WChr2

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Uploaded by on May 21, 2009

Lego Clock Escapement WChr2.
Chronometer escapement with pendulum.
See also WChr1 and WChr3.
See als0 YouTube/horolophile/Chronometer

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Science & Technology

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Uploader Comments (BenVanDeWaal)

  • very nice! 5* but i think u had more going on than needed

  • That is true. See the very elegant solution bu 'horolophile'.

  • Thank you for the explanation. As with other of your escapements, it is not always apparent how the pendulum is being impulsed. I guess, as with most escapements (Lego or otherwise), the lack of big obvious hits of pieces leads to a more precise, and more efficient device. I am always amazed by your escapements. One of these days I will post a few of mine. They are less refined (think those big obvious hits) but they get the job done. Maybe you would have some advice for improvements.

  • Indeed it is difficult to see how the pendulum is impulsed. 'Dirtboy101' asked the same question; see my answers below.

    Of course it is very important to disturb the pendulum as little as possible, which means short, preferrably non-sliding, contacts, with the contactpoints having approximately the same speed to avoid blunt collisions (the ideal clock would not give tic-tacs). Some of these requirements are approached by the chronometer (better in 'horolophile's then in mine).

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All Comments (8)

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  • @DavidBLt34 Thank you again for drawing my attention to the 14-t saw blade. I have used it now in escapement W17. It works well, apart from the fact that you have to glue a bush to it to make it fit an axis tightly.

    Ben

  • David,

    I did not know there was a wheel like this; thanks for the tip. However, I don't think it is very usefull, because the teeth are truncated with a very small slope. The leading edge of the teeth should be radial to make for a good Graham wheel. But I think it will do for W12.3 or WChr3. Success, Ben.

  • Oh, I see. Nice model!

  • Look at the lower middle of the video. Here the pendulum gets it's cick from the corner of a tooth. Indeed it is difficult to see, because the contact brick (pallet) is black, rather than red. You can see that when it passes the rim of the table. I did not have a red brick with a smooth face.

  • Well what I'm saying, and this doesn't apply to all clocks, is that the pendulum and escape wheel both use the weight in a sort of give/take relationship, but in this device, I fail to find an indication of what the escape wheel does for the pendulum.

  • No, becaue the pendulum is impulsed by the escapewheel, and the escapewheel is powered by a weight. The clock stops when the weight reaches the ground.

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