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Author Topic: Sjack Abeling Gravity Wheel REAL World Replications  (Read 33431 times)

AquariuZ

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Sjack Abeling Gravity Wheel REAL World Replications
« on: May 17, 2009, 01:04:29 PM »
Please use this thread to post updates on real world replications and the discussion thereof.

The main thread is now suggested for general use only.

Thank you.

AZ

Cloxxki

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #1 on: May 17, 2009, 03:47:31 PM »
Thanks Aquariuz for creating separate threads.

@Dusty/Batgold's latest update (most will have seen this already)
http://www.youtube.com/watch?v=jzaf_mmsUak

This earlier video of a smaller Abeling/@Dusty wheel gives nice insight of the powers at play (or at war) within such a wheel.
http://www.youtube.com/watch?v=_pmdExy6xsQ
Most promising if you ask me, some perfections of the relative dimensions and shaped should do the trick, if anything ever will.

Any footage available of @Eisenficker2000's setups?

AquariuZ

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #2 on: May 17, 2009, 07:37:12 PM »
Thanks Aquariuz for creating separate threads.

@Dusty/Batgold's latest update (most will have seen this already)
http://www.youtube.com/watch?v=jzaf_mmsUak

This earlier video of a smaller Abeling/@Dusty wheel gives nice insight of the powers at play (or at war) within such a wheel.
http://www.youtube.com/watch?v=_pmdExy6xsQ
Most promising if you ask me, some perfections of the relative dimensions and shaped should do the trick, if anything ever will.

Any footage available of @Eisenficker2000's setups?

As far as I know Dusty is the only one building... Is Eisenficker2000 (Ironscrewer heheh) building too...?

Cloxxki

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #3 on: May 17, 2009, 07:44:26 PM »
As far as I know Dusty is the only one building... Is Eisenficker2000 (Ironscrewer heheh) building too...?
Too many posts, but I think (or dreamt) a desktop sized replication from him.

Dusty

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #4 on: May 19, 2009, 06:39:11 AM »
Time for the weekly update.  I finished the ramps and as you will see in the videos I need to do more work on the ramps and see if I can reduce friction.  I'm going to line the ramp surfaces with sheetmetal and also on the curved slots on the wheel.  I'm optimistic that I will figure out a way to make this gravity wheel work, also I will report the bad with the good.

http://www.youtube.com/watch?v=vdTJ9tqd4VA

http://www.youtube.com/watch?v=4dxKPF_Yq6o

Dusty

Cloxxki

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #5 on: May 19, 2009, 09:01:24 AM »
Great work again Dusty!

Let us know when you're ready for specific suggestions of big changes in geometry and dimensions. So far, you've a really neat machine there!

AB Hammer

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #6 on: May 19, 2009, 04:10:18 PM »
Hay Dusty

 After you have exhausted your attempts. get in touch with me.

AquariuZ

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #7 on: May 20, 2009, 10:53:40 PM »
Time for the weekly update.  I finished the ramps and as you will see in the videos I need to do more work on the ramps and see if I can reduce friction.  I'm going to line the ramp surfaces with sheetmetal and also on the curved slots on the wheel.  I'm optimistic that I will figure out a way to make this gravity wheel work, also I will report the bad with the good.

http://www.youtube.com/watch?v=vdTJ9tqd4VA

http://www.youtube.com/watch?v=4dxKPF_Yq6o

Dusty

Poetry in motion, you are a true craftsman...

What do you think of my idea of attaching the dumbbell shafts to the axle with springs?

I am trying to model such a setup.

Your wheel is awesome!

AquariuZ

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #8 on: May 20, 2009, 10:54:42 PM »
Hay Dusty

 After you have exhausted your attempts. get in touch with me.

Drinks? Pick you up at eight?

 ;D

LarryC

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #9 on: May 20, 2009, 11:41:52 PM »
Just wanted to pass on an observation from Dusty's latest video. The first video of the two before he changed the upper stand guide showed how a jam was occurring. In the first pic below you can see how the two surfaces that the rollers are hitting are almost parallel.

If smaller rollers were used or offset rollers then the weight rod would be at the black dot area and the two surfaces would not be parallel. This is also causing a significant difference in the intended location of the opposing weights as can be seen in the Sjack guiding stand picture or in Fig 4 of the patent. This difference could cause a loss of needed energy.

If you expand the Sjack guiding stand pic, note that at the 14.5 line (top center) you can reach close to parallel if you get to far out because of large rollers.

Regards, Larry 

Dusty

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #10 on: May 21, 2009, 01:45:28 AM »
It took me a while to see the black dot.  I'm going to concentrate on building larger track wheels.  I can see where that would help getting away from the parallel merging area in the upper left quadrant. 

There are two things I keep falling back on in my thinking of this wheel, Sjack Abeling says in that Youtube video, this wheel could have been invented two hundred years ago and when it runs it's not a question of whether it works or not, it is a question of how to harness the power.

If there is a secret to its operation I'm thinking it must be in the design of the dumbells.

Dusty

Cloxxki

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #11 on: May 21, 2009, 03:44:34 AM »
This thing can be hugely complicated when we have dumbells that are spinners by themselves. So many ways about it, like typical ones in the gym rolling on the bar, or rolling on the larger weight's outside. Either with our without bearings.

What if Abeling did a trick in the patent, like drawing a shape that won't ever work, for reasons he understands, but we don't and just follow him in. Like the orientation of the slot curves. Imagine how vastly different the dynamics would be with inverted slots, or simply straight ones point either forward, straight out, or back.

I like the idea of springs, but those to come in play would also suggest knowing when they could be compressed efficiently, and which timing of release would net a gain.
Knowing when to time spring action means you can vastly improve the dimensions of the wheel first.

eisenficker2000

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #12 on: May 21, 2009, 02:06:47 PM »
@Dusty,  You got a point there; If Abeling is not a "green dreamer" his secret should be in the weights.

Why this remark? When I replay the Video from RTV Noord, the commentator explicitly mentions, states that the wheel, is running with special weights, that have been taken out ,to keep the design secret.

So as a last resort I think the secret must be in the weights...if there is a secret.....

Cloxxki

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #13 on: May 21, 2009, 02:56:20 PM »
@Dusty, @Eisenficker2000,

OK, here's an idea that conforms to both :
A- smart harnessing of power,
AND
B- something that could have been invented 200 years ago.

Inter-connected slots.
You've may have read or skipped my posts on "getting an advantage". I feel that's somehow what Abeling is doing.
Now what if we don't give up that advantage anymore?

The machine does exactly what @Dusty's machines do, works the way we understand it, BUT the weight gets to advance one slot each rotation, between 8:00 and 10:00 or so. There are like 12+ slots (to not make one slot too big a jump), and like 3 or 4 weights going around.

The phases of the action all shift a bit, the working weights might even get better leverage on the lifted weights, and the work on the rise is obviously gotten over with quicker.

THE SHORT CUT ONLY HELPS WHEN THE WEIGHT IS ABLE TO CASH IN THE ADVANTAGE.

When a weight "beats" it's original rim slot to 0:00, and cashes in that advantage, it will be able to do useful work sooner again.

A way to harness the advantage a ramp offers in unloading the wheel : placing the weight back higher up than where it's expected to go!

This could be done in many ways.
1) Dursty-style wheel : single weights, and the slots are inter-connected and shaped to slide a weight back towards the rim in another slot that where it can from.
2) Supposing the aforeproposed tandem weights, they could be connected by a spring rod. The back weight makes up some ground, and the spring doesn't get unload (restrained by vertical ramp) until the shot put phase, where the front weight also cashes in its step forward on the rim.

Does that make any sense at all?

AquariuZ

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Re: Sjack Abeling Gravity Wheel REAL World Replications
« Reply #14 on: May 22, 2009, 12:49:50 AM »
Playing with some paper clippings now to simulate dumbbells attatched to the shaft via springs. It looks like it might work but need to try the other idea where opposite dumbbells are interconnected via springs (not via the axle).

In the latter you can get a clear ejection effect top left where the egg starts to shape to the right (10-11 o clock) and you will have a violent reaction of the top dumbell wanting to go right hard.

If I manage I will try my hand at a decent model in wm2d this weekend using the patent drawings as import (I know how to do this now, which is pretty neat).

Lot of work though but hey, look at Dusty... Respect.

AZ