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[Pompomurin's] Let's build a Rolex GMT Master 16700 (with 3135 to 3175 movement conversion)

bowtiefanatc

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I asked the place I got mine from if they had any more and they said no. It’s definitely a treasure hunt!
 
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ross29

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Read some bad reviews about that shop. That’s why I went a different direction
Yeah, I couldn't get enough information on that one. It seemed too good to be true. Enough time in this hobby and you know. I think I found the last 284 part! Should be shipped out on Monday for me. Fingers crossed 🤞
 

ross29

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How are those builds coming along?
 

bowtiefanatc

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How are those builds coming along?

Just ordered a couple VS3135’s, have the parts for the conversion already, as well as dial, hands & roulette date wheel. Going to order the case soon hopefully.
 
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bowtiefanatc

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Yeah, I couldn't get enough information on that one. It seemed too good to be true. Enough time in this hobby and you know. I think I found the last 284 part! Should be shipped out on Monday for me. Fingers crossed 🤞

Did you finally find part 284?
 

ross29

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Did you finally find part 284?
Yes, Finally! But of course, right after I paid for the last part... I found a Gen 3175

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I was surprised at how tiny the 3175 670 is, though.

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I think I might just actually have a Genestien here in the making now, though.
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h7TwnQ.jpeg

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h7TuI8.jpeg

h7dAEI.jpeg
 

ross29

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It's kind of a long story, but goes to show, you never know what you might find while on the hunt. It figures. Of course, it happens just as I am paying for the final part, though. The hands should be arriving soon, and then I can send the parts off to get built. We'll see how it goes, I guess. Fingers crossed, it comes out well. This thread started me on one journey, and it is hard to believe where it has ended up so far.
 
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bowtiefanatc

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I would like to find a 3175 engraved bridge but it’s not crazy important as I’m not going to open the watch for people.
 

bowtiefanatc

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Hi, I have been trying to convert a 3135 to a 3175 like yourself but I can not seem to find the correct part 3175-670. I've tried a couple that were advertised as this part number and genuine but they simply do not fit. I've attached a picture of the different ones that have arrived but they are all different lengths . The distance from the main plate jewel to the jewel in the the calendar plate is fixed so pivot to pivot end length can not change but as you see the top one is too long ( I assume this is the most correct part with 3 gear wheels) the middle one is the original and the bottom one is supposedly a 3135 identical part but is too short pivot to pivot. did you come across this problem yourself?



So, in my saga of putting my head through my table top here is what I learned about the 670.

Top one is for 3185/86 to accommodate the jumping hour function.

The 3135/3155 wheels are too short, despite a website saying that the 55 one would be compatible.

The 3175-670 is as elusive as the Loch Ness monster, chupacabra and kokui combined.

One days I’ll find one…..one day
 
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carlo1976

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So, in my saga of putting my head through my table top here is what I learned about the 670.

Top one is for 3185/86 to accommodate the jumping hour function.

The 3135/3155 wheels are too short, despite a website saying that the 55 one would be compatible.

The 3175-670 is as elusive as the Loch Ness monster, chupacabra and kokui combined.

One days I’ll find one…..one day
I have found the correct one and one going spare …pm me 👍🏻.
 
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