Re-magnetize a flywheel

[fastjohn]

Has anyone tried to re-magnetize a rowboat motor flywheel with rare earth magnets, and how did you do it?

[The Boat House]

I’ve done them John but it doesn’t help.
There are a lot of people that will tell you
different and I would have been one of them.
I was so sure it would that I paid more for this
thing than any motor I own – by a lot.
After over 20 years of messing with this thing,
increasing the amount of magnetism has little
affect on increasing the spark at the RPM
these motors start and run. I’d be glad to
charge your flywheel if you want to ship it to
me but it would be expensive. Be worth it if it
really helped.
Tubs
.

[opposedtwin]

John,

Tom Peterson up in Neenah has one of those machines.

[jeff-register]

FastJohn,

Please post your results. I now know nothing abut recharging rare magnets but will study on the web to learn now I’m retired. Interesting consept. Metal must be magnitized before becoming a magnet. Maybr there are better tools for performing this process? I’ll get back to you. I’ve always ben interested in electrical.

[jeff-register]

FastJohn,

Look on the web under neodymium magnets That is the tech name for rare earth magnets. I can’t read the fine print anymore, thanks covid but there is a wealth of data there. I remember you from Johns old Merc site.  One site shows an inverted charger from Tubs charger, put the part inside a winding & a machine made for providing the current or power suppy.Very interisting! Just guessing but it’s making some kind of powerfull electro magnet, identifying north & south poles & align with the rare earth magnets. The energy felt when magnets attract or repel is called guass or flux field. Im sure there are many advances in the process now! Good luck Jeff

Tubs

Have you ever taken the bottom cover off your recharger & does it look like a huge coil? What size wire is used?Does it have a bridge rectifier for the windings? Seems to me it would require direct current, anyone?

Trying to learn!

[The Boat House]

There isn’t much in there Jeff . Couple coils, a trans former, a switch to change polarity
and a button to energize. Mumbles built one. I’ve heard a car battery can be used as a
power source. As far as the amount of magnetism a coil need to make a spark, I can
best describe it as being like the volume on a radio. You can turn it up to make it louder
but what is being transmitted is the same. However the speed that the magnet passes
over the coil does increase the intensity of the spark. Often people check a flywheel
magnet by dragging something over just 1 pole. To real get a indication of a magnets
strength you need to bridge both poles.
Video Link. https://youtu.be/PZ0uPBfUD7E?si=_YNzCI2rWB9BYx06
Tubs

[jeff-register]

Tubs,

Thank you for the reoly. I did learn that the power supply must be direct current from your data requiring D.C. for a power supply. It didn’t make any sense to use alternating current when it changes from positive to negative 60 times a second or 60 hertz or cycles. With D.C. power the electro magnet has a pure north & south poles. A battery is the purest form of D,C. power, but you knew that  too.

[Author]

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