Jump to content

Is Welby 400 day clock made by Kundo?


Recommended Posts

11 minutes ago, HectorLooi said:

You are not a cowboy unless you have Stetson, rattlesnake skin boots and a Colt Peacemaker.

Quote

My boots are ostrich, my hat is not a Stetson but it is ornamented with a Buffalo Nickel hat band, and when I want accuracy, I carry my vintage Winchester Model 94 30-30!

Back to clocks...the modifications to the suspension spring worked. It is now running slow with the pendulum fully extended. I will set it at mid position and test today

 

  • Like 1
Link to comment
Share on other sites

1 hour ago, LittleWatchShop said:

A short update: I have been able to test the extremes of the pendulum and proven that I can make it too fast or too slow, so I will be able to regulate it. 

"Don't try to understand 'em, just rope and throw and brand 'em"

Whomever gets this reference wins extra points!

Are talking about cattle or the other species that is impossible to understand? 

Link to comment
Share on other sites

It dawned on me this morning that I can speed up my calibration by figuring out how many periods of the pendulum cause one full rotation of the minute hand!  This was a blinding glimpse of the obvious for me, old hat for you old hands at this.

Escape wheel has 20 teeth.  The pinion on the escape wheel has 8 teeth and the minute wheel has 96 teeth, so it takes 12 rotations of the escape wheel in one hour.  The pendulum must oscillate 10 cycles for one rotation of the escape wheel thus 120 periods of the pendulum to turn the minute hand one hour.  So that means that in one minute the pendulum rotates two full periods.

I just count the periods while timing with a stop watch...that will get me close!

Link to comment
Share on other sites

I remember donkeys years one I was working on the s/p according to the book was wrong I made a note of it in the book. It is more then likely the same thing has happened to you. Nice to know you have sorted it and the clock is working well. 

  • Haha 1
Link to comment
Share on other sites

1 hour ago, oldhippy said:

I remember donkeys years one I was working on the s/p according to the book was wrong I made a note of it in the book. It is more then likely the same thing has happened to you. Nice to know you have sorted it and the clock is working well. 

Donkeys years ago not heard that phrase for a long time 😂 

Link to comment
Share on other sites

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

    • You often see the term used on old watch part boxes.  Staffs for bracelet watches, timing washers for bracelet wstches etc.
    • The Boro has changed quite a lot over the last 20 years, and not for the better. I actually moved out of the town 15 years ago to a small village not far away. Thanks for the pdf! Looks a great read. I'll get it printed today and put it on my work bench!
    • Not having all the fancy equipment, this is a way I came up with. I never said it was the best, the most ideal or the safest way. Working on balances is always a delicate task whereby full concentration & common sense should prevail. I was well aware of the "dangers" / short comings involved, hence my "warnings", as quoted above. The balance wheel of the Omega was nice true, flat and one could clearly see how much gap there was left before the grinding wheel would touch the balance wheel. I stopped when the generously applied diamond paste started to touch the rim of the balance wheel, which turned out to be with a seat thickness left of 0.1mm. Tapping the remainder of the staff out went easy and flawless. My idea of penning this article was to show/share a way which, in my case, perfectly succeeded. If deemed to risky, or if the balance wheel is not true or has a wobble, other methods have to be followed.
    • I loved his explanation of a teardown 😅 Ex military Richard Perrett, pretty knowledgeable guy.
    • I also see a bit of danger for the wheel, at least you have to keep away from it and may get a too thick rest ring. My rest rings are about 0.05 mm. Better way would be a grinding wheel touching the staff with its circumference. Frank
×
×
  • Create New...