Jump to content

Replacing broken pivot.


HSL

Recommended Posts

Hello
I have a question about how to best remove an broken pivot from the arbor. It seems like the pivot is made of a hardened steel is pushed into a hole in the wheel arbor.
My plan is to use a split stake and remove the wheel and lantern pinion and then try to drill out the residues from the previous pivot and press in a new one.
I have a Lorch 6mm lathe and a EMCO UNIMAT 3 lathe to use in this operation but don't know which tool to use for the best result. I have been reading about people breaking of drills and so on in this operation. 
So now I wounder what would be the best way to proceed drilling out this pivot in your mind?
The wheel in question comes from a German HAU or in English HAC clock and runs the fly.
Here are some pictures of it..

 

 

Gear1.jpg

Gear2.jpg

Link to comment
Share on other sites

This subject has been covered on many occasions on the forum including by myself recently see below: However I was attempting to replace a French pivot of 0.50mm & I suspect yours is not as difficult although the same technics are applied or just search youtube which also has this subject covered.

 

Link to comment
Share on other sites

Looked at the videos in Clockboys link and think the Lorch with a drilling plate seems to be the way to go,
I have ordered 0.5 mm HSS drills and will give it a go this weekend.
Tried out a collet for the arbor and it seems to fit with the no:20.

IMG_20190225_194629.jpg

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.

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.



×
×
  • Create New...