3135 into a 3035 case

[kidcreole]

Hi folks as the title implies I want to transplant a y3135 into my 16800 case. I understand I'll need a spacer between movement and dial to make up for the thinner 3135 profile. Is this it or am I missing something? I already have gen dial, hands, crown etc.

Thanks in advance.

[tomhorn]

Won't work unfortunately. The height differences in the movement prevent it.

 

The 3035 is thicker above the crown position. This means in order to get a 3135 to fit, you would have to lengthen the cannon pinions to get the hands in the proper position to clear the dial (for which parts aren't available), and you'd have to put in a dial spacer to get the dial up to the rehaut. You might also have to machine the OD of the case.

 

You'd probably be better using a TC or Sean case and drilling lugholes if you want to use that movement. Not perfect, but it will at least work.

 

Just thought of something ... you didn't specify which case you were using, or which movement was currently in the watch. If you have a watch with an ETA (or clone) 2824, then it should work.

Edited December 27, 2014 by tomhorn

[jigelow]

I was looking in to this and Ephry told me its possible. He stated you need to use Tc's flanged case screws and grind away at the slots in the case in order for it to sit correctly. He said it wasn't necessarily difficult, but it was tedious.

[jigelow]

My comments are for a ST case, which I'm assuming is what we're talking about.

[automatico]

If the Y3135 is the same size as genuine, the stem will be about .4mm too far toward the front of the case tube. Hard to fix.

 

A thin spacer between the dial and reflector ring (rehaut) inside the case will work but it is a real hassle to make a spacer this thin. I made one for a DW '5513' case in order to put a 1520 in it (they are made for a 1575 date mvt). Making the thin spacer out of an aluminum washer was more trouble than it was worth and I had to use an old 'ww' bezel chuck from the 1920s or 1930s to hold it. I could have used stainless steel but it is harder to work with. Factories usually die stamp small parts like this, they do not machine them.

[kidcreole]

Thx for the response guys. I'll be getting the y3135 anyway so I'll give it a go and report back. I've collected 2 gen dials for this build. I'd really like to avoid cutting the feet off these gems.