Designing and regulating a compound pendulum - NAWCC Forums
2013年3月21日 · the crutch will drive a slot in the wood rod (i.e., a brass crutch plate) the existing meter pendulum assy i plan on fine-tuning is as follows: - 37 1/8" of wood rod. - additional 1 1/8" of brass pendulum hanger at top (standard regulator 2 hanger) - 5 …
Compound pendulum with knife edge suspension - NAWCC Forums
2024年3月29日 · The inspiration for this clock will be the Burgess B2 clock (Martin Burgess was my mentor for my first clock started in 1981 - finished 2024 !) My design parameters so far are: 1) A 2 sec compound pendulum with knife edge suspension. 3) A skeleton tower of some sort.
compound pendulum - NAWCC Forums
Jan 26, 2004. #2. I'm interested in the theroy of the compound pendulum used in the swingers. I would like to know more about how the length of the pend is determed and how the suspension spring efects the rate and how the mov. case weight verses the lower weight is determened. I have made a few of these and some how have managed to get them ...
Compound Pendulum - NAWCC Forums
2012年12月22日 · A compound pendulum can work well, but not so good if gravity or some of the more unusual escapements. Regearing the train itself is of course another solution, but to move from a 2 seconds pendulum to a seconds pendulum would most likely necessitate changing 2 wheels and 2 pinions, as well as moving the center distances in the frame of the clock.
Compound Pendulum Clocks? - NAWCC Forums
2024年7月14日 · Hi - I just finished overhauling a Junghans swinger and it occurred to me to wonder if any clock makers used compound pendulums in their otherwise standard clocks (non-swingers). I can see advantages in that either the clocks can run longer for a given case height (the compound pendulum's slower rate) or the time spring can be smaller and still ...
ALL ABOUT PENDULUMS - NAWCC Forums
2013年7月9日 · A modification of the basic pendulum is the compound pendulum, which has a second bob ABOVE the suspension point, attached to the stick with an outrigger of some sort. [COMPOUND] View attachment 183650 The effect of adding the upper bob is to augment the mass of the lower bob. When the lower bob is bottomed out on its rating nut, and set at ...
How to Build a Compound Pendulum - NAWCC Forums
2013年4月8日 · I have a small tower clock -- missing its pendulum. I need to make one but a wheel count -- both by me and someone else independently -- shows that it needs an 80" pendulum. Tough for displaying the clock in the house! Can anyone either tell me how to design a compound pendulum or point me to a book that explains the design? Thanks. Frank
Contemplating a Compound Pendulum - NAWCC Forums
2011年12月27日 · It arrived in pieces. The only movement that would fit it was in two styles, one with a short pendulum and the other a long one. Neither would look good in the case window, so I thought it would be easier to go with the longer one and do a compound pendulum than try to 'lengthen' a too short pendulum.
Compound pendulum for tower movement - NAWCC Forums
2008年5月29日 · I have since found that it was designed by Elmer Dungan and made by his friend D.B. Johnson of Ambler PA in 1922. I have calculated the pendulum length at 13", too big for my house. I would like to experiment with a compound pendulum for it. I have been searching for photos or drawings of what other people have done.
“Aion” – Double Compound Pendulum Wooden Skeleton Clock
2023年8月10日 · The escapement was inspired by a desire to incorporate the "hypnotic" motion of the double compound pendulums used on Harrison's H1 clock into one of my clocks. However, I did not want the complexity of Harrison's Grasshopper escapement and realized that one could combine the Harrison double compound pendulum with a Graham deadbeat type escapement.