CWC W10 Pendant tube size

[AndyGSi]

You should be able to tell if part of the tube is left in the case and maybe even push/pull it out..

If you can't then I'd probably drill to 2mm and reamer the rest to get a tight fit with a 2.2 tube.

[tIB]

48 minutes ago, AndyGSi said:

You should be able to tell if part of the tube is left in the case and maybe even push/pull it out..

If you can't then I'd probably drill to 2mm and reamer the rest to get a tight fit with a 2.2 tube.

I had a poke around when it first arrived and couldn't move anything either way - I'll have another look before the next steps... (I'll need to get that crystal out again too which wasn't as easy as expected yesterday, though I can try the syringe method...)

Thanks as always for the info - it's much appreciated. 

[Geotex]

As far as the split stem, I think you probably require the same one that I put aside to use in a GG-W-113 with a Hamilton 2750-based military movement. Benrus generally used the male section in the crown on 2370/2750 watches, but Hamilton put it on the stem side. It's designed to be very short so the break is just outside the mainplate. I don't recall where I sourced it, but the photo shows the stem and part number information. Then you can grab a corresponding female coupling with a short unthreaded section and cut it where you need it.

 

[tIB]

1 hour ago, Geotex said:

As far as the split stem, I think you probably require the same one that I put aside to use in a GG-W-113 with a Hamilton 2750-based military movement. Benrus generally used the male section in the crown on 2370/2750 watches, but Hamilton put it on the stem side. It's designed to be very short so the break is just outside the mainplate. I don't recall where I sourced it, but the photo shows the stem and part number information. Then you can grab a corresponding female coupling with a short unthreaded section and cut it where you need it.

 

Excellent, thanks very much for the info - I'll add that pic to my notes... Much appreciated!

 

Edit: wonder how likely it is a 2540 stem might fit the movement? Is there anywhere you can look to find stem dimensions/specs?

Edited July 25, 2024 by tIB

[AndyGSi]

One of the places those details can be found is here. https://www.windingstems.com/eta.php

I'll have a look at the Ronda Stem Catalogue and see if there's anything that matches the 2750

[tIB]

39 minutes ago, AndyGSi said:

One of the places those details can be found is here. https://www.windingstems.com/eta.php

I'll have a look at the Ronda Stem Catalogue and see if there's anything that matches the 2750

Amazing, thanks - while I think it's unlikely anything will match up exactly I'll do some searching on the male stems available on eBay. 

 

I should probably just buy a couple of the adapters and do a more careful job of cutting it down - I reckon that's worth a try.

 

 

Is close on most likely to be close enough to work? Theres this one: 

[AndyGSi]

16 minutes ago, tIB said:

I should probably just buy a couple of the adapters and do a more careful job of cutting it down - I reckon that's worth a try.

Or depending how good you are with a drill you could drill out the first few threads so it extends over the blank part of the stem.

[tIB]

31 minutes ago, AndyGSi said:

Or depending how good you are with a drill you could drill out the first few threads so it extends over the blank part of the stem.

Think the blank bit is similar width to the stem extender, though I'm definitely not that good with a drill!

[tIB]

Hoping to get back to this and hopefully sort this week - made a bit of headway with the male/female stem adapters... Or at least I did until I killed the actual stem, doh. Hoping I can get the whole make/female split stem thing sorted once the new stem arrives... 

Heading over to get the case drilled out too - I think the old tube has sheared having looked again so drilling out should sort that. 

We'll see...

[tIB]

Pendant tube fitted! 

 

Edited August 21, 2024 by tIB

[tIB]

Next step is to see whether I can get the new stem and adapter in place - I've got the shortest possible female adapter in place screwed into the crown, and have cut down the male adapter so it's much shorter but will still screw onto the stem...

I'll just need to see whether those reductions mean it will all fit together inside the casing - I'm not feeling too optimistic but we'll see...

Hope to find out in the morning.

 

edit: after looking at a couple of pics with the stem in place I'm more confident actually... Might have cracked it!

Edited August 21, 2024 by tIB

[tIB]

I did it! Surprised myself with the level of patience (and accuracy/dexterity) on this one...

 

Here she be: