Jump to content

Recommended Posts

Posted

I've just had one of those pop up ads appear on my screen for a Seiko 5 green dial model snk805k2 special price £55.99, on Amazon

reading through the garb it says waterproof to 30 metres/98.7 feet then goes on to say not suitable for swimming, snorkelling, water related work, etc ???

just wondered which is right  :huh:

Posted

Absolutely, and don't shower with it or any other watch, soap and warm water are no good on them. As for water sports/work, some instantaneous pressures are created when we move our hands in the water. Those exceed the 30 m rating (3 ATM ?).

  • Like 1
Posted

Waterproof is an interesting term and I was under the impression it was largely abolished replaced with Water Resistant. But googling I see that is still being used? The reason why it was supposed to be abolished is waterproof implies an absolute which is basically almost impossible.

So a couple links Casio has a nice chart showing the varying degrees of water resistance. Another link explaining some of the standards.

Then there's another problem with water resistant watches not often mentioned. Specifically time and temperature changes especially if you can repeat this on a continuous basis. So if you can heat the watch up like hot shower for instance hot tub the air inside will expand a very small amount. The watches designed for external pressure not necessarily internal pressure. Problem with temperature change is the air will expand in the watch when it's warm attempt to return to its normal volume when it cools down with time that repeated pressure vacuum even it's a very tiny amount will slowly pull water past the gaskets.

http://www.casio-intl.com/asia/en/wat/water_resistance/

https://en.wikipedia.org/wiki/Water_Resistant_mark

  • Like 3

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Thanks for this post MikePilk, I just came across a similar problem with an Omega 1022.  The problem I had was the seconds pinion spring was bent out of shape and did not even engage with the wheel properly, so the seconds hand was not moving at all. (no power loss though :) I removed the automatic module so I could access the spring and work on it. Once I bent it back close to the right shape, I experienced the same problem you reported about power loss.  Many tweaks later, and the seconds hand is moving properly again, with amplitude back to good numbers again. Cheers
    • After cleaning up the pivots, I made bushes on the lathe. At this point I've pressed in 6 bushes (3 sets) and the wheels turn smooth. What I can also tell you, is that I'm not looking forward to final assembly. Getting the pivots aligned seems to get exponentially more difficult with each wheel that is added.
    • Islands are interesting places to live depending upon their size and other factors. This is a bigger island and it has a bridge to get there at least on one end. It's also big enough that you don't have to go someplace else to get things typically. It can be a problem if you get a job in Seattle though. Yes I've known of people who commuted from the island to Seattle for a job and I don't quite remember how many hours it took but it took a long time. So basically islands are nice if you don't have to leave very often.
    • Thanks @JohnR725! Everything you say makes a lot of sense and is encouraging to read.
    • isn't it nice to have a decent case open or when the case doesn't want to be opened? In the case of a Rolex watch that supposed to pass specific water resistant testing you probably do need to tighten the back down. But they shouldn't be tightened so much that they risk stripping the threads out. Then the other problem that comes up is the gaskets can start to disintegrate and then getting the back off can be quite a challenge unless you have a really good tool and perhaps some penetrating oil to loosen things up. Yes really nice case marking. When I was in school we were taught to mark the cases and  the American watch and clockmakers Institute even had a? So if you joined at one time they would give you an identification number. They were explaining or giving an example of if the watches ever found in you have a unique number they can perhaps figure out the history of the watch or identify the body it's attached to for instance not that that probably comes up that often. So you got a unique number and even made a special metal stamp that you can purchase. It wasn't a super big aggressive stamp but still it left a mark in the back of the case. Then I heard from people at work on Rolex watches they were using a felt pen indelible but later on they decided that was bad because apparently the ink could release  chemicals although it seems like once it's dry that shouldn't be an issue. Then of course today was nice is you can keep computer records sealed have to mark anything at all I personally find it's best to leave no reference behind that you were even there. Especially when you have a beautiful watch that has no markings at all and now it has your scribbling all over it not good typically if there is a typical and watch repair?  a lot of minor repairs you don't need to do a complete servicing. But beyond a certain point you're going to have to take apart a lot of stuff you're going to disrupt the lubrication even if it looks perfect right now and yes you might as well just go ahead the service the whole thing. also in a watch like this where a lot of things seem to be going on the complete service would be better then you'll know exactly where you stand versus dealing with unknown mysteries for prior repair.
×
×
  • Create New...