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Author Topic: Not Half Baked - Half built.  (Read 21132 times)

Ant Burr

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Re: Not Half Baked - Half built.
« Reply #15 on: September 29, 2007, 11:25:21 AM »
Quote from: hansvonlieven on September 04, 2007, 12:05:47 AM
G'day all,

This is nothing but a variation on a medieval flap wheel. It doesn't work.

Hans von Lieven

Here is a two armed version of 30 square.
The Joints move.
There is insufficent weight displacement on this two armed version.
2 arms 1 to 30 square
2 arms 1 to 30 1 arm can be seen.

An enclosed 2 arms at 55 incrementing squares should be enough to displace weight to make the wheel perpetually rotate.
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Ant Burr

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Re: Not Half Baked - Half built.
« Reply #16 on: September 29, 2007, 01:27:23 PM »
Quote from: Ant Burr on September 29, 2007, 11:25:21 AM
An enclosed 2 arms at 55 incrementing squares should be enough to displace weight to make the wheel perpetually rotate.

Ok... Here is the theory after playing with the two arms at 1 to 30 yesterday.

Pythagorean Triangle.
(http://viewbug.com/media/mediafiles/2007/09/29/item_3484_pythag.JPG)

The 'alpha' or start number & 'omega' the end number of each square is different.
(http://viewbug.com/media/mediafiles/2007/09/29/item_3485_pythag30.GIF)

Instead of measuring the physical line, measure the energy of that line.

The energy is 30, 30, 30.

Make a 3 arms at 1 to 30 square interlocking them closed round the axle. Insert a spring that allows movement from closed 3 to open 5.

My closed arm from 1 to 30 are 7 thick, measures 22cm
22cm=3
Therefore 5 = 36 2/3cm
Install a spring that allows that oscillation.

Three in one, it looks like an ariel.
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Ant Burr

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Re: Not Half Baked - Half built.
« Reply #17 on: October 03, 2007, 08:14:39 PM »
Update in photos...
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AB Hammer

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Re: Not Half Baked - Half built.
« Reply #18 on: October 04, 2007, 04:38:44 AM »
I am fairly new in this field but, I don't see any control of your machine. I am a blacksmith/armourer by trade of over 22 years and work with allot of moving parts duplicating the movement of the human body. I also know when a project is taking up to much time with little improvement. I would suggest to start with another project with more control, and then look back on this one to see if it is worth going back to.

I am working on a redo of my first project with hammer like arms, and to be truly honest I think I have solved the problem. This is the 4th time redoing it.

If you check half baked you will find one of my rejects, but there is still allot of control in it.
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Ant Burr

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Re: Not Half Baked - Half built.
« Reply #19 on: October 04, 2007, 12:15:44 PM »
Quote from: AB Hammer on October 04, 2007, 04:38:44 AM
I am fairly new in this field but, I don't see any control of your machine. I am a blacksmith/armourer by trade of over 22 years and work with allot of moving parts duplicating the movement of the human body. I also know when a project is taking up to much time with little improvement. I would suggest to start with another project with more control, and then look back on this one to see if it is worth going back to.

I am working on a redo of my first project with hammer like arms, and to be truly honest I think I have solved the problem. This is the 4th time redoing it.

If you check half baked you will find one of my rejects, but there is still allot of control in it.

Thanks I'll check it out later tonight.

I started seriously rebuilding after I noticed the kick on this large 18 square arm, this was enmeshed with metal bars 11 thick. The math suggest (a=2,b=a+1 a^2+b^2=c^2=13) it should be two at 13 thick, and not 11 thick. I can no longer spend any money on bars, so I am working with the bars I have.
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Ant Burr

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Re: Not Half Baked - Half built.
« Reply #20 on: October 04, 2007, 06:24:48 PM »
Quote from: AB Hammer on October 04, 2007, 04:38:44 AM
I don't see any control of your machine.

New video...

Prototype needs a spring and perhaps the weights need to be configured differently. I dunno but check out what happens when I close the arm manually.

http://www.metacafe.com/watch/853966/gravity_wheel/


Let me know what you think...
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Ant Burr

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Re: Not Half Baked - Half built.
« Reply #21 on: October 05, 2007, 02:44:07 AM »
The weights have now been reconfigured.

In the above video what I do a spring or a piece of elastic could do, if the spring/elastic was attached to the weight positioned opposite to the square wave.

When the weight drops the opposite arm closes causing displacement.
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shruggedatlas

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Re: Not Half Baked - Half built.
« Reply #22 on: October 05, 2007, 03:44:14 AM »
Quote from: Ant Burr on October 05, 2007, 02:44:07 AM
The weights have now been reconfigured.

In the above video what I do a spring or a piece of elastic could do, if the spring/elastic was attached to the weight positioned opposite to the square wave.

When the weight drops the opposite arm closes causing displacement.

I am not sure I get it.  If the spring or elastic is strong enough to pull whatever it is that it is pulling, why would it ever let go?  I think you are going to hit equilibrium quickly.
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Ant Burr

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Re: Not Half Baked - Half built.
« Reply #23 on: October 05, 2007, 04:08:56 AM »
Here is the picture rotated with what I am trying to describe.
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Pirate88179

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Re: Not Half Baked - Half built.
« Reply #24 on: October 05, 2007, 04:21:27 AM »
I agree, equilibrium will be reached very soon...less than 1/2 rotation.

Bill
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Ant Burr

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Re: Not Half Baked - Half built.
« Reply #25 on: October 05, 2007, 04:30:02 AM »
Another example...
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Nastrand2000

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Re: Not Half Baked - Half built.
« Reply #26 on: October 05, 2007, 04:31:54 AM »
so why not use something like this http://www.youtube.com/watch?v=ohap0KAo7kE ? And modify it with springs. You would just need to use modifiable tension on the springs.
Jason
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Pirate88179

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Re: Not Half Baked - Half built.
« Reply #27 on: October 05, 2007, 04:39:50 AM »
I have my suspicions about this video.  I have seen it before and there is something about the rotational movement that bothers me.  It does not appear linear and fluid which I would expect if all components are somewhat matched.  Of course, it stopped after a little bit, which does not bother me at all.  IF this were real, the stopage could be overcome utilizing better construction methods and materials.  I just don't think this is for real.  Anyone else's opinion?

Bill
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Ant Burr

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Re: Not Half Baked - Half built.
« Reply #28 on: October 05, 2007, 04:45:46 AM »
Excellent!!!

In it's current form it would have a problem lifting a weight.


When I have attached the elastic, I will find out how much weight my machine will lift. It has 3 @ 1 Kg weights powering it with 3 @ 30 square waves.

I have a cast Celtic skull I got at Wookey Hole in Sommerset, I'll start trying to hoist that.
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Pirate88179

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Re: Not Half Baked - Half built.
« Reply #29 on: October 05, 2007, 04:49:52 AM »
Best of luck to you.

Bill
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