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Gravity powered devices => Gravity powered devices => Topic started by: AlanA on March 31, 2012, 04:56:46 PM

Title: Centrifugal force - is it OU?
Post by: AlanA on March 31, 2012, 04:56:46 PM
Hi everybody,

may be some of the users here know this video:

http://www.youtube.com/watch?v=9HX_nnqv9_o

I found the video remarkable. Unlike the Milkovic Pendulum Device, this devise allows for full rotation of the input mass and does not stops at every roation.
What are you thinking?
Title: Re: Centrifugal force - is it OU?
Post by: Low-Q on April 01, 2012, 01:09:22 PM
Hi everybody,

may be some of the users here know this video:

http://www.youtube.com/watch?v=9HX_nnqv9_o (http://www.youtube.com/watch?v=9HX_nnqv9_o)

I found the video remarkable. Unlike the Milkovic Pendulum Device, this devise allows for full rotation of the input mass and does not stops at every roation.
What are you thinking?
This is not over unity. It has been discussed before in another thread.


Vidar
Title: Re: Centrifugal force - is it OU?
Post by: AlanA on April 01, 2012, 01:18:34 PM
Hi Vidar,

where has this topic been dicussed before?

Over unity is a big and dangerous word.
As I understood this video it takes very less power to rotate the tire. And the toolbox starts to hop a lot ;-)
Title: Re: Centrifugal force - is it OU?
Post by: Low-Q on April 02, 2012, 12:22:34 PM
Hi Vidar,

where has this topic been dicussed before?

Over unity is a big and dangerous word.
As I understood this video it takes very less power to rotate the tire. And the toolbox starts to hop a lot ;-)
Here is the thread: http://www.overunity.com/12119/centripetal-force-yealds-over-unity/ (http://www.overunity.com/12119/centripetal-force-yealds-over-unity/). The tool box jumps up and down, but not without taking energy from rotation of the wheel.
The jump is probably 5cm or so. Say the tool box weights 50N there is at maximum 2.5J of energy transfered to the toolbox at every revolution. These 2.5J is average for each revolution of the wheel, so probably 0.1Watt (0.1J/s) is consumed by the tool box at all times - if each jump last for 40-50mS. Powering 0.1Watt continously by hand is bearly noticable (If noticable at all) when turning that wheel.


Vidar
Title: Re: Centrifugal force - is it OU?
Post by: Cloxxki on April 03, 2012, 12:04:49 AM
I replied in the video itself also.
I am not conviced at all. There is a lot of KE going into this system before the chest started jumping. And yes, it DOES give energy back to the wheel when it falls. It's called oscillation. To prove it doesn't, place the chest on a slow-rebound cushion (not springy), to prove me wrong.
Half a meter per revolution of the crash, times, say, an easy 5N of pressure. How many revs where those? How high is the chest lifted? You do the cals and tell me it's OU.
Title: Re: Centrifugal force - is it OU?
Post by: Low-Q on April 03, 2012, 04:07:02 PM
Just to add: If this was OU, the oscillation would sustained forever without input energy. But it doesn't. There is some feedback from the oscillation, but not equal or more than the input energy that is applied.
Maybe that was your point, Cloxxki?


Vidar