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Re-magnetising flywheels


Well Known and Active Website User
VOC Member
Interesting, I wonder if we could magnetize a Rapide's flywheels and hack some kind of generator together.


Well Known and Active Website User
VOC Member
That magnetizer would be hard pressed to do much of anything to an Alnico magnet. Inside the pyramid is a rectifier for the mains voltage and the bulbs are there to dissipate the power in the coils after the voltage is switched off to avoid a big spark. Since all the magnetizer has to work with is the mains voltage, and since I=V/R, the amount of current, and hence the magnitude of the field, it can generate is modest. A tired Alnico magnet will be somewhat better off after using this magnetizer, but worse off than it should be.

Graham Smith

Well Known and Active Website User
VOC Member
VOC Forum Administrator
VOC Forum Moderator
Certainly better than it was, and more balanced.

He tested it using this.

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