In car magneto recharge with welder

[JBog]

I have seen some people use a DC welder to recharge their magneto in the car. Can you also use an AC welder?

[brucesp]

No. AC would discharge the magnets almost instantly. You need a DC welder and then to follow the instructions posted many times on the forum. I used my TIG welder, set to DC, and just touched the post at 30A, then increased the setting incrementally up to 120A. By "touch", I mean you hit it for just an instant. Don't leave it connected. Magnet charging occurs with the change from off to energized and back. The process works well when it's set up right.

[speedytinc]

I dont get the need to incrementally increase the charge amps. Find the Tom Carnegie method.
The important thing is to align/center the magnet paired ends over the field coils. Center the magnet screws visually thru the inspection cover. Magnet polarity is not even important. Strike it ONCE on the highest setting. DONE. Do remove the magneto contact & use a bolt or valve to make your grounding contact on the field coil.

[AndyClary]

I second the Carnegie method. I was skeptical but it worked for me and it’s pretty simple.


Andy

[SurfCityGene]

Tom Carnegie did an extensive testing and research of magneto charging. His method of in car charging is simply the best and easiest method to get the maximum possible charge of the magnets.

[KBurket]

Tom Carnegie’s In Car Charging checklist can be found at this link.
https://www.mtfca.com/discus/messages/5 ... 1468522390

[tom_strickling]

I jusst did it this morning . Before, when running on MAG it was sputtery and jerky. NOW SMOOOOOOOOTH with MORE POWER!

[speedytinc]

Test the output with an analog voltmeter. You will be shocked. (no pun intended)

[J1MGOLDEN]

I renovated an old 40 Volt about 40 Amp Golf Cart Battery Charger that works very good with three short 5 Second zaps.

It had a 8 Hour Time Out Switch that was replaced with a heavy duty push button.

The last one I did had a compass that pointed right to the transmission case and pedals all over.

So, I removed the spark plugs, jacked up a ear wheel to reduce drag and put the brake lever in neutral.

Three short pushes of the button did a great charge, and the first one aligned the flywheel.

Putting the spark plugs back in and starting on Bat burned out my 1156 bulb used a a load for my volt meter and it was showing about 16 to 18 at a fast idle.

Now the engine will start on Mag too.

My design.

Charger Front.JPG (72.65 KiB) Viewed 1674 times

[J1MGOLDEN]

Sory, I missed a typo!

That was a rear wheel!

[J1MGOLDEN]

As for the AC Coil Ring, I had one about the size of a 20 inch bicycle tire that just plugged in to the wall socket.

In the 1960s era, some TV picture tubes had an area that would become magnetized and make it impossible to properly adjust the picture.

Waving this coil around it removed the magnetism and allowed the picture to be properly adjusted.

[JBog]

I renovated an old 40 Volt about 40 Amp Golf Cart Battery Charger that works very good with three short 5 Second zaps.

It had a 8 Hour Time Out Switch that was replaced with a heavy duty push button.

The last one I did had a compass that pointed right to the transmission case and pedals all over.

So, I removed the spark plugs, jacked up a ear wheel to reduce drag and put the brake lever in neutral.

Three short pushes of the button did a great charge, and the first one aligned the flywheel.

Putting the spark plugs back in and starting on Bat burned out my 1156 bulb used a a load for my volt meter and it was showing about 16 to 18 at a fast idle.

Now the engine will start on Mag too.

My design.

Charger Front.JPG

That's brilliant! I would love to know what you did to it.

[Scott_Conger]

I believe a 5 second zap is an extremely long time. It would serve to burn out any shorts on the mag coil but is a much longer application than the magnets really need

it is a very nicely packaged device, Jim.