NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Leap seconds at Big Ben.
From: Bill Morris
Date: 2009 Jan 1, 11:32 -0800
From: Bill Morris
Date: 2009 Jan 1, 11:32 -0800
The regulating weight is usually half to two thirds of the way up the pendulum. It has maximum effect at the half-way point, but it looks better a little higher. Adding weights to the top of the pendulum bob does work, but they have to be heavier. On the home-made regulator clock whose picture I include as an attachment, I use increments of 100 milligrams and can achieve a rate of two or three seconds a month, but as the brass-compensated Invar pendulum rod is not (yet) correctly compensated, the rate changes with the season. Bill Morris --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
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