 12 arbor fits perfectly into No. 11 winder. I would have expected No. 11 arbor to be of a diameter somewhere between No. 12 and No. 10. I compared couple of others and they were the same case, No. 10 arbor same diameter as No. 9

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That much for Swiss perfection etc. 

Seuggest that you take good pictures with the measuring instrument and complain to seller and Bergeon at the same time. 

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Just now, jdm said:

That much for Swiss perfection etc. 

Seuggest that you take good pictures with the measuring instrument and complain to seller and Bergeon at the same time. 

Do you have the set? It seems to be in pairs the arbors and I don't know anything about it. It would seem logical for the arbors to have different diameters but I don't know what they should be.

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I don't have the set but two identical arbors make no sense to me. 

Just measure them all and post, there should be a meaningful progression in their sizes. 

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I’ll have to borrow or buy a Vernier gauge to measure them properly.
Visually, there is no difference between No. 12 and No. 11. There is an obvious visual difference between No. 11 and No. 10 (again, no visual difference between No. 10 and No. 9). The fact that No. 12 fits into No. 11 winder is a little strange.
Maybe that’s the way they are but it doesn’t seem to make sense.
Perhaps someone who has the set could enlighten me whether the set I have is no good or whether that’s how they come.

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5 minutes ago, PeterS said:

I’ll have to borrow or buy a Vernier gauge to measure them properly.

One really can't do watch work without vernier calipers, and is some case a micrometer.

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4 minutes ago, jdm said:

One really can't do watch work without vernier calipers, and is some case a micrometer.

I don't need them at this moment, I'm still learning to walk. But I will need to get some now.

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18 minutes ago, PeterS said:

I don't need them at this moment, I'm still learning to walk. But I will need to get some now.

Up to you of course, on my reasonable order of priority watch repair tools a  $15 digital calipers come much before than multi-hundreds winder set.

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I'm trying to concentrate on tools that I need to use to disassemble and assemble a watch movement for now. I know calipers are not expensive but it’s not needed it for it.
I’m trying to work out whether the set of mainspring winders is what it should be or whether there is a problem.

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I had a good look at it when I got home and they come in pairs: 00/0, 1/2, 3/4… 13/14/15 the arbor diameter is the same but 15 has larger ‘cover disk’ than 13 and 14.
From what I can see without measuring it, the arbor diameters and the disk diameters are the same. If you were buying it separately and you need, say 7 and 8 winders (they are different diameters), you can take your pick and buy 7 or 8 arbor/crank for the two winders.

I think this is how it’s intended to be. I don’t know why and I don’t know how Mark managed to get the spring on the size 11 arbor, but it is a clone and he probably disassembled and assembled the going barrel several times and that possibly stretched it a bit.

The pics below, the arbors are from left to right 3, 4, 5, 6, the others are 11 and 12 and I swapped the arbors, you will see the numbers on the winders and the arbors, see how it overhangs on the no 11 winder even when swapped. Also a picture of No 10 arbor in no 11 winder.
I thought the newer 17 set might have been different but see the screenshot from Mark’s YouTube video (light wood colour box) and you should be able to see how they overhang as well. Of course I can’t see the sizes of the arbors but I doubt it will be different.

20190711_182513 (Copy).jpg

20190711_185047 (Copy).jpg

20190711_185143 (Copy).jpg

20190711_194428 (Copy).jpg

MarksWinders.jpg

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