Noob time bomb movement swap

[fredflintstone]

Hello everyone, hope you are all safe and well in this mad time that is 2020.
My latest project is a movement swap. Got hold of a Domi noob gmt with a goosed movement, the hour hand stops at 9pm. So I got hold of a 3186 clone movement, SH I believe.
I've got a set of hands for the 3186.
What else do I need? I've read somewhere I'll need a small spacer. Can't find the thread I read it in I'm afraid.
I've got a 3d printer here if anyone knows the dimensions of this spacer.

Have any of you lovely people got any hints or tips for me? I'm going to have a go at it, if I can't do it I'll hold my hands up and send it off, I know my limits!

Thanx.

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[KJ2020]

The spacer you need is very thin, about 1.0mm IIRC. I've also seen it done with crystal gasket pieces, cut where the movement tabs go and just wedged down into the space. There are some pics of it here in the forum, I'll try to locate some.

I would mount a junk dial and hands onto the true clone movement and see about fitting it to the case. That way you won't mess up your good parts doing the fitting. Stem hole and tube vertical alignment can be an issue - the stem heights are slightly different between the movements. You may have to remove the tube O ring to allow more height room for the stem.

 

[mnkoshka]

Stem hight could be an issue as KJ mentioned, depending on what case you use. I did a conversion from 2836 to VR3186, so the VR movement into a 2836 case. I had to dowel & weld and re-drill for the new stem position. The hight differences arnt much but enough to cause problems sometimes. The case I had didn’t require a spacer as the Rolex cal is bigger than the ETA some pics here

https://forum.replica-watch.info/fo...5829-2836-16610-transformer-to-3185-16710-gmt


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[Rx4Time]

I have a noob v7 GMT which I have fitted a genuine movement, etc in. The 3186 will fit without any modifications to the case. The stem height is something like 0.5 mm difference, not enough that it required any additional work. You will have to use retainer tabs to hold the movement in place. Are you planning on reusing the replica dial? How is the date wheel that you have on your clone 3186 movement? You might want to consider just getting a genuine date wheel now while it's all apart versus getting it together and realizing you're not happy with the font. Are you planning on using a set of genuine or aftermarket hands? To hold your dial in place you may have to use dial dots or have someone move the dial feet to the correct position for the 3186.

 

[Rx4Time]

Here's a few random pictures I had in my image posting website that may help you. One other thing I forgot to mention is you probably want to get a movement ring to ensure the movement doesn't shift at all. It's not an absolute necessity but if you're spending this much time and money on a build I would hate to have something so minor cause a potential headache like a scratched dial

 

[fredflintstone]

Thank you so much guys, really appreciate your knowledge
So the spacer ring that's needed is a very thin movement holder/ring, or maybe a gasket. Now that is thin! I may need a new nozzle on the printer for something so fine.
Which direction does the stem need to go? Up towards the crystal or down towards the case back? I'd assumed the spacer needed was a different dial spacer so was prepared to print on new one. Does the dial spacer need to be 0.5 bigger or smaller? I know this will mess with the hands, which are after market by the way.

Cheers,
Daz

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[KJ2020]

I would mount the movement in the case (centered laterally) with a junk dial then measure the gap to the case. You can use any number of measuring tools, like a spark plug feeler gauge for example. Also you can observe the stem hole position relative to the tube center and go from there.

I would make every effort to not change the dial spacer thickness. Even the slightest amount will alter the date mag, or potentially leave you insufficient room to mount 4 hands with proper clearances.

 

[fredflintstone]

Date mag isn't an issue, I hate the things so remove them from all my keepers.

I'm going to start the little project later today. Like I've said, I know my limits s if I get to a point where I feel like I'm running out of talent I'll just stop and send it off to ado to rebuild.
I'll keep you posted, thanx.

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[fredflintstone]

Well I had a good go at it, but I could feel I was getting frustrated so walked away. Boxed it up and posted it off. I wasn't comfortable with the stem height or any aspect of it really, out of my range of abilities. Plus I don't know the full history of the movement I bought it off here, so its on its way for a service before it gets fitted.

Thanx for your time here Pa.

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