A Cracker of a WHEEL???

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raj
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re: A Cracker of a WHEEL???

Post by raj »

The second phase of my Auto Gravity Wheel Concept testing, after the computer simulation completed, is to attempt to build a working prototype.
The concept is fairly simple to visualise, but building a working prototype would need some expertise and craftmanship, and would take a long time to see it working, if ever.

Raj
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re: A Cracker of a WHEEL???

Post by WaltzCee »

The Departments of Justice and Education are once again exceeding their lawful authority by sending a letter to every public school district in America threatening loss of federal aid if local districts do not adopt genderless bathroom policies, which would allow students who identify as transgender to use facilities such as restrooms, showers, and locker rooms of the opposite biological sex.
Well, back in the day, there's no doubt in my ever loving mind I'd have been bending gender. Yep. It's a given. Here's to you, Bethany. :p

But back to the present moment and the point.
is to attempt to build a working prototype.
running with the gerbils.

Meanwhile, back @ the ranch, grandma is beating off the Red Skins, but they keep on a comin'!
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raj
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re: A Cracker of a WHEEL???

Post by raj »

JUST PISS OFF...
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re: A Cracker of a WHEEL???

Post by raj »

If you don't like what I say on MY THREAD.
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re: A Cracker of a WHEEL???

Post by ovyyus »

Good luck with your build, raj. Please keep us updated.
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re: A Cracker of a WHEEL???

Post by WaltzCee »

If you don't like what I say on MY THREAD.
You've totally lost me there. You'd have to directly quote me before I could begin to follow that point.

If I had to guess, you're pissed off because you couldn't answer a direct question, that is, "what makes your cracker of a gerbil wheel any different than all the ones that came before it."

Hey, I'm not my client. I can't force you to answer that.
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re: A Cracker of a WHEEL???

Post by raj »

ONE who claims to be Advocate of GOD all Mighty, must be blessed with GODLY power and intelligence, must see all, must know all and must understand all.

I am just a lowly human. I don't know how to explain anything.
So I GIVE UP.
Please pardon me for my sin.
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re: A Cracker of a WHEEL???

Post by raj »

To all forum members.

I have NOT claimed that my Auto Gravity Wheel is a runner.

I am HOPING that others will say it is a runner, ONLY after and IF I am able to produce a WORKING prototype for public display.

Presently, I am feeling confident that it COULD be a runner.

Raj
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re: A Cracker of a WHEEL???

Post by WaltzCee »

. . .

well, best of luck.
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re: A Cracker of a WHEEL???

Post by raj »

My dear Ovyyus,
Thank you for your encouragement.
I shall update all my attempts, as I have always done since I joined this forum.

Raj
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re: A Cracker of a WHEEL???

Post by Tarsier79 »

Why do you think it will be a runner? What will keep the balls climbing at least as high they did the last time?

In your new simulations, the rollers appear to be on the "bad" side of the wheel... Not that is the bad side at all.
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re: A Cracker of a WHEEL???

Post by raj »

Hello Tarsier79,
Rightly or wrongly, I think it's going to be a runner, based of on the visual study of the cylindrical weights' motion.

You are right, the rolling weights do not climb as high on the descending side of the channels. NOR do they roll back and forth as in my first simulation video.

In this new video, the weights roll ONLY towards the descending side, because the shoe brake systen stop them rolling backward towards the ascending side. Instead of rolling backward towards the ascending side, now the weights stay stuck to the channel floor at the highest point they reach while rolling downwards towards the descending side, and move with the channels down to the 12 o'clock position, and then begin to roll again on the channel floor, as the shoe brake system is released , at the resetting cycle, every 45 degrees rotation of wheel.

The above can be discerned at close study of the two videos above. The cylindrical weights' motion is further away from the vertical line through the centre of the wheel, on the descending side than from the ascending side of the wheel.

I do not have a scientific proof as to why I am confident that it COULD be a runner.

Raj
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Post by ME »

Although I think it doesn't work (but what's the fun in that), it would be interesting to hypothesize why it could.
Perhaps we can get something out of it even when it doesn't work, or optimize when it does.

I just start with some observations:

As a weight is on the ascending side it rolls down (no slipping), and should get as much height as possible when it reaches the position around the axle; it can get almost as high as it was on the ascending side.
Before it starts to roll back it initiates its descending path; it should get as much leverage (width) as possible. During its descend it pushes against the slope and so rotates the wheel.

The fastest slope-shape for a stationary situation is a Brachistochrone curve. I think this should be adapted for a rotating situation - at first glance your current shape seems to look close.
Perhaps it should be a Tautochone is then its final position doesn't depend on how high it starts. -who has an idea?-

A harmonic back-and-forth motion can be observed when viewing the balls, this motion should go as smooth as possible at least on the ascending side for not loosing to much energy in slippage: Perhaps following a Paisley- or droplet-shape?

I guess the most problematic thing is that accelerating an object (in general) causes it to spend more than half its time on the first half of its path than the second half. It's probably a good thing it slows down when gong from the ascending side towards the axle before it accelerates again at the descending side.

Anyway, looking forward to see a real-life model.
Marchello E.
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re: A Cracker of a WHEEL???

Post by raj »

Thank you very much, Marchello.

Here is some views from David, who did the computer simulation.
See below.
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re: A Cracker of a WHEEL???

Post by agor95 »

Raj's has an inspirational design.

It would help to model, then improve the design.

There are more options if you think positively.

The idea of using the swing back and forward to gain CF on the right side.

This will increase due to the change of gradient.

If the harmonic is hit then that will give momentum for the next transition.

The drop curve on the left, has put forward by @ME, is good as it reduces
the weight on the left side.

I am just looking at a 4 ratchet pendulum on a flywheel.
With a possible CF secondary arm.

Hoping that will help in the modelling.
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