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Author Topic: 1939 Gravity Power - multiply power by 1200%  (Read 443124 times)

AB Hammer

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #390 on: July 06, 2014, 11:36:33 PM »
Just adding image here so I can post it on EF....


I asked my question about the math here...
http://physicshelpforum.com/showthread.php?p=26402#post26402
they're no help.


Added more technical image of drive mechanism... (Valnor or is it Artoj to thank)
Edit: replaced picture with a more (in my opinion) accurate one...

Agreed,  A very nice and looks accurate diagram.

ARMCORTEX

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #391 on: July 07, 2014, 12:20:08 AM »
Not for you lol, you are not the project builder.

I am a machinist in training, I probably could be the project builder.

Yeah thats right, I'M the leader.

Go out there and organize me a fund raiser, then you will be useful.

Its gonna be made of metal and 6 foot high.

i_ron

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #392 on: July 07, 2014, 01:38:17 AM »
Not for you lol, you are not the project builder.

I am a machinist in training, I probably could be the project builder.

Yeah thats right, I'M the leader.

Go out there and organize me a fund raiser, then you will be useful.

Its gonna be made of metal and 6 foot high.




Lawrence..You told me, after being banned from the last group, that you were going to behave
and become Mr Nice Guy...when is this going to take place... ever?


Ron
 


ARMCORTEX

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #393 on: July 07, 2014, 01:55:18 AM »
What are you saying man, I'm nice guy, nice in my own special way, evil-nice.

I say, beware of the nice guy who is too nice.

I am the same alignement as Bessler.




noonespecial

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #394 on: July 07, 2014, 02:08:39 AM »
Wouldn't the rotation result in a flat horizontal rotation?

d3x0r

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #395 on: July 07, 2014, 03:02:58 AM »
Wouldn't the rotation result in a flat horizontal rotation?
Yes... other than from a stop, first the top is moved, which causes the weight to go up by roughly (sin(angle)*B*r/A) [only works for angles less than 90 degrees, if you were to move the top of A 180 degees the sin would be 0 again and the equation fail... but at that point the mass B would be highest if you didn't allow the axle to turn), and will turn the B shaft slightly, but now the mass is higher and can fall, the fall will be deflected by being on the rigid bar B and will turn A a greater distance than it was raised (assuming r is less than 1/2A or something...)... and continuing to move the top of A around the circle will keep it ahead, leaving B to continuously fall.... and it will be apparently a smooth circle, but really there will be a up/down bobbing of the mass.  The acceleration will cause the mass to ahead of the angle at the top of the shaft which will cause it to be higher and start to fall backward, which will end up self retarding until it is again lagged behind the angle of rotation of A around the circle.


Consider you're not applying the rotation to A at the same time, only a translation, the gravitity is pulling c (COM/COG center of mass/gravity) down to create the torque/turning of axle A. 


Edit: Playing with my rough spreadsheet, as the angle of rotation goes down, the distance the mass travels around the axel goes up exponentially... like a 5 degree turn is 158x around the circle vs height raised 1 degree is 1780x and 0.1 degrees is
56286.97213 times the height raised.... what this means, is that although it goes up only a little ways, it has a very long time to fall back down since most of the acceleration will be translated to torque/motion around the circle... and longer at shorter angles.... and probably my math is way off somewhere... doesn't look like it...[/size][/font]

centraflow

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #396 on: July 07, 2014, 06:08:55 PM »
This is how the top drive works, it is interreactive with the middle weight, which is in turn interreactive with the bottom weight/load.


Simple but effective


regards


Mike 8)




turbogt16v

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #397 on: July 07, 2014, 06:33:01 PM »
i have been thinking a loot lately on output,when  power is reduced from
the device  equal or greater than input it falls out of sinc or stops.

would it be more effective to drain power from the first weight as it
is helped by second weight any way

centraflow

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #398 on: July 07, 2014, 06:39:37 PM »
More load produces more torque in the machine, quite brilliant, also it can't be over loaded, as more load is applied, the top lever will move more toward the center axis of the gimbal, when it hits that center then the drive just turns on the end of the lever.


It seems the machine is totally load reactive


regards


Mike 8)

RMatt

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #399 on: July 09, 2014, 03:38:29 AM »
Why the extra large oversized pic?

d3x0r

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #400 on: July 09, 2014, 01:05:33 PM »
*sigh*
Got my build mostly done... first day was too wobbly, had to add some supports at the bottom, now the frame is rigid enough...
My drive bar... well I need to reinforce it, the weight on the end makes it flex in the middle, which results in the mass actually at a 0 angle on the main axis.


I found a plate used to make like swivel chairs...
http://www.homedepot.com/p/Everbilt-6-in-Lazy-Susan-Turntable-49548/203661089


which inside is a wheel on the end of the main shaft, and then attach a crossbar so as the axel turns, it moves the swivel plate, which makes the axis tip... which should make it a self runner :)  I'm sure it will self destruct as soon as I get all these kinks worked out, since there is no clutching, and it's just a small dimple on the end it's sitting in... already was playing with getting the flex out of the bar and it toppled.  Have to get some patio blocks or something to add some mass to hold the frame down.

d3x0r

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #401 on: July 10, 2014, 07:11:23 AM »
I reinforced my pipe with basically a guy wire to the top of the axle and a ways out on the weight shaft... then reconsidered that the flex was actually increasing the angle not decreasing like I had indicated... but, keeping it square is good anyway.


I've been experimenting with this trying to fill in the variables of the math... the length of axle that is below the rod B sticking off determines how much the weight gets raised... the length of rod above B (maybe the total axle length) determines how much force is required to lift m. 


The top swivel plate turns very freely... and it has a wheel that goes around very freely within the ring.  I attached a plate to the top of the axle and used lock washers so it turns exactly with the axle.... I tried various angles and configurations... and if I manually keep the tilt off-center, then the weight falls, and turns the shaft, which freely turns the swivel plate... and if I keep it at a constant(apparent) distance from one of the posts on the plate, then it goes and keeps accelerating... but if I tie it to the plate at the same distance it stops.   Something about equal and opposites... I guess putting the backwards load on the swivel plate means it can't actually go forward...  Even if I tie it so it actually is 90 degrees and a consistent lean... not sure where all the force goes but it doesn't generate rotation.


If I put a lot of pressure inward on the swivel plate it doesn't really turn any more difficult....


Conclusion: a single mass doesn't help.
Adding a second weight with the skinner offset plate... I dunno... could add reactive power as part of the system... otherwise it's just a flywheel... that large skinner machine would certainly store a lot of potential energy....

shylo

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #402 on: July 11, 2014, 12:12:10 AM »
The top drive is like centraflow drew.
Draw a plumb line from the centre of the gimmble to the center of the upper input pulley.(if the clip loads)
Everything needs to be lined up .
There is a cross bar that joins the 2 inputs ,180 degrees apart.
This connection gives the illusion of an agitator.
The upper shaft that connects to the translation plate is rotating, only because it is connected to the outside of a pulley.


seychelles

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #403 on: July 11, 2014, 02:59:18 PM »
HI ALL THE TOP MECHANISM IS AS PER ATTACHMENT..

ARMCORTEX

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Re: 1939 Gravity Power - multiply power by 1200%
« Reply #404 on: July 12, 2014, 07:46:57 PM »
The elliptical method I have shown in this thread is the best for homemade precision builds.

Good enough is enemy of the best, old engineers think this.

Someguy made a nice build on EF, but his drive seems to have problems.

Seychelles, I dont understand the middle thin chain with the arrows, wtf  do you mean.

Plz add another view and thickness.

Why do you think this is better than individually controlled and electronic feedback ?? You add more more unncecessary mass and longer chains.

How  does this mechanism defeat the property that things seem to slow down and go out of sinch ( since you are faster) when a future toaster is connected.