That is, the oscillating weight of the 9015 only winds the mainspring in one direction, whereas the 2824-2 winds in both directions. One just must be a bit careful and observant.Īnother difference is that the oscillating weight (rotor) of the 9015 is unidirectional, whereas the oscillating weight of the 2824-2 is bidirectional. Luckily, the precision of the parts is so precise that it doesn’t pose a problem. The single and decorated bridge of the 9015 looks nicer, but there are a lot of pivots, wheel teeth and pinions (also fitted and secured under the bridge) that must fit and mesh before the six bridge screws can be secured. In the 2824‑2, on the other hand, these sections all have their dedicated bridge. In the 9015 the barrel, the gear train, and the automatic works are all held in place under a single bridge. If I had not known that this was a Miyota, I would have thought it was a new ETA prototype as it is also thinner and overall looks and feels more modern.Ī major difference between the 9015 and the 2824-2 is the automatic works. And just like the ETA movements, and unlike many other Japanese movements, the Miyota 9015 contains exactly zero plastic parts. That is the gear train, the dial train (motion works), and the keyless works look a lot like an ETA. Getting into the details of this movement I was surprised to see how many sections of it were like or inspired by the ETA design. So, the question is, does it live up to what it promises? I’ve heard people call it an "ETA 2824-2 killer", but it only costs about USD 100 or even less. It is housed in many of the more expensive micro-brand watches, like the mentioned Helson. The Japanese Miyota calibre 9015 is presented as a premium movement, and it even comes pre-decorated with Côtes de Genève (Geneva stripes) and a sun-burst rotor. In the end, however, I decided to take a chance, make or break. I wanted a Swiss high-quality movement, like the ETA 2824-2. That was not what I had in mind for a watch with a price tag above USD 500. Why? Because it housed a Japanese movement! To be more precise, a Miyota calibre 9015. Nevertheless, I was hesitant to pull the trigger. Eventually, I found the Helson Skindiver (still available for USD 699). In 2015, before I knew much about watch movements at all, my greatest watch dream was to own and wear a vintage Blancpain Fifty Fathoms Aqua-Lung Diver, but not having the USD 25,000 or so to spend on a watch I decided to look for an affordable homage. There’s also and perhaps some other… but I have no experience with them.īackground and Miyota 9015 vs ETA 2824-2 comparison And no, I’m not affiliated with, , or running these sites). I’ve enrolled to all these courses, and they are all good, but in my opinion is the best and most affordable.
CALIBRE WATCH SERVICE HOW TO
If you want to learn how to repair and service watches on-line, I recommend, , or, in that order. It also requires some watchmaker tools and oils. It is not "rocket science", but it takes some effort, perseverance, and practice. If you have no experience, you should know that there are a few things you need to learn and understand before you can successfully service a watch movement. Also, making a walkthrough you get to understand the movement quite well. The idea is that the next time I service or repair the same or a similar calibre, I can focus on the job rather than spending time on figuring out what goes where and why. I make these walkthroughs for my personal use, although I’m happy to share them. Please note that this walkthrough is not a tutorial. Instead, this information is found on the top of the oscillating weight unless the movement has been branded, like in my walkthrough example (Ingersoll). The movement itself, isn’t stamped with the Miyota logotype or calibre number. However, it contains many parts (see the video), so this walkthrough will, I’m sure, facilitate the job. That’s why you’ll see my oiling suggestions after the parts have been replaced.Ī nice feature of the Miyota 9015 is that it doesn’t contain any parts that are tricky to handle, so in this respect it is a straightforward movement to service. Once I see that the oil has spread around the post or bearing, I know it’s sufficiently lubricated. To avoid over-oiling posts and bearings, I oil them after the parts have been assembled.
CALIBRE WATCH SERVICE UPDATE
I’d even be willing to update the pictures. If you want to contribute your own oiling suggestions, I would be very interested. I couldn’t find any oiling suggestions for this movement, so I’ve used my own experience to determine what oils to use. The disassembly pictures do not contain any close-ups of the screws.
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