Hi Bepi, Reporting progress to date. I have been running my clock now for the last 4 days. To reiterate - I have a cast iron bob on 3/8" invar rod. The rod is magnetically impulsed about 100mm above t

In "Circular error and my pseudo-synchronome" you can see data showing an unexpected relationship between period and amplitude over a large swing range. I was expecting the circular error to show up i

Bepi, A few years ago I measured a Synchronome; case closed vs. case open. The change is quite immediate, dramatic, and easily measurable. You mentioned Q. Yes, the state of the glass case door will a

The objective here is to explore the possibility of measuring something useful by correlating period fluctuations between two clocks. Hence the second I in the name of the proposal, DPII, which stands

The old dear synchronome seems to be much better at measuring time than I was expecting. When I say measuring time here I mean intrinsically, with reference to its own internally produced noise. Then

Thanks to both ..... Geoff

Hi --- been on the group many years but for some reason of late any reply or post I make does not get through.....below is an example this week neither 13th or 15th post got through. Any ideas... Than

My reply posts not appearing for some reason will try again........ There are still some good images on the old excellent Horologix site...try here..... http://www.horologix.com/Suspension_Assembly.pd

Hello, I am restoring a tall Bulle no. 1614 which sits under a glass dome and it needs the pendulum suspension replacing. Did all the pendulum chops have a groove in one of each pair? As the chop thic

The IET archives in London just posted about a box of papers from Silvanus P Thompson, donated to the IET in 1917, titled: ‘Electric Clocks and Time-Indication III’, which illuminates Thompson’s inter

To better understand the previously reported tangent rule measurements I checked the circular error predictions on my synchronome and here are some results of that work. The following originates from

Nothing more fun than year end holidays to thinker with presents, this year is clocks. And I am out of the closet now, I completely electrified my synchronome. Out of frustration in trying to quantify

HI, I wondered if anyone would have a copy of the type 2 seconds switch set up instructions? That's the big style switch with the horizontal gravity arm, as opposed to the more common smaller vertical

Hello, This email message is a notification to let you know that the following files have been uploaded to the Files area of the synchronome1@groups.io group. /iSynchronome/electronics_V2.pdf Uploaded

Good Morning Everyone A less technical enquiry, this, in comparison to most of the chat recently: I am restoring a Synchronome Mk.1 clock. The number on the NRA plate is 1028, which dates it to someth

Hello there. I am a relatively new member to the group and have been fascinated by all the practical and theoretical science that is being discussed around the running and accuracy of a Synchronome Ma

The data I presented earlier on this blog, Chasing the Losses, about the energetics of my synchronome were obtained with a simple timer based on arduino uno whose clock is a ceramic oscillator. The qu

I have added an album on this clock plus a video https://youtu.be/AwUnphPE7io Graham

Dear All, This was mentioned a while back—I can now confirm that the new and revised second edition of Bob Miles’s Synchronome—Masters of Electrical Timekeeping is available for purchase. From soon af

Hi All, I got this request for information from an American collector friend. Jan wp.clockdoc.org I recently sold a 3/4 sec beating Synchronome on ebay to a California buyer and I have a question rega