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https://drive.google.com/file/d/1FyELVhRzXZyuoM0fcvZI6UvbApjnmQ_a/view?usp=drivesdk

Why couldn't you add two of these to either side of each piston and add a flywheel to the rotor? Manual hand crank to start? Aka the springs will contribute energy that is maintained by the flywheel that then perpetuates itself until the springs are exhausted or the load exceeds the capacity... But that would be in cars and bikes right? Why doesn't that work?

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  • $\begingroup$ the video does not play ... sounds like you are describing a perpetual motion machine $\endgroup$
    – jsotola
    Commented Jul 14, 2022 at 4:09
  • $\begingroup$ Check out Dual Mass Flywheel. $\endgroup$
    – Solar Mike
    Commented Jul 14, 2022 at 7:27
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    $\begingroup$ what does an exhausted spring mean? do you know how springs work? $\endgroup$ Commented Jul 14, 2022 at 11:25
  • $\begingroup$ FWIW if you took two mainspring + hairspring assemblies from mechanical watches you could drive the reciprocating mass until the mainsprings ran down. Take a look at Bacigalupi's "Windup Girl" for a post-apocalyptic view of bio-spring-powered vehicles. $\endgroup$ Commented Jul 14, 2022 at 11:49
  • $\begingroup$ Hard to understand what you are asking if this is not about perpetual motion. If it is, then please go attempt it yourself. Practitioners in engineering generally have faith in the laws of thermodynamics. If you do not, I suspect you need more experience. $\endgroup$
    – Abel
    Commented Jul 14, 2022 at 11:49

2 Answers 2

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[The video shows a weight on a spring being pushed and then bouncing left and right repeatedly]

Because if you make the spring push on a flywheel, or a piston, it stops bouncing.

It is like you spin a bike wheel with your hand, you see that it spins for a long time and you ask: why don't we connect it to a generator? Well, you can, but when the generator produces electricity it makes the wheel slow down and it won't spin for a long time.

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  • $\begingroup$ I tried finding the other video showing a guy do it manually with a finger on a larger system, it's very easy, just push down a bit when it's on the downward cycle, the piston/flywheel combo just stores the energy, I guess mentioning the central mass has to have some weight to it is important, it would not work if the central mass was lightweight... $\endgroup$ Commented Jul 15, 2022 at 1:47
  • $\begingroup$ m.youtube.com/watch?v=jewSVEBkI_s $\endgroup$ Commented Jul 15, 2022 at 1:47
  • $\begingroup$ @JacobEdward when you connect a generator and a lightbulb to the flywheel, it will make the flywheel slow down. Then the guy will have to push harder to speed it back up. $\endgroup$ Commented Jul 15, 2022 at 11:13
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The video isn't showing any work, it's more akin to a pendulum. Try to get work out of a pendulum and you end up with a weight hanging straight down. You have to put energy into a system to take energy out.

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  • $\begingroup$ m.youtube.com/watch?v=jewSVEBkI_s $\endgroup$ Commented Jul 15, 2022 at 1:48
  • $\begingroup$ I believe that shows how to put energy into the system in order to get more out of it $\endgroup$ Commented Jul 15, 2022 at 1:48
  • $\begingroup$ I tried finding the other video showing a guy do it manually with a finger on a larger system, it's very easy, just push down a bit when it's on the downward cycle, the piston/flywheel combo just stores the energy, I guess mentioning the central mass has to have some weight to it is important, it would not work if the central mass was lightweight... $\endgroup$ Commented Jul 15, 2022 at 1:49
  • $\begingroup$ @JacobEdward no, you can't get energy out of a system via magnets, no matter how much someone says it's "resonating." Every bit of energy you get out of something has to be put in first, and you have to put in more than you will get out. Anything else is perpetual motion, and is a scam. $\endgroup$
    – Tiger Guy
    Commented Jul 15, 2022 at 3:24
  • $\begingroup$ @JacobEdward this experiment isn't getting energy out of the system. Yes you can store energy in this kind of system but when you get the energy out then the system stops moving. $\endgroup$ Commented Jul 15, 2022 at 12:02

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