Jump to content

Hammer on Star Wheel

Willow

By Willow
in All Things Clocks

 Share

Recommended Posts

Willow WRT Addict

Willow

Posted
Posted

Hi hope everyone are keeping well, and managing to keep busy,  i have put clock back together and its striking on the hours ok the problem is the hammer  tab is stopping on the star wheel and i am right in thinking that the hammer should drop and the tab should between the teeth of the star, i am reluctant to mess with the hammer and star if it disturbs other things when there is no need thanks Willow

IMG_20200429_095430044.jpg

IMG_20200429_095328548.jpg

watchweasol Distinguished Member

watchweasol

Posted
Posted

Hi  I take it that the clock has been dismantled and the gathering pallet removed during the course of the repair. the problem is probably the relationship of the star wheel to the Gathering pallet and where it stops The video will give you some help.

 

 

Willow WRT Addict

Willow

Posted
  • Author
Posted

Hi Watchweasol thanks for replying so quick, no i didn't take of the gathering pallet i thought you didn't have to do that if there was nothing wrong with it. I have seen that video and i must say it freaked me out a bit, but i decided to give it a go but it was so tight i was scared i might break something.

Thanks Willow

nickelsilver Distinguished Member

nickelsilver

Posted
Posted

You can usually get it in adjustment by moving the gathering pallet. If you left it on during disassembly and reassembly there's still no guarantee that things are aligned. You can just pull the plates apart enough to shift the wheels around and hope that things get better, but easiest is really to remove the gathering pallet and place it in a good position.

 

To remove you want large levers, if you don't have that you can use screwdrivers turned so the side so they make almost parallel contact, and protect the plate with thin cardboard. Grabbing and twisting it off can work (with tape on your pliers), but I have seen well stuck ones twist the pivot right off.

  • Like 1
Willow WRT Addict

Willow

Posted
  • Author
Posted

Thanks nickelsilver hope things are ok  over their, i have a Hermle clock that i have for spares so i will it a try on that first, thanks for your input.

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.

×
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • RichardHarris123
      Hello from Denmark

      By RichardHarris123 · Posted

      Hello and welcome from Leeds, England. 
    • Birbdad
      Regulating is too touchy

      By Birbdad · Posted

      I agree with hector it's probably the regulator curve, it almost always is on these movements. So i work on these movements a lot and iv'e managed to fairly consistently get them running at like 50 degrees more amplitude than that with deltas in the 3 range and on the wrist deviations of sub 1 second a day. They ALWAYS require work to get there though. The main thing is shaping the regulator curve and this is really finnicky and definitely something you practice on a movement you don't care about when you're new (I'm still new) but if the hairspring is flat and the coils are evenly spaced and the regulator curve is properly shaped and it's pretty wild how accurate these movements can get.  But, it does sound like your regulator curve maybe needs a bit of reshaping. You can easily mess up the watch learning to do this so warning if you don't want to live with your current results but I"m not an expert, it's just speculation but there's a pretty easy way to check.  This is a good video showing how to see if your terminal curve is properly shaped. Just make sure the regulator pins are open when you test this.   He takes off the balance wheel to shape it. I do it with the movement disassembled but the balance on the mainplate. I use a homemade tool from a sharpened dental pic to do the adjustments (Tiny tiny TINY adjustments) and i use the regulator pins themselves to sorta brace the spring against to bend it very tiny amounts and just keep checking it by moving the regulator arm down it till it stops moving the hairspring. Taking off the balance wheel over and over again is a good way to slip and destroy your hairspring and will make the process way slower. I try to avoid removing the balance wheel from the cock it on these movements due to how difficult it is to get the hairspring stud back into the balance cock. It's super easy to slip and twist your spring then you got way worse problems.  Since these are mass manufactured and unadjusted the regulator curve is NEVER perfect but once you learn how to reshape them it's pretty easy to do and you can get REALLY low deltas with really low positional error and pretty remarkable accuracy.  Definitely with it powered down and the balance on the movement with both balance jewels in place look across the spring to see if it's perfectly flat, then check the regulator curve how he does it in the video. I would bet money even if it's not your main issue the regulator curve is not ideal also. 
    • Embezelled
      Where it begins

      By Embezelled · Posted

      Thanks. Damn, first breakage. This picture of the movement is from the sale listing.  
    • AdsettsEdberg
      Hello from Denmark

      By AdsettsEdberg · Posted

      Hello all, New member here, hoping  to gain knowledge about something that has been of interest for years.  Cheers!
    • AndyGSi
      Where it begins

      By AndyGSi · Posted

      So the stem is snapped and will need replacing but luckily there's enough left in the crown to unscrew without a problem. Will need to see photos of the movement to identify it.
×
×
  • Create New...