Jump to content

6498 clone shock spring problem

Speeedmaster
 Share

Recommended Posts

Speeedmaster New Member

Speeedmaster

Posted
Posted

Hi to all,

I recently acquired a 6498 clone movement (Corgeut watch) to play with while watching Mark's videos and broke the top balance shock spring. To my surprise it was not a Incabloc spring but something like a KIF TRIOR or similar. I am attaching a picture.

I bought an assortment of shock springs from Cousins but the closest one I found was just a bit bigger than the original and does not fit. I am attaching a picture of the original and the new one.

Any ideas what this spring is and where I can get one?

Thanks

IMG_0125.JPG

Link to comment
Share on other sites
centerwheel Member

centerwheel

Posted
Posted

I bought a 6497 clone, too, and at my first try the upper spring flew up and got lost. This one had a standard Incabloc shape ("lyre"), but of slightly different dimensions. So, it did not fit. To my chagrin I found out the there is no market for clone replacement parts. And clones are not really 100% identical to ETA original. For some unknown reason they made "improvements" or just imperfect copies of some parts. The clone, being so inexpensive, they want you to buy a new one rather than trying to make repair.

On my Seagull I found a way, imperfect but Ok for practice, to use a standard Incablock lower spring. It's smaller but it can be carefully maneuvered into place.

Link to comment
Share on other sites
nichod WRT Addict

nichod

Posted
Posted

I purchased an assortment from Jules Borel which did work in the Chinese movement I had at that time.  Later another seemingly identical movement with engraved (stamped) plates came with regular INCA type springs.  

The great thing about standards is that there are so many from which to choose!

I wasted 30 minutes trying to figure out why the going barrel from that stamped plate model wouldn't work in the smooth plate variety.  It had different teeth!

Here is a pdf with some size data.  Hope it helps.

 

 

KIF shock springs.pdf

Link to comment
Share on other sites
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • Neverenoughwatches
      What are these Seitz B-Jewels?

      By Neverenoughwatches · Posted

      Plus the added foresight not to buy a watch with an AS 1012 inside it.
    • VWatchie
      What are these Seitz B-Jewels?

      By VWatchie · Posted

      That's very interesting information. I haven't tried to see if my bombé jewel holes have olive holes but I think I should be able to tell on the larger jewels at least. See if I get a chance to have a look later today. This little story was very comforting to read for a "bungler" like myself. That success isn't a given even for a pro. Thanks for sharing!
    • Michael1962
      I'm going to be setting up a decent little workshop here at home.

      By Michael1962 · Posted

      I forgot that I said I would do that. Will take some tomorrow and post them up post haste.
    • nickelsilver
      What are these Seitz B-Jewels?

      By nickelsilver · Posted

      I've seen some really nice early 20th century pieces where all the jewels, including center wheel, were convex. Definitely to reduce friction. It can be quite hard to tell if a jewel has olive holes, especially on small sizes, but that again reduces friction- as well as accommodates small misalignments better. Why they aren't used more often? I imagine it was found that at a certain point in the train the actual advantage became negligible, and the added cost on high production movements is why it's not seen on those, just higher-end pieces.   I did an experiment on a little 5x7"' AS 1012 a few years back. These things run OK sometimes, but often are absolute dogs. And AS made gajillions of them. I had a NOS novelty watch in for a service, ran OK flat, massive drop in amplitude vertical. Made like 3 staffs for it trying different pivot sizes, no change. Tried high quality (not Seitz) convex/olive jewels, no change- the original were flat, but could have been olive hole. Same for the pallet fork, then escape wheel, no change. Probably had 20 hours in the watch, new staff and new hole jewels through the escape wheel, no difference in running. Just a dog of a movement. But if I were making a watch I would use them, just because.
    • Neverenoughwatches
      What are these Seitz B-Jewels?

      By Neverenoughwatches · Posted

      When Nicklesilver mentioned the use of them on non coned pivots on older high end watches closer to the escapement.  That suggested to me  probably fourth wheels and possibly third wheels. The square shoulder rotatating on the much smaller surface area of a dome as opposed to a flat jewel surface. I'm curious as to why they are not used predominantly?
×
×
  • Create New...