Design Conclusion
I asked Clayton to see if I had made any silly mistakes in my variations and he commented that he thought I had taken his Planetary idea and therefore made the design very complex! I had not realised that he had used the idea, original built in the1840s by Aaron Crane, in three of this clocks. But he has gone for the cam version, which is not appropriate for an 'open' clock as it hides the rest of the mechanism. I have opted for the wheeled one, as it is open and more attractive. Otherwise he did not spot any obvious errors in my assumptions.
I should also point out that the Leverage Pulley system came from an old turret clock where there was a limited weight drop length - and it has the advantage of using less pieces than the normal compound system.
I must now decide on a way forward and prepare in the hope that UPS will eventually deliver the plans.
Summary
I shall initially try and build the simplest version, with no Hour hand and the 42+64 degree frame, and see how that goes.
In parallel I shall try and prototype the Clock Face as I have no plans for that and I believe the dimensions are pretty critical.
All my tools are 40+ years old. So my first task is to see how wobbly the ancient drill is and how inaccurate my cheap drill stand is!
I also need to construct a screwed draw slider, so that I can accurately move pieces along my workbench - for positioning the drill and also the sanding wheel.
I do not think that I can accurately measure, so I probably need to construct a Proportional Measurer to allow intervals of 0.1mm, or less, to be easily made.
So on to preparation - all important. .
Next page
.