A Beginners Clock

[BRIAN]

Re: The next project

Next item is a lantern pinion
Same set up with 80t gear to index 8 pins.



On test with its mating gear, works perfectly.




Brian.

 

[RLWP]

Re: The next project



Have you made a five leaf lantern pinion before Bruce? It looks a bit mean to me

Richard

 

[BRIAN]

Re: The next project

Hi Richard
On clocks of this type it is more common to have a 4 leaf pinion to drive the hour wheel.
but I dont like them, It leaves very little space in the centre for the arbor.
On this clock I have had to use numbers that I can index with the change wheels of the lathe.
Minimal tooling is what this clock is all about, so it can be made by somone new to the hobby.

Brian.

 

[RLWP]

Re: The next project

Well, it's infinitely better than a four leaf pinion!

I do understand and agree with your aims too, just curious about having only five leaves. If it works, it works!

Richard

 

[BRIAN]

Re: The next project

Hi Richard.

This gear and its partner must have a 12-1 ratio because it is part of the hands drive.

So even one tooth up on this pinion has a big efect on the size of all the other gears.

If I was making a better quality clock the answer is to make the teeth smaller and have more of them.

But this clock is made with one cutter ( minimal tooling again ) and this module is selected because it is tolerant of dirt, the cutter is easy to make, and the maths are easy to understand, with MOD 1 the PCD in mm is the same as the number of teeth.


Keeping the clock simple to make involves many inter-related problems.

Brian.

 

[BRIAN]

Re: The next project

The last pinion is now finished.



on test.



Assembly can now continue.)

Brian.

 

[BRIAN]

Re: The next project

Marking out the position for the next arbor using the depthing tool.



Slowly slowly.

Brian.

 

[BRIAN]

Re: The next project

The first trial assembly.



This pair run smooth so its on to the next.)

Brian.

 

[BRIAN]

Re: The next project

:happyhappy:
3rd Arbor fitted, thats the power train finished.




Brian.

 

[David S]

Re: The next project

Hi Brian, I repair old clock movements and prefer to make / repair parts rather than buying them. I have been following your progress. Very nice work indeed.. I often have to make tools etc in order to make repairs, but your craftsmanship is awesome.

David