I’m considering ordering a couple of Bergeon mainspring winders from CousinsUK, and I really want to get it right as these are expensive tools.
The way I read it, the specified diameter of each winder is the outer diameter of the winder’s barrel drum. That is, I would need to order a winder having a smaller specified diameter than the inner diameter of the mainspring barrel I’m going to use it with? For example, if the inner diameter of my mainspring drum is 9.80 mm (as is the actual case) a Bergeon No.6 Winder Ø9.80mm would be too large, or just right, no, yes?
So I managed to invest in a used "Bergeon 2795 Nivaflex" Mainspring winder . IMHO the winder barrels are a bit too big for the inner loop of the mainsprings.
So my question is, fo anyone who had both:
What is the difference between "Bergeon Nivaflex" winders and "Bergeon ETA" winders, the latter being the one especially made for ETA calibers.
I’m scouting eBay looking for a used Bergeon mainspring winder set like this. So far I’ve only used my fingers to replace mainsprings, and although it works, it is a delicate process, and I never feel perfectly confident doing it, and I’ve probably damaged (a bit) one or two mainsprings in the process.
Anyway, I’ve only just recently learned that not all mainsprings are wound in the same direction. Up until just a few days ago I had only serviced Vostok 24XX movements and a Unitas 6498 (following along the 2nd course on watchrepairlessons.com, good stuff BTW). However the movement I’m servicing now is a Poljot 2614.2H, and one of the differences is that its mainspring, unlike the Vostoks and the Unitas, is wound counter clockwise (inner to outer coil) when placed in the barrel.
Watching the video on how to use a Bergeon mainspring winder on watchrepairlessons.com, it is obvious (I guess?) that the winder used in the video wouldn’t work with my Poljot mainspring, as the hook on the mainspring winder tool is for mainsprings that are wound clockwise, and this brings me to my first question; Would the mainspring winder set I linked to work with both types of mainsprings, clockwise and counter-clockwise?
My second question is the result of trying to understand the listings of the Bergeon mainspring winders on cousinsuk.com. There are "left" and "right" handles, and "left" and "right" arbors for winders. I don’t understand what the "left" and "right" refers to, but my guess is that it determines the direction of the hook pulling the coil when wound into the winder barrel? Or, maybe it’s just a matter of the watch repairer being right or left handed? Or, something else?
If anyone can bring some light to my questions, or have some informational links to share, I’d be very happy!
Thats incredibly bad news. I was sure that this would not happen with the genuine article. I didn't order from Cousins and it will probably be a hassle for me to complain.
And the official answer from Bergeon is the worst. When you are a customer who has paid good money for a product that is defective, you do not want to hear "Well, we acknowledge that there is an issue with your product that renders your purchase useless, but other people have not complained, so you should be fine"
Hey guys! Great information here. Teaching myself some basic watch maintenance. Really just starting out. Bought this with a view to "learn by doing". It wasn't winding when I started. Had an amazing time taking it apart and examining the parts. The hairspring seemed bent so I had a go at shaping it and damaged it even worse. The study came off and was lost, then part of the spring knotted ... Argh. I'm murdering this watch I know!
I'm having a really tough time finding a compatible replacement. The parts chart says that the balance is "different from basic calibre 100" and to "refer to catalogue GF 239". I can't find any document by that name.
If I could get some help it would be appreciated!
Yes I bought them from Cousins. This is what Bergeon replied to them:
It's probably the friction of the white lid material coating flaking off. Yes I can see that it could happen but frankly I don’t think it’s a big issue. After a few operations you can clean it and it’s done. We are selling a huge amount of these oil cup and never had any complains.
So they know about the issue but have no intentions to do anything about it. Cousins didn’t like the outcome and have gone back to them again. So I’m still waiting.