Mayday! Mayday!!!

[raj]

In the pictures above, two identical weights are hanging/swinging on two bicycles wheels geared together on horizontal axles, so that the wheels rotate at the same speed.
When one weight goes down height H, losing PE(x) the other weight goes up the same height H, gaining the same PE(x).

Taking frictional energy loss into account, has the CoE applied here???

Raj

[raj]

Hello to ALL of you!

Just noticed one greenie added.
Complete surprise.

My knowledge is simple layman's.

Thanks a lot to the friend who pushed that button.

Raj

[raj]

This is my current build attempt.

There is not enough room between the two geared bicycle wheels for the eights swinging weights.

I am going to sort this problem out soon and I hope to complete another gravity wheel concept testing prototype well before the end of this month.

But I CANNOT promise that it will be a working prototype.

Raj

[raj]

I am still having problem with my concept testing prototype build.

The swinging weights are getting in each other's way, preventing their normal swing paths.

I am continuing to find a way to sort out this problem.

I'll keep you all posted as I go along.

Kind regards to ALL.

Raj

[Tarsier79]

Looking good Raj. If the weights get in each other's way, try installing just 1 opposed pair, so you can get an idea of torques involved, and rotate by hand through 180/360 degrees.

[raj]

As many of you have said often, conceptualisation and drawing a PM wheel is one thing, but BUILDING the wheel is quite another thing.

I am learning it the hard way.

Just a confession!

Raj

[raj]

I am hopeful to complete my gravity wheel concept testing prototype.

But I give ZERO guaranty that it would work.

Raj

[Art]

Good going Raj ,

It looks like you're really getting into it !

Are those 'ring rim wheels' Slightly offset to each other so that the heavier rubber wheels can alternatively be 'driven ' each 180 degree rotation ? (presuming of course that the belts holding the rubber wheels suspended from the hub can be lengthened )

If you were to have a weighted disk mounted on the axle between the two rubber wheels you would have a driven flywheel as the whole contraption rotated ! A flywheel being 'precessed' twice per rotation .

This may not be the lines your thinking along , but its an interesting if slightly frustrating area tryng to 'peddle' an out of balance flywheel , but you're almost there with it .

Its good fun : )

[raj]

My dear Art,

Thanks ever so much for your input.

For the very first time, in my years of trying, I have just managed to build a gravity wheel concept testing prototype, just as I had originally conceived and drawn this PM wheel concept.

Except that the axle of the rimless smaller inner wheel was meant to stay in a fix position on the hub of the larger inner wheel, rolling on inside rim of the drum wheel.

In my present build, the larger inner wheel hangs/swing on axle of drum wheel, which means that the rimless smaller inner wheel will also tend to swings as and when it would rotate.

All I need now is to install the eight weights and see.

Yes Art.
It's good fun in trying.

Raj

[primemignonite]

Raj,

I've studied this newest one of yours with some alacrity and care and, ' am of the opinion that (for whatever it may be worth) it WILL RUN of it's own self!

Just a bit more tinkering here and possibly there, surely should do it.

CHEERS!

James

[raj]

Dear James,

I am a bit loss and I am struggling with the build, having to change a bit here and there.

Funnily enough, I a drawn to it and enjoying every moment of trying.

It's almost a fulltime occupation for NOW. Luckily, timewise, I am free.

Raj

[raj]

I have been extremely busy with my gravity wheel concept for weeks now.

I have just found, after dozens of new drawings, a new but exceptionally best concept addition to my gravity wheel design.

Now my gravity wheel concept is JUST A SINGLE wheel with the eight weights following the same paths as shown in my drawings,that is being pulled up closer to the axle on the ascending side and swinging further away from the axle on the descending side of the wheel.

I am tempted to shout ' Eureka', but I dare not.

Raj

[Tarsier79]

Pay close attention to when the wheel has to lift the weights into position.

[raj]

Hello Tarsier79!

Theoritically, it looks a PERFECT torque driven gravity wheel.

After years of trying at PM wheel designs/drawings, I know what I am saying. Theoritically it looks a perfect runner.

Finally my gravity wheel concept has ended up as JUST an intricate system of strings, pulleys, levers and weights SINGLE wheel concept.

I started my 'Mayday' thread several years nows, and all throughout this long period, I have regularly asked help from forum members about torque calculations in my countless drawings I posted in here.

For the first time, I have a gravity wheel design, that I do not have to seek help in torque calculation, because pulleys, levers and weights are connected to a SINGLE wheel and axle.

Torque is JUST the positions of the moving weights around the axle.

A weight can hang, swing or rest on more than one strings, levers or pulleys connected to anywhere on the RIM of the wheel, TORQUE provided this this weight is calculated just by its position relative to the axle of the wheel.

OR CAN IT BE OTHERWISE?

Raj

[rlortie]

It is my belief that torque calculations can best be measured by using Jim_Mich's tried and true Prony brake system sitting on a bathroom scale.

It is said that a steam engine and electric motors build maximum torque at zero rpm, this make perfect sense to me and a gravity or OB wheel should be measured in the same manner.

My current build is divided into 35 sectors, thus giving me maximum static torque every 10.28 degrees of rotation. Rotational torque or Ke will be less than static due to wind and mechanical friction factors. As the machine slows by tightening the Prony Brake, torque values will increase until maximum stall is obtained.

I do not believe you wil find anyone here who would attempt to give you torqued evaluations based on your drawings, I know I certainly would not attempt it. Build a better mousetrap and the world will beat a path to your door. Asking for the functional force of a mousetrap based on hypothetical drawings, is best shied away from.

you can learn a lot about torque here on the internet, here is one of my favorite links.

http://www.calculatoredge.com/new/torque.htm#torque