Jump to content
Sign in to follow this  
hofnerpres

Escape wheel wear pictures

Recommended Posts

Hello guys

I've been renovating quite a few 1960s Seikos recently and a couple have shown very scattered traces on the timegrapher and generally ratty running after cleaning. All three responded to a new escape wheel very well. Being unable to see the wear using normal magnification I decided to try one of the £15 USB microscopes available on fleabay. They are too light, the software is hit and miss but glue it onto a heavy base and they will do the job. The difference between a good and bad wheel became obvious. The square corners get rounded off by the fork pallet jewels and precision is lost.  The first two shots are from a worn 6602B and a 7625A Auto. Note the rough finish but 50 years ain't bad - neither watch back showed any servicing marks and were bone dry. The third shot is also a 6602 but it's a good performer - note square edges. The last is from my new baby - King Seiko 4402. Very different quality. Three lessons.   1. These devices are fine for simple close examination. 2. Don't neglect oiling the escape pallets - it's tricky but worth the effort  3. Once you've handled a part with your fingers it needs cleaning again - it's horrifying how many skin particles appear.

 

 

Fri Nov 17 14-51-09.jpg

Fri Nov 17 14-54-23.jpg

Sun Nov 19 22-19-25.jpg

Sun Nov 19 12-12-59.jpg

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Recently Browsing

    No registered users viewing this page.

  • Topics

  • Posts

    • Hello and good afternoon to all.
      OK, here is another little horological teaser for you to get your heads around. I have this great OASIS lady's (?) B270 watch that I got in a set to be repaired. It actually only needed a battery and works great. However, the strap DEFINITELY needs replacing! AND here is my problem. I just CANNOT figure out HOW to get the spring bar out.
      Actually, I am not sure it IS a spring bar. I have tried hard with all manner of tools (spring bar removers, screwdrivers, sharp knives etc.) to get the spring to release, but no joy. I took the strap off by hand, so you can see the photos to see what I have. I really HOPE it IS a spring bar, but if so, HOW to get it out?? And if it is NOT, then HOW to fit a new strap on other than by glue? Also, as an aside to all this, does ANYONE know how to set the date on this watch? 
      But first things first eh! As far as I can tell, there are NOT two positions that you can pull out the crown to. But I could well be wrong.
    • Hi friend, welcome and all good wishes for your success. Regards, Mike.
    • There are three different types of stand/holder for this microscope I have seen on eBay. This one on a (sort of) rigid stand, one with what looks like a flexible gooseneck style stand and one on a tiltable suction based stand. You could therefore get one you could angle if wanted - you may even be able to buy the stands seperately as the microscope is the same. Stephen
    • Welcome, Franks enjoy the forum.
    • Thank you for your introduction and welcome to this friendly forum. Have you worked on any verge clocks? If so you will have some idea on how a verge works. As ecodec has said they can have big problems and are not for the faint hearted.   
×