angular linkage

[cyberdust]

There are many linkages, which double the lever, the torque, even a circular movement to transform it to a straight line. But I cannot find a linkage, that acts on the angle. I need a linkage, that will double the angular speed of a rod or of a rotational movement. Is there none? I can think of a gear, but that is not what I need. If that solved, I think I have found a solution ;)

Can you post some clever linkage, I will appreciate.

[broli]

Can you elaborate a bit more on these linkages. Because I for one have no clue what you're thinking.

[path_finder]

Dear cyberdust,
I understand well what you mean (I solved the same problem).
Here is an example of rotation advance/delay linkage, wich will give you the way:
Excel animation (*.xls file)
(right-click on the icon in the middle of the page for download, then open either MS-Excel either Linux/Gnumeric)
Then you have to move the cursor on the top of the diagram.

[primemignonite]

Dear cyberdust,

The linkage that you must find, is that one which amplifies energy.

Once found, you will be in-the-pink as well as the money.

Bessler did, so why not you??? (There, semi-rhetorical.)

James

[cyberdust]

I am thinking of a similar device like a pantograph or a Peaucellier-Lipkin linkage. In pantograph the length of a rod can be doubled, the distances etc. but the angles remain all the same. I do not expect to amplify the energy, though it will not harm me at all.

[mickegg]

Hi cyberdust

Perhaps something like this?

Regards

Mick

[broli]

Now I understand, thanks mick :p.

[cyberdust]

Yes, something like that. BTW- I made a try with Working Model, and it became a perpetual motion machine. ;) Another proof, WM is not to be trusted.

[mickegg]

If the angles need to be about a common point then by using the diagonal of the square sided parallelogram.

The pantograph?

Regards

Mick

[broli]

Share your wm2d file please.

[cyberdust]

I have only a demo version of wm2d, so I cannot post any file here. But it is easy to build your own file and see yourself what I saw. I have discovered, this happens only by "none air resistance". But then again, it will be no challenge to let it run in a vacuum. How much energy you'll get out, without stopping the perpetual motion, that's another question.

[broli]

Well if there's no resistance it'll just keep on turning. The thing we're looking for is getting it to keep on turning at a constant or even increasing speed while there's a load on it. In wm2d there are many ways to simulate a load. Just attach a pin friction script to the pin of the wheel or you can use a small weak counter torque. If the wheel keeps on turning then we're in business.

[graham]

Hi Cyberdust.
What you CAN do is Hit "Print Screen" key with your WM2D sim showing on your screen and then go into the "Paint" program in "Accessories" Hit "edit" > "paste".

Save it as a jpeg and then post it as an attachment to your post here.

Graham

[cyberdust]

This is an example. Yesterday it was easier to construct, today I had to make many tries.

Both have a weight of 60kg. At the beginning they are oscillating, closing the gap more and more, and finally it gets a push and are spinning for ever. Yesterday I let it run for many hours, thinking they were oscillating, and then will spin in the other direction. They kept the same direction of rotation.

[edit by scott: please attach your images to your posts and don't just link to them]