Jump to content

Raketa Winding Stems?

Robbie010

By Robbie010
in Watch Repairs Help & Advice

 Share

Recommended Posts

WatchMaker Super WRT Addict

WatchMaker

Posted
Posted

Helpful info from Poljot. My only comment would be that the Cousins references can't necessarily be 100% relied on to draw the necessary conclusion. I recall commenting somewhere else where an ETA stem had a specific reference and N in stock ... but a look up with the direct Ronda number revealed a different amount in stock (and a different reference ... and a different price).

The composite below shows a 2609.HA stem (from https://www.youtube.com/watch?app=desktop&v=cbWoYjdzamY) and a 2614.H stem (from https://www.watchuseek.com/threads/assembly-of-a-2614-h.5235955/). They sure look the same but this is only inference; not direct experience with these movements and their stems:

 

Raketa.jpg

Link to comment
Share on other sites
Poljot Super WRT Addict

Poljot

Posted
Posted

Re: "the Cousins references can't necessarily be 100% relied on"

Agree 100% that Cousins' references are not ... 100% ? accurate. That's why I said that further homework needs to be done - aka searching different catalogues, eBay listings, etc.

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


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • Randy55
      Introduction

      By Randy55 · Posted

      Welcome to the group Stirky. You can search for just about every subject in the craft here. Don't be afraid to ask if you can't find the answer that may have already been covered ( some ad nauseum LOL ). You don't have to buy Bergeon to get good quality. There are many decent mid-range tools available that will last you a lifetime. Cousins would be a good place to start . Cheers from across the pond ! Randy
    • Jon
      What are these Seitz B-Jewels?

      By Jon · Posted

      I picked up a similar amount of these jewels some years ago in a watch and clock fair. Every now and then they come in handy. This week I've got a rubbed in bombe jewel in the balance cock that is cracked and needs replacing. Very handy to have a vintage assortment of these type of jewels!
    • Stirky
      Diagram for 6497 motion works

      By Stirky · Posted

      Thanks Jon.
    • Jon
      Diagram for 6497 motion works

      By Jon · Posted

      Great diagram with the teeth and pinion count. Simple way to reduce the speed of the hour wheel by the 12:1 minute wheel. Genius and yet so simple. Always good to reinforce the principal by what you have done in your drawing. Keep doing that. I had a drawing on my wall for years showing me this which is very similar to the drawing you have done. Here's a formula to work out the beats per hour of a watch movement. The movement's BPH is dictated by the wheel teeth and pinion count and the hairspring being vibrated to the correct BPH by finding the pinning up point on the hairspring using a vibrating tool.  The reason in the formula there is X2 on the top line is because there are two pallet stones.
    • DDean
      Incabloc Lyre Spring & Low Earth Orbit

      By DDean · Posted

      So I just wanted to say "thank you" again.  The angle is the key bit it seems and yes, it did basically just fall, or float, back into position when I got it lined up just right. I had meant to add that now that I see how it goes in, I totally see how it came out in the first place, and that whomever cloned the original movement didn't pay much attention to the fine details around the setting or how it interfaces with the balance cock or the "rings" on the regulator and/or stud carrier arms.
×
×
  • Create New...