My Invention

[zoelra]

Ok, here is the video.
The first part of the video is with the weights being even.  You can see the mechanism drops slightly on the bob side.  When weight is added to the counter weight, that side becomes heavier and the mechanism moves to reset the bob.

[johnny874]

Ok, here is the video.
The first part of the video is with the weights being even.  You can see the mechanism drops slightly on the bob side.  When weight is added to the counter weight, that side becomes heavier and the mechanism moves to reset the bob.

  Rick,
There is something I have thought of. Can you try running the line from the pulley on the left to directly to the swinging weight.
It won't lift it As high, but it would pull it in the direction it is swinging. And this would be with  one to one weight.

                                                                                                                                                   Jim

edited to dd; it should lift the swinging weight close to a 45 degree angle.

[zoelra]

I know the angle of the pendulum shaft is not at 45 degrees, but is the cord run correctly?

Also, I'm sure you had a chance to view the video, with a little extra weight on the counter weight side, the reset works.  I have to go back and read my original post to you, but I may have misspoke about the weight and distance relationships.  My early tests used a 5lb weight for the counter weight and a 2.5lb weight for the bob.  I dropped the pendulum from a level position.  At the bottom of the pendulum swing, the down force was

5lb (CF of 2X weight of bob) + 2.5lb (weight of bob) = 7.5lb

This lifted the counter weight of 5lb.

What I am getting at here is if the counter weight weighs more than the bob, the reset looks like it could work in this scenario.  I guess moving the cord attach position from the center of the counter weight to a position closer to the main lever pivot point would also increase the force, but it would also reduce the distance traveled.  A future test will show this.

Anyway, your reset approach is looking good !!!!

[zoelra]

I need to make a YouTube account so I can post so longer running videos.

[johnny874]

  Rick,
You might be pleasantly surprised. By pulling the pendulum with the pulley over tbe counter weight, it could move the pendulum further.
I do like your set up. I'm kind of surprised someone hasn't thought of a test set up like yours before now.

   Jim

edited to add; yep, I've seen your video. I think I'm going to build something like you have to do some tests with.