Re: New idea+model shows interesting resaults!


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Posted by Scott Ellis (216.87.95.64) on March 04, 2002 at 20:47:04:

In Reply to: New idea+model shows interesting resaults! posted by Davis Landstrom on March 04, 2002 at 08:10:04:

That's an interesting idea, Davis. Thanks for sharing it with us. Good luck on your testing. Hope you'll keep us posted.
-Scott

: I have recently come up with an interesting idea and an interesting model of an over ballencing wheel.

: It was the Cowlishaw 4 rolling weight idea that made me think, I know that this on it's own will not work, however, I thought what if I were to construct 2 of those wheels and make them share a common axis, side by side. One of the wheels would be possitioned a quarter of a turn in advance of the other. The wheel whose weights have rolled into a possition where it can over ballance will drag the other wheel around into a possition where by it's weights can slide, it can over ballance and drag the other wheel around. I constructed a small model, using 2 perspex disks stuck together and mounted on a bearing and coins which I sticky taped into possition to represent the weights. (There were no moving parts on this model) I possitioned the wheel in it's starting possition and let go, it rotated, gaining enough momentum to create a gradient which potentialy would have allowed the next set of weights to roll into over ballencing possition, however the weights were fixed so couldn't move.

: The time in which the momentum of the wheel would allow it to be in a possition where by it could over ballance was short. To ensure that it stays in that possition untill the weights roll and allow it to overballance I shall employ a shallow incrament ratcheting mechanism, allowing the wheel to rotate with little resistance in one direction but not the other. The static model is interesting and I might well persue this in proper moving part form.




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