I'm having difficulty visualising this ,
We've had to many people on here trying to make impossible machines, so sorty for the scepatisum,
Can you may be draw a picture of yhecdirt of mechanics and schematics,
Is it a generator, a motor , a battery and a gyro ?
So generator , fir first off demo, I'd strongly suggest look on line for off the shelf units, same for the motor and battery charger,
Make some sort of first go is always a good way forward.
It will also give you an idea on the size weight of components to do what you want,
A 15 watt generator is not small or light,
Making one that can stand bring chucked at walls , dropped etc is not going to be easy,

My device is similar to this one
Dynamax Core Trainer – DFX Sport
It's a torque converter powered by precession to create dynamic resistance.
I have made several attempts. My last one generated less than 1 volt and I'm trying to figure out a good target for the next design. Hopefully using a prefab coil that I could buy online but I don't know the specs or description to shop for.

 

Applying an external-force to a Gyroscope will not induce energy into it.

If this were true, it would be possible to make the Gyroscope explode by continuous manipulation.

"" Explaining physics is a complex issue that is irrelevant. ""

I think this statement by the TS says it all ............
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I’m not asking about my wrist. The device I’m making is totally different

Then why did you say " I’m making a gyroscopic exercise toy like the Powerball " ?

 

Im just trying to stay focused on the topic. I'm searching for a coil type & spec I could shop for online to complete my generator to generate 5v at 3000 rpm. Explaining physics is a complex issue that is irrelevant. I'm not hiding anything. If you want to learn more about how gyroscopes and the exercise versions work I have provided links above.

Energy is physics.
https://ia600900.us.archive.org/8/items/elementarytreatm00crabiala/elementarytreatm00crabiala.pdf

3v at 3000 rpm says nothing about the energy that can be extracted from that source. It takes energy to power your electronics or the charge the battery. The size of the coil and design of the coil can only tap what energy is available to convert to electrical energy. So you need to have a good idea about what's the amount of energy accessible so you can design and size components correctly.

 

You may not be intentionally hiding anything, but you are not giving us anywhere near the information needed to answer your question.

3000 RPM at a radius of 1 inch is not the same as 3000 ROM at a radius of 3 feet. One can generate far more power into the very same coil.

You currently get 1V from your coil and you want 5V? Easy, put 5 times the number of turns in exactly the same physical shape.

But voltage is not what you are after. You need to generate power. 5V at 1A is 1000 times as much power as 5V at 1 mA.

And, as soon as you load the coil, the voltage will drop, and the wheel will start slowing dramatically.

Applying an external-force to a Gyroscope will not induce energy into it.

Wrong.

Think of swinging a swing. Any child can do it. The energy in that case comes from flexing the body in such a way that it is doing work against gravity in synchronization with the motion such that the force put on the swing adds to it’s swing amplitude.

The same can be done by doing work against the torque that a gyroscope exerts when trying to rotate it perpendicular to the spin axis.

 

You may not be intentionally hiding anything, but you are not giving us anywhere near the information needed to answer your question.

3000 RPM at a radius of 1 inch is not the same as 3000 ROM at a radius of 3 feet. One can generate far more power into the very same coil.

You currently get 1V from your coil and you want 5V? Easy, put 5 times the number of turns in exactly the same physical shape.

But voltage is not what you are after. You need to generate power. 5V at 1A is 1000 times as much power as 5V at 1 mA.

And, as soon as you load the coil, the voltage will drop, and the wheel will start slowing dramatically.

Wrong.

Think of swinging a swing. Any child can do it. The energy in that case comes from flexing the body in such a way that it is doing work against gravity in synchronization with the motion such that the force put on the swing adds to it’s swing amplitude.

The same can be done by doing work against the torque that a gyroscope exerts when trying to rotate it perpendicular to the spin axis.

The radius is not determined yet as Im trying to figure out the next attempt. On the last failed attempt it was about 50mm. I could decrease to 20mm or increase to 90.
I only want to generate enough power to maintain power in the battery and I expect the draw to be up to 500ma when going at max RPM. fewer lights will be on at lower rpm since the LED will function as an RPM gauge. I only want to generate enough power but not too much to avoid slowing down the rotor.
I hope to find a prefab coil or similar product that I could purchase online with consistent number of windings instead of winding coils myself around a ferrite core.

 

It's not just coils which have to be considered. The complete magnetic circuit is important for efficiency. Google "magnetic back-iron".

 

It's not just coils which have to be considered. The complete magnetic circuit is important for efficiency. Google "magnetic back-iron".

I welcome you input as to what would be the best choices.

 

I don't know what specs to look for but I think that what I'm looking for is a Ferrite Choke Inductor Coil - Radial like this one on ebay.

https://www.ebay.com/itm/3638939129...uid=mqgazrhdtl2&widget_ver=artemis&media=COPY

 

Ferrite cores are used at very high frequencies, not 50 Hz.

The arrangement of the coils and core, if any, is critical. How about a drawing of what you envision.

 

I don't know what specs to look for but I think that what I'm looking for is a Ferrite Choke Inductor Coil - Radial like this one on ebay.

https://www.ebay.com/itm/3638939129...uid=mqgazrhdtl2&widget_ver=artemis&media=COPY

How do you propose to induce a magnetic field inside that coil? Have you looked at any DIY generator projects?

 

Ferrite cores are used at very high frequencies, not 50 Hz.

The arrangement of the coils and core, if any, is critical. How about a drawing of what you envision.

The 8 magnets will be a circular arrangement with 50mm radius. The magnets I have measure 10*3 neodymium and will rotate over the coils. I expect to place 8 coils and if they generate too much power I will remove some but I don't have any resolution if they don't generate enough power.

 

I welcome you input as to what would be the best choices.

You haven't shown us your proposed coil/rotor/magnet arrangement, and we don't know what materials/tools/skills you have available, so the 'best' choice is unknown.

Edit:
Where does a gyroscope fit into the post #33 arrangement?
What shape are your magnets? In which direction are they polarised?

 

You haven't shown us your proposed coil/rotor/magnet arrangement, and we don't know what materials/tools/skills you have available, so the 'best' choice is unknown.

Edit:
Where does a gyroscope fit into the post #33 arrangement?
What shape are your magnets? In which direction are they polarised?

The magnets are 3*10mm round in an alternating polarity circular arrangement. I'm using the HP multijet 3D printer at xometry to make my models designed in solidworks.

 

if they generate too much power I will remove some

Fat chance. The coils you linked to might provide a few micro-watts if you pass those magnets over to the top of them at 15 m/sec (which is what I calculated from you RPM and radius).

That is not a good magnet / coil arrangement. What you want is coil on a form shaped like a C with the magnets spinning between through a small gap between the two ends of the C. Forgive my crude drawing, but something like this:

 

Fat chance. The coils you linked to might provide a few micro-watts if you pass those magnets over to the top of them at 15 m/sec (which is what I calculated from you RPM and radius).

That is not a good magnet / coil arrangement. What you want is coil on a form shaped like a C with the magnets spinning between through a small gap between the two ends of the C. Forgive my crude drawing, but something like this:

View attachment 302511

Thanks for the valuable feedback and drawing. I can see what your describing but that won't be possible for me. The magnets will be faced on a spinning flywheel with a level flat surface and the coils will be mounted on an opposing stationary surface. How about bigger magnets and coils? I've got room to work with.

 

The other arrangement that would work well is two opposing magnets N to S with a gap, and a flat-ish coil the the magnets pass above and below. This would work well with less extent perpendicular to the disk.

 

You may not be intentionally hiding anything, but you are not giving us anywhere near the information needed to answer your question.

3000 RPM at a radius of 1 inch is not the same as 3000 ROM at a radius of 3 feet. One can generate far more power into the very same coil.

You currently get 1V from your coil and you want 5V? Easy, put 5 times the number of turns in exactly the same physical shape.

But voltage is not what you are after. You need to generate power. 5V at 1A is 1000 times as much power as 5V at 1 mA.

And, as soon as you load the coil, the voltage will drop, and the wheel will start slowing dramatically.

Wrong.

Think of swinging a swing. Any child can do it. The energy in that case comes from flexing the body in such a way that it is doing work against gravity in synchronization with the motion such that the force put on the swing adds to it’s swing amplitude.

The same can be done by doing work against the torque that a gyroscope exerts when trying to rotate it perpendicular to the spin axis.

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Wrong.

Think of swinging a swing. Any child can do it. The energy in that case comes from flexing the body in such a way that it is doing work against gravity in synchronization with the motion such that the force put on the swing adds to it’s swing amplitude.

The same can be done by doing work against the torque that a gyroscope exerts when trying to rotate it perpendicular to the spin axis.

I wouldn't consider a Swing, a Swing does not have the same properties as a Gyroscope,
not even remotely.

I'm thinking about a Flywheel spinning inside of a surrounding frame, on Bearings,
which is an over-simplified definition of what a Gyroscope consists of.

Are You trying to imply that You can take that Flywheel and make it spin,
and continue to increase in RPM,
by manually manipulating the frame surrounding the Flywheel ?

I'd pay Money to see that, but it will never happen.
Gyroscopes just don't work that way.

Please show me the error of my ways.
Please provide several video-links of this phenomenon being demonstrated
and I will gladly concede that I am incorrect,
and that I have been misguided by my own senses.
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Very interesting !!!
I stand corrected.
Of course this special-trick "friction" configuration wasn't available when I was growing-up.
What will they think of next ???
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