Recharge Magnets on Fly Wheel

[muddog2]

Anyone know where I can get magnets recharged on a fly wheel. I live in SC.
Also what is a ball park figure I should have to pay.

Where can I get a condenser for a Johnson AB-25 Seahorse. 1926 model.

Thanks, Robert

[chris-p]

Very often going to a local meet can get your flywheel charged! Being a member has its privledges.

I am not aware of anyone that charges for this, most guys that have the equipment are usually just happy to help out another club member.

[Tubs]

Watch this video and then decide if you still want to spend
the time to search out some to recharge your magnets.
I also have a magnet recharger and I have had the same
result as Bill and Lincoln.

https://youtu.be/FpNhJcA_NDY

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 6 years, 4 months ago by Tubs.
• This reply was modified 4 years, 2 months ago by Tubs.

[eviltwin]

Is there a way to test the magnets? Like maybe see how much weight they can pickup? Small weights, of course like nuts or bolts.

[eviltwin]

Ah, just watched the video. So magnet charging, for the most part, is voodoo?

[Tubs]

The test is if the magneto makes a spark.
Its the speed that the magnet passes over
the coil that intensifies the spark not how
strong the magnet is. I only had 1 motor
(1922 Evinrude) where the magnet was so
week it wouldn’t produce any spark at all.
I spent a considerable amount for the
magnetizer that I have. I was sure that
by recharging the magnets I would be able
to just spin the flywheel with my hand to
start some of my smaller motors. As time
went on it became clear that if there is
enough magnetism to produce a spark
increasing the magnetism wont make it any
stronger as demonstrated in the video.
After WW-II motors have permanent
magnets. Attempting to recharge them will
destroy them and they cant be repaired.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 6 years, 4 months ago by Tubs.
• This reply was modified 6 years, 4 months ago by Tubs.

[spike]

I have been led to believe if the magnets will attract and hold a screwdriver in the vertical position, that is all you need

[foot_doctor]

Hold on now. I recently repaired a Mercury MK20H flywheel that had the magnets charged wrong. They were both North poles. It took two pulses.. One to remove the incorrect charge, and the second pulse on the charger restored the magnets to the correct polarity and strength. The first pulse on the charger actually neutralized on of the magnets. That was the incorrect one. In oeder for the charger to work correctly, the charger’s shoes must have intimate contact with the magnets. I generally keep the on button depressed for about three seconds, but that may be overkill as some magnets are able to be charged in an instant if the charging field is strong enough. It’s possible that some of the old chargers may have failed diodes in their workings, and therefore they would supply an AC field to the magnets. That’s how Demagnetizers work. Mine came to me with a half wave rectifier, and I changed that to full wave some time ago. The magnetic field it now produces is considerably stronger and more effective.

R.T.

[Tubs]

I did some experiments reversing the polarity of magnets.
The poles always just switched. Can you post a photo of
the flywheel. I can’t picture the 2 magnets with like poles
facing each other.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

[foot_doctor]

Nope. Can’t post a picture. The engine was a customer’s, but it was just like any other Phelon flywheel that was used by Mercury in the 1950s. It had side by side Alnico magnets mounted with a small gap between them. The old wives’s tail that magnets can not be recharged or polarity reversed is hogwash. Completely discharged alnico magnets would typically be the result of flawed use of the magnet charger. R.T.

[Author]

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