In a layout drawing, popularly referred to as 'MS3972/3', Harrison indicates that the mean of the start of impulse torque arms should be two thirds of the mean of the end of impulse torque arms. This is evident from three equally spaced points, verified as such by Harrison's annotations '1',' 2' and '3', point '1' being at the same equal spacing from the escapement frame arbor axis. See YouTube, username 'glathoppa', video 'Grasshopper Escapement' for more.
@glathoppa Nice attempt at self-promotion, Mr. Heskin. I have indeed read your publications. They are useful but they miss a key element of the basic escapement mechanics. Perhaps if you read Grimthorpe more carefully and compared a grasshopper to a gravity escapement, you might understand..... P.S. I'm an amateur who thinks tinkering with clocks is fun. Aficionado types such as yourself tend to spoil that. Please peddle your snobbery and history books elsewhere.....
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In a layout drawing, popularly referred to as 'MS3972/3', Harrison indicates that the mean of the start of impulse torque arms should be two thirds of the mean of the end of impulse torque arms. This is evident from three equally spaced points, verified as such by Harrison's annotations '1',' 2' and '3', point '1' being at the same equal spacing from the escapement frame arbor axis. See YouTube, username 'glathoppa', video 'Grasshopper Escapement' for more.
glathoppa 3 days ago
@glathoppa Nice attempt at self-promotion, Mr. Heskin. I have indeed read your publications. They are useful but they miss a key element of the basic escapement mechanics. Perhaps if you read Grimthorpe more carefully and compared a grasshopper to a gravity escapement, you might understand..... P.S. I'm an amateur who thinks tinkering with clocks is fun. Aficionado types such as yourself tend to spoil that. Please peddle your snobbery and history books elsewhere.....
phoenixman1961 2 days ago
Comment removed
doobydooby223 3 days ago