Pivot repair

[Maurice Cox 1Participant @mauricecox1]

I have just dismantled a wall clock, made 1880, that came to me from my grandfather. I need to replace the fusee cord, which I last did when I was twelve years old. When I took it apart, I found that pivot on one end of one of the spindle, next to a 2" brass gear, has worn a groove all round to about half the original diameter. The pivot was originally 0.052" in diameter, worn down to 0.036".From the gear face to the end of the pivot is 0.200, with the working diameter being 0.148".

I thought I could repair this by holding the complete spindle assembly in a collet, gripping the teeth of the 1/4" pinion behind the gear, removing the remains of the pivot, and fitting new pivot material held with Loctite. I would then turn and polish it to size. Is this a reasonable way to proceed please? If so, how deeply should I drill the hole to take the new steel?

Thanks for any help or advice

Maurice Cox

[Maurice Cox 1Participant @mauricecox1]

[roy entwistleParticipant @royentwistle24699]

That is the usual way to effect a repair. I would drill the hole about 1 1/2 to twice the diameter of the new insert

If using Locktite don't forget to fie a small flat on it to let the air out

Roy

[Michael GilliganParticipant @michaelgilligan61133]

Maurice,

May I recommend this old [and reassuringly brief] little book:

Text here: **LINK**

and if you scroll down to the EPUB version, it has the images.

**LINK**

MichaelG.

[Maurice Cox 1Participant @mauricecox1]

Thanks for the feedback gents. I shall now proceed with an easy mind.

Regards Maurice

[David NobleParticipant @davidnoble71990]

Just to hi-jack the thread, Thank you for the link Michael, very interesting.

David

[Michael GilliganParticipant @michaelgilligan61133]

You're very welcome, David

It's wonderful that some of these old texts are being made available

… We have so much to learn from how things were done back then.

MichaelG.

[Author]

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