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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You can buy them on Amazon for $10 and I highly recommend them for developing your hands and getting better at anything you do with your hands

 

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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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My only point was that since you are doing work against the torque, there could be a way to use that work to speed up the spinning disk.

Oh, and, I certainly could make the disk inside a “standard” gyroscope spin by manipulating the frame as long as it does not have frictionless bearings.

 

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 ???
.
.
.

The lossy friction configuration is exactly why:
"This makes a good exercise tool but a poor power generator"
https://forum.allaboutcircuits.com/...eld-electricity-generator.195949/post-1848843

 

Their estimates of RPM are WAY too high because some of them come with speedometers that are intentionally set inaccurately to make them seem more impressive. They will never spin over 4000 rpm, maybe 5000.

 

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.

I was hoping for a simpler solution like we can see in the powerball with two Ferrite Choke Inductor Coils against a rotating magnet. I thought I could use larger and more magnets with larger coils.

 

You are asking for maybe a hundred times the power generated by that toy.

 

I was hoping for a simpler solution like we can see in the powerball with two Ferrite Choke Inductor Coils against a rotating magnet. I thought I could use larger and more magnets with larger coils.

This is why physics matter, it's all about energy/power.

The flashing LED's takes milliwatts of power, to scale that up to near 1 watt peak power is just IMO impractical for this type of device. It not a matter of larger and more magnets with larger coils (they don't create more energy, they only make the transfer of more energy possible if the energy source can supply it for conversion) That adds weight and extra loading to spin up the limited energy storage mass and will drain the energy quickly when used.

It's like trying to pull a fully loaded freight train with a moped.

 

I guess I need to reconsider my system. Rather than using 20 Neopixel RGB LED running 100% brightness drawing up to 60ma each I could trim that down to 5 at 50%.

Rather than using friction to convert cycles of precession to rotation of the flywheel my system uses gear transmisson and clutches. My machine is strong enough to take any size user to Vo2 max in 90 seconds. I could turn a small DC motor to the gear system and I don't think it's drag would be as noticeable. It's only turning by the force of the user and would not drag down the rotor. When its being driven by the user there is enough torque going through the transmission to frequently break gears. If I attached a motor to the transmission I don't think it would not affect the way the gyroscope feels as much.

 

Sounds cool but IMO a completely impractical energy system for anything but a short demo.

 

I guess I need to reconsider my system. Rather than using 20 Neopixel RGB LED running 100% brightness drawing up to 60ma each I could trim that down to 5 at 50%.

Rather than using friction to convert cycles of precession to rotation of the flywheel my system uses gear transmisson and clutches. My machine is strong enough to take any size user to Vo2 max in 90 seconds. I could turn a small DC motor to the gear system and I don't think it's drag would be as noticeable. It's only turning by the force of the user and would not drag down the rotor. When its being driven by the user there is enough torque going through the transmission to frequently break gears. If I attached a motor to the transmission I don't think it would not affect the way the gyroscope feels as much.

Regarding the LEDs.
If it's for humans to see by, then they don't need to be on all the time , infact cooling them can be interesting.
Flash them on for say 1ms and off for 32 and they will still look just the same sort of brightness but use 1/32 of the power.

 

Guys Thanks for talking to me about my project. You have helped me better understand the challenges I face and what is possible while saving me lots of time and money experimenting with a doomed project.

I have a different goal now to supply 5v inside the flywheel same as the Powerball but I want to power 5 20ma LED that will be on just 5-10% of the time for the purpose of a POV displaying the RPM of the rotor with an ATtiny 85 which draws just 2ma. So I have much more realistic power goal of about 20-30ma at 3-5v.
I will place 8 or more magnets in a circle around the axle of the rotor and 4 coils in the rotor. Just guessing here and welcome feedback.
Should I make it half wave DC or go through the bridge rectifier and suffer the loss of 1v?
Should it use a boost converter? Then I only need to generate 2v but there will be a loss of amps.
Will need 3-5v throughout the RPM range.
Would like to use a coil I can order online instead of winding myself to get consistency.

What are your thoughts guys?

 

Guys Thanks for talking to me about my project. You have helped me better understand the challenges I face and what is possible while saving me lots of time and money experimenting with a doomed project.

I have a different goal now to supply 5v inside the flywheel same as the Powerball but I want to power 5 20ma LED that will be on just 5-10% of the time for the purpose of a POV displaying the RPM of the rotor with an ATtiny 85 which draws just 2ma. So I have much more realistic power goal of about 20-30ma at 3-5v.
I will place 8 or more magnets in a circle around the axle of the rotor and 4 coils in the rotor. Just guessing here and welcome feedback.
Should I make it half wave DC or go through the bridge rectifier and suffer the loss of 1v?
Should it use a boost converter? Then I only need to generate 2v but there will be a loss of amps.
Will need 3-5v throughout the RPM range.
Would like to use a coil I can order online instead of winding myself to get consistency.

What are your thoughts guys?

like this
https://home.howstuffworks.com/home...ion/green/how-to-build-magnetic-generator.htm

 

like this
https://home.howstuffworks.com/home...ion/green/how-to-build-magnetic-generator.htm

Approximately yes.