Dave wrote:- "The attached photos confirm that “Tertius Leonardo” is alive and well with a hearty tic
Why Leonardo - hopefully the front timber frame has a likeness to the Leonardo DaVinci sketch of Vitruvian Man, not sure how we ended up with that shape, it just developed over 3 to 4 weeks.
Despite all that - the current family nickname is “Woody”
Woody is keeping good time - best achieved accuracy of about one minute in 24 hours
The pulleys give a winding of over 3 days - just about twice a week
I managed to gradually reduce the weights to 2.7 Kg - equivalent to 1.35 kg in your design