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Author Topic: Gravity wheel of Krstan Pejic. This device works  (Read 60688 times)

Shokac

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Gravity wheel of Krstan Pejic. This device works
« on: March 26, 2014, 09:09:05 AM »
I do not know whether this is so far been reported, but this device works!


http://www.youtube.com/watch?v=39hVwNIRbNU

TinselKoala

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #1 on: March 26, 2014, 09:37:56 AM »
Of course it works! It has a huge BATTERY in it!


(Embedding and comments disabled. Why? Can't take the controversy? Tired of people demanding actual _measurements_ rather than the usual battery and bank of lights? The Electric Utility wondering why you haven't had to pay an electric bill since last summer? Makes perfect sense to me....)


Shokac

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #2 on: March 26, 2014, 10:06:30 AM »
Of course it works! It has a huge BATTERY in it!

Battery is only for start!
Device work without battery!

TinselKoala

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #3 on: March 26, 2014, 10:14:29 AM »
Battery is only for start!
Device work without battery!
Then why didn't he disconnect it!

If you were demonstrating such a device, you would disconnect the battery after start, right!

I know I would!


Even if I had a microphone in one hand, I would ask him to disconnect the battery so the camera can see it!

Shokac

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madddann

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #5 on: March 26, 2014, 11:36:48 AM »
For the curious...

... if I understood correctly, in the video he claims 1,5KW continuous output power...


Dann

gyulasun

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #6 on: March 26, 2014, 12:58:29 PM »
Hi Dann,

The machine shown in the two links below seems to be based on the same principle like the one in the above video:

http://www.politika.rs/rubrike/spektar/zivot-i-stil/Pomama-za-ekoloskim-agregatom.lt.html       and

http://doznajemo.com/2013/01/18/sa-jednom-baterijom-napaja-cijelu-kucu-strujom-revolucionarni-aparat-predstavljen-i-u-mostaru/

 This text: "Reč je o patentu trojice pronalazača koji kao inicijalnu energiju koristi jednosmernu struju iz baterije od 12 volti. Ona pokreće elektromotor, a ovaj preko posebnog prenosnog sistema pokreće generator koji preko ispravljača proizvodi naizmeničnu električnu energiju napona 230 volti. Manji deo generisane struje puni bateriju, a višak je spreman za sve potrošače na naponu od 220 volti. Tajna pronalaska koji omogućava da se energija iz baterije od 12 volti višestruku uveća leži u sistemu povezivanja i pretvaranja energije, kažu izumitelji."

is google translated with some corrections as: "According to the three inventors the initial energy uses direct current from a 12V battery. This powers an electric motor, and this drives a generator through a special transmission system that produces 230V AC via an AC adapter (inverter). A smaller part of the generated current charges the battery , and the surplus is ready for all consumers at a voltage of 220 volts . The secret of the invention that allows the energy from the 12V battery to multiply (to increase) lies in the system connectivity and conversion of energy, the inventors say."

So if you can agree with the text translation, then the 12V wiper motor you identified in your picture is the main driver for the transmission system and for the flywheel and then a car alternator is driven from this latter system. The car alternator gives about 12-13V DC output at 115-120 Amper at least or higher and this 12-13V DC drives the input side of an inverter able to convert the 1.5kW and then the 220-230V AC is available at the inverter output. Is this correct?

So it seems it all depends on the special transmission system (gear ratio) I suppose to "multiply" the input energy taken from the battery. IF you attempt to replicate such system, how will you go about to choose the "correct" gear ratio I wonder? Trial and error?

Thanks,  Gyula

MenofFather

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #7 on: March 26, 2014, 01:20:45 PM »
I do not know whether this is so far been reported, but this device works!


http://www.youtube.com/watch?v=39hVwNIRbNU
He did not mention, how long for him it work without charge battery?

MenofFather

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madddann

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #9 on: March 26, 2014, 01:57:25 PM »
Hello gyulasun!

Nice finds! All you wrote seems to be about correct (car alternator should output from 13,5V to 14,4V).

The team leader mentioned in the article is Milan Bojović and he is also one of the inventors mentioned in the patent posted by Shokac, so this seems like Krstan Pejić is in the team and the real inventor.

Well, about the gear ratio, I would try to deduce that from the video (for example measure the size of the alternator and then based on that would try to deduce the gear ratios)


Dann

Hi Dann,

The machine shown in the two links below seems to be based on the same principle like the one in the above video:

http://www.politika.rs/rubrike/spektar/zivot-i-stil/Pomama-za-ekoloskim-agregatom.lt.html       and

http://doznajemo.com/2013/01/18/sa-jednom-baterijom-napaja-cijelu-kucu-strujom-revolucionarni-aparat-predstavljen-i-u-mostaru/

 This text: "Reč je o patentu trojice pronalazača koji kao inicijalnu energiju koristi jednosmernu struju iz baterije od 12 volti. Ona pokreće elektromotor, a ovaj preko posebnog prenosnog sistema pokreće generator koji preko ispravljača proizvodi naizmeničnu električnu energiju napona 230 volti. Manji deo generisane struje puni bateriju, a višak je spreman za sve potrošače na naponu od 220 volti. Tajna pronalaska koji omogućava da se energija iz baterije od 12 volti višestruku uveća leži u sistemu povezivanja i pretvaranja energije, kažu izumitelji."

is google translated with some corrections as: "According to the three inventors the initial energy uses direct current from a 12V battery. This powers an electric motor, and this drives a generator through a special transmission system that produces 230V AC via an AC adapter (inverter). A smaller part of the generated current charges the battery , and the surplus is ready for all consumers at a voltage of 220 volts . The secret of the invention that allows the energy from the 12V battery to multiply (to increase) lies in the system connectivity and conversion of energy, the inventors say."

So if you can agree with the text translation, then the 12V wiper motor you identified in your picture is the main driver for the transmission system and for the flywheel and then a car alternator is driven from this latter system. The car alternator gives about 12-13V DC output at 115-120 Amper at least or higher and this 12-13V DC drives the input side of an inverter able to convert the 1.5kW and then the 220-230V AC is available at the inverter output. Is this correct?

So it seems it all depends on the special transmission system (gear ratio) I suppose to "multiply" the input energy taken from the battery. IF you attempt to replicate such system, how will you go about to choose the "correct" gear ratio I wonder? Trial and error?

Thanks,  Gyula

madddann

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #10 on: March 26, 2014, 02:12:47 PM »
That's not even too expensive... 587 USD maybe Sterling Allan would buy it  :) .

Here sells somthing like this [size=78%]http://ledd.satom.ru/p/1848917-ibp-dom-5000-vatt-bestoplivnyy/[/size]

gyulasun

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #11 on: March 26, 2014, 02:13:15 PM »
Hi Dann,

Yes it is a good idea to estimate the wheel sizes from the video and arrive at the ratio.
I wish you good luck.

Gyula

bboj

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #12 on: March 26, 2014, 03:13:13 PM »
He did not mention, how long for him it work without charge battery?


He said it can ran for as long as batterys life - a few years

Qwert

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #13 on: March 26, 2014, 03:23:12 PM »
The thread says "Gravity wheel". Where and how is gravity used in this contraption?

DreamThinkBuild

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Re: Gravity wheel of Krstan Pejic. This device works
« Reply #14 on: March 26, 2014, 06:54:51 PM »
Hi All,

In the video he mentions his first prototype which is briefly shown @ 2:27. I think this would give a better idea of pulley ratio since it looks like all bike rims are being used.

These are just estimates on the bike wheels from standard sizes which they seem closest too.

Flywheel - 26" diameter
To Alternator - 20" diameter
The small pulleys look to be 1-2" diameter
Drive Motor - 16-18" looks a little smaller than the 20" diameter

Windshield wiper motor is between 30-100rpm depending on voltage, it has high torque since it's wound almost like a winch motor.

Let's go with 40rpm as an example

40rpm @ 18" wheel to 2" pulley = 40*(18/2) = 360 rpm on flywheel shaft
360rpm @ 20" wheel to 2" pulley on alternator = 360*(20/2) = 3600rpm

Please correct if you see a mistake.