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Replacing 2813 with miyota 8215/821a

C

Coaldust

Do not accept unsolicited offers
15/6/20
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UK
Hey

First post here as I've just got my first rep. It's a u1 ap royal oak.

It's got a 2813 copy I don't think it's a gen DG. Problem I'm having is the rotor is free spinning in both directions and not charging the watch. But it does wind and I checked the power reserve and I got 41 hours.

It Gaines about 30 secs per day. That I'm not to bothered about but I've never opened a watch before and I don't know whether to try and find out the issue with the rotor or just replace the movement for a better one.

The watch itself is actually very nice. As you know they are thicker than gen but I gotta say for £47 it's a beautiful watch. I've seen different posts stating that the miyota 8215 or 821a (hacking) is a direct drop in? Has anyone done this swap? As I'm very interested in upgrading the movement. I guess I could get a gen dg2813 but I'd rather a miyota. First choice would be a nh35a but I don't think that's possible.

I have a watch tool kit. But as I say have zero experience working on watches but I'm confident I could just swap a movement as long as I don't have to start modding to much.

Any feedback would be much appreciated.
 
p0pperini

p0pperini

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For the price you paid, I'd be inclined to consider leaving it be and enjoying it as the cheap and cheerful rep that it is. Even if the rotor isn't functioning, having to hand wind it every 41 hours is no real hardship.

It's probably unwise to approach replacing a movement with the attitude, "It's a straight swap - should be easy!" - particularly if it's the first time you've done any work on a watch. The chances are something will prove difficult, things can go wrong, and quickly your straight swap becomes a hunt round for replacement parts... In my experience, something almost always goes wrong. But that might just be down to my own special levels of ineptitude.

Later, when you have a bunch of reps and this one is consigned to your "my first rep" drawer, you might want to use it as a practice piece for movement swapping/upgrading, and give it a new lease of life.
 
C

Coaldust

Do not accept unsolicited offers
15/6/20
5
0
0
UK
p0pperini said:
For the price you paid, I'd be inclined to consider leaving it be and enjoying it as the cheap and cheerful rep that it is. Even if the rotor isn't functioning, having to hand wind it every 41 hours is no real hardship.

It's probably unwise to approach replacing a movement with the attitude, "It's a straight swap - should be easy!" - particularly if it's the first time you've done any work on a watch. The chances are something will prove difficult, things can go wrong, and quickly your straight swap becomes a hunt round for replacement parts... In my experience, something almost always goes wrong. But that might just be down to my own special levels of ineptitude.

Later, when you have a bunch of reps and this one is consigned to your "my first rep" drawer, you might want to use it as a practice piece for movement swapping/upgrading, and give it a new lease of life.
Click to expand...

Yes that is an option that I was considering, just removing the rotor to stop the noise and just use as a wind only watch. That being said I do enjoy tinkering with stuff so idk lol. The miyota does seem like a decent choice though if it is indeed a direct drop in. But as you say I'd likely hit problems.
 
Last edited:
Ams55557

Ams55557

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16/3/18
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While a touch nicer, the 8215 isn’t that much of an upgrade in a 2813.
if you’re interested in starting this as a hobby go for it. But realize, like most craft hobbies it will take a while to get the hang of doing things well. Watches require super amounts of patience , dexterity and knowledge.
Also, like most hobbies, if you go down this path prepare to spend more than just buying a new watch from the gate.


Just an hour ago I finished a 4 month project with a 3804 (GMT of the 2813) movement and I’m super excited. Between ordering the wrong parts, needing a few better tools, messing up a dial or two, I ended up spending much more than the $280 bp version, I’m super pumped to start the next one.

The Seikos (nh35) are not going to work as a replacement for the 2813. All the dimensions are different. If you want, the seiko mod scene is an awsome way to start the modding/fantasy watch hobby.
 
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C

Coaldust

Do not accept unsolicited offers
15/6/20
5
0
0
UK
Ams55557 said:
While a touch nicer, the 8215 isn’t that much of an upgrade in a 2813.
if you’re interested in starting this as a hobby go for it. But realize, like most craft hobbies it will take a while to get the hang of doing things well. Watches require super amounts of patience , dexterity and knowledge.
Also, like most hobbies, if you go down this path prepare to spend more than just buying a new watch from the gate.


Just an hour ago I finished a 4 month project with a 3804 (GMT of the 2813) movement and I’m super excited. Between ordering the wrong parts, needing a few better tools, messing up a dial or two, I ended up spending much more than the $280 bp version, I’m super pumped to start the next one.

The Seikos (nh35) are not going to work as a replacement for the 2813. All the dimensions are different. If you want, the seiko mod scene is an awsome way to start the modding/fantasy watch hobby.
Click to expand...

Been thinking about it. I'll probably just order a few cheap 2813's as back ups that I can use if they kick the bucket.

I'm very impressed with the nh35 actually. Have one in an Invicta Pro Diver. Quite rotor and just feels very good quality for the price. And extremely accurate as well.

Thanks for the info
 
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