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Originally posted by JayinAR
I mean, the gears could be frictionless and they may spin forever, but you would just have a frictionless gearing system. You still have to plug into the machine to draw energy from it and that is where you would introduce the friction. It wouldn't be perpetual at that point, but it would be Uber efficient.
I readily admit that I may be completely wrong. It's just how I understand it.
Originally posted by LordBucket
reply to post by rickyrrr
I am resisting my urge to dismiss the idea entirely
I notice you're replying to my first post. I'll answer your questions, but after some additional thought I'm less certain the idea would work for reasons described in this followup post. Please forgive my intial enthusiasm if this proves less than useful. I prefer to keep my mind open to testing new possibilities rather than simply accept truths and "laws" simply because somebody else said so.
are the cylinders mounted on shafts so that they
can only rotate?
There are many ways it could be built, but here's one possibillity:
Generally speaking, the cylinders need to be able to move towards and away from each other. This is, after all, a piston. Imagine two cylinders with their flat edges facing each other. Both cylinders are speared through their center by guiding rods running through them. One is allowed free motion back and forth along the cylinder, the other is allowed to rotate.
Posistion 1: Magnets attracting
Posistion 2: Magnets repelling:
Note that the guiding rods are not one solid piece all the way through. One cylinder must be able to rotate, while the other must be mounted so that left-right motion is unrestricted, but it cannot rotate. In the above, the cylinder of the left rotates, the cylinder on the right moves back and forth. Since the one on the left only needs to rotate, it can be mounted exclusively by the guiding rod. Since the one on the right doesn't need to rotate, you can cut a length along its underside and attach it to the frame on something that allows it to slide.
However, the particulars of the physical construction aren't really important. Again, it could be built in any of several ways. For example, you'd probably want to rotate the entire thing 90 degrees to reduce friction from the guiding rods. The important question to answer is whether overcoming the repulsion necessary to rotate the cylinder costs more energy than the piston can generate. Which, the more I think about it, the more I think it would.
how exactly do they attract?
Imagine the "coins" in the video as being a "slice" of the above cylinders. Looking directly on to the flat edge of a cylinder, alternate magnetic poles every 15 degrees or so. In position 1, the cylinders are rotated such that every south is next to a north in the other cylinder. In position 2, the cylinders are rotated such that matching poles are in line.
When you rotate one cylinder, the two cylinders will alternately attract and repell one another.
I am not sure how they will make it past 360 degrees.
Same way the wheels on your car do?
If energy cost of rotating one cylinder is less than what you can generate from the back and forth motion of the other cylinder, you have a free energy machine. If it isn't, you have a linear actuator.
Originally posted by LordBucket
reply to post by LordBucket
no complex pole arrangement should be needed.
...but come to think of it, it's not a complex arrangement at all. Simply alternate positive and negative around the cylinder. 15 degrees is positive, 30 degrees is negative, 45 posistive, etc. Simply rotate it and you have a piston.
Originally posted by whattheh
This is the future of space travel if they get it right.
Attract to the magnetic field of one planet and repel away from the magnetic field of another.
This could be huge.