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Fran McCabe (RIP) Gyroscope Demo

Started by NdaClouDzzz, March 30, 2021, 04:41:27 PM

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kajunbee

#15
April 12, 2021, 08:20:49 AM
https://youtu.be/hVKz9G3YXiw


A few years back I built a device like in this video. Difference was that I had it mounted to the shaft of a Bldc motor as the generator. At first I used a small tuning knob flywheel which didn't work very well. I then modified it to be able to mount a bench grinder wheel. I was unable to achieve a constant precession where gyro did not rotate downwards. And this was before ever connecting a load to the generator. If there is any resistance to the precession rate it would rotate downwards. If I forced the precession to speed up with my finger the device will move upwards. Apply enough force and it will rotate straight up like a spinning top. At this point there is no noticeable precession, meaning it will not rotate the generator.

kajunbee

#16
April 12, 2021, 01:37:16 PM
Ok, I see that the witts flywheel is spoked so I'll share my experience. The spoked flywheel that I had was more like a centrifugal fan. When I placed a small piece of cardboard along the side it would suck the cardboard towards it. Instead of securing a smooth plate to both sides I decided to try something. I placed the plates of aluminum plate on each side of spinning flywheel thinking if I just block the air from being pulled in the resistance would be less. It dropped the amp draw from 1.96 to 1.76 if I remember correctly. Not a huge difference but it did help. To me it's like blocking the suction of a vacuum cleaner and the motor speeding up. I'm not sure if it would be more beneficial than just securing the plates directly. I got sidetracked with other things and never completed it.

kajunbee

#17
April 12, 2021, 01:55:17 PM
What might be and interesting experiment is placing the plates along side a smooth rotating flywheel to see if there's a further reduction in drag. Just a thought.

kajunbee

#19
April 13, 2021, 02:29:05 PM
Another option for flywheel might be a ceramic skilsaw or mini grinder blade. There very thin and fairly well balanced. They are also rated for fairly high rpm. Figuring  a way to mount them might take a little thought but certainly doable. Maybe and option down the road.
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