ST36 mainspring winder

[Jon]

Hi guys,

I'm prepping for the first day of term here at London Watchmaking School and thought it would be really handy to have some dedicated mainspring winders for the ST36 (ETA/Unitas 6497 clone),

I've got some Favourite and other sets, but as you know getting the winder's arbor to fit the inner hook of the mainspring can be a bit of a nightmare. So, there must be some decent winders from AliExpress that someone has bought for the ST36 spring. Either as a set or separately. Can anyone give me their experience with an AliExpress winder set or what they bought new for their ST36?

Thanks!

[VWatchie]

Since you contribute so much great information on the site, I really wish I could help you. The Chinese set I bought from Cousins does not include the ST36, and when I google it I can't find anything useful. When I've worked on these pieces, I've always wound the spring by hand but I realise that's not a good option in a teaching context.

I'm keeping my fingers crossed that someone else can come up with a good tip!

[JohnR725]

21 hours ago, Jon said:

ST36 (ETA/Unitas 6497 clone)

one minor little problem here if it's a clone of the 6497 it's running at 18,000 but if it's running at 21,600 it's not exactly a clone it's 6497 – 2 which is going to bring up a minor problem. Fortunately we've had this discussion before and here's an image

then as far as dimensions ago I'm attaching a PDF.

 

 

 

HJ-Mainspring-Winders.pdf

[VWatchie]

@JohnR725 Is that a Bergeon set or a Chinese set? I'll take a guess on the former!

[JohnR725]

3 hours ago, VWatchie said:

Bergeon set

the image is from a PDF off of their website. conveniently as way saw items were circled because we've had this discussion before. Usually people are looking for the mainspring which is really hard to get because it is a different size and because everyone keeps lumping all the watches under a general category of the original watch when they've been changed to run at the higher frequency plus of course the Chinese have made unknown modifications.

On the other hand there still an outstanding watch to start with.