Topic: magnet charging? – Antique Outboard Motor Club,Inc

This topic has 13 replies, 7 voices, and was last updated 9 years, 8 months ago by jim-moffatt.

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August 17, 2015 at 2:51 am #2289
tom-c
Participant
Are both the top and bottom in this photo magnets? Or is the top one a counterweight? I have had someone try to charge the magnets with no luck. Won’t even hold a small screwdriver. Can someone explain? I have a 1925 Evinrude RBM with a good magneto. I tried to increase the power of the magnets and now I have no magnets at all.
August 17, 2015 at 3:14 am #22178
mr-asa
Participant
One side should be a counterweight. If you had two magnets then you’d be firing whenever each magnet passed the coil.
August 17, 2015 at 4:09 am #22181
Mumbles
Participant
quote Tom C:

I tried to increase the power of the magnets and now I have no magnets at all.

If the strength of the magnets has lessened or disappeared, the polarity of the charger used was probably reversed. An ordinary compass is used to find the polarity of the flywheel magnet to determine the setting on the charger.
August 17, 2015 at 12:36 pm #22188
joecb
Participant
US Member
If a magnet, the metal will be very hard steel, if a counterweight the metal ( I would expect ) to be soft steel. Check them using a file.

Joe B
August 17, 2015 at 12:41 pm #22190
RICHARD A. WHITE
Participant
Lifetime Member
Look closely, sometimes the "North" pole is marked with an "N"

http://www.richardsoutboardtools.com
classicomctools@gmail.com
August 17, 2015 at 1:20 pm #22191
jim-moffatt
Participant
US Member
One side is the North pole the other the South. Neither is a counterweight. The actual magnet is the iron band going around the inside of the flywheel rim
August 17, 2015 at 2:26 pm #22192
tom-c
Participant
No, Jim. This is a RBM flywheel. And single cylinder. I think the magnet is the bottom one. A compass tells me that the right side in the picture is North, the left side South. Zapped several times with a magnet charger and still nothing.
August 17, 2015 at 3:49 pm #22195
Tubs
Participant
A "Boathouse Repair" is one that done without having tools or the skills to do it properly.
- This reply was modified 6 years, 6 months ago by Tubs.
- This reply was modified 4 years, 2 months ago by Tubs.
August 17, 2015 at 9:44 pm #22209
Tubs
Participant
Don’t know where my pictures went
but there was a mistake anyway.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.
August 17, 2015 at 11:58 pm #22216
jim-moffatt
Participant
US Member
Tom – you are wrong. One shoe is the north pole and one the south as Tubs said. I have the patent for this magneto and it was designed to work on both row boat motors and the twin inboard. It will fire twice in one revolution if a second set of points and condenser is added. I wil call you to discuss.

The best place to put the magnet charger fittings is one right in the middle of the top shoe and one in the middle of the bottom one
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