Magneto

[cingalls]

Is there any place in the Los Angeles area to have the magnets on a magneto flywheel re-charged?

[frankr]

Are you sure they need to be recharged? How old is it?

[The Boat House]

What motor are you working on.
If your motor was built after WW-II it will
have permanent magnets. Trying to recharge
them will only damage them and there is no
repair. If you magnets are strong enough
to make a spark increasing the magnetism
wonk make a better spark. That is why you
can take a coil out of one of these and it
will make a really good spark in one of these
with its tinny little magnets.

https://www.youtube.com/watch?v=72KgjVyTPAg
https://www.youtube.com/watch?v=71W9cPMV09A

[cingalls]

It is makeing spark. This is a 1930’s PR racing engine. Runs on Methanol. 30 cubic inch. I was told if the magnets are fully charged it will help it start easier. Although, it does start quite easily so I may be wasting my time and maybe creating more trouble than what I think I’m gaining. Thanks for your input.

[The Boat House]

increasing the magnetism doesn’t increase the strength of the spark.
How fast the magnets pass over the coil does. The faster a magneto
spins the stronger the voltage. Its why they still use magnetos in these
things.

[cingalls]

Thanks for your input, I think I’ll leave it alone. I’m heading to the Nationals in DePue Il and was looking for for any advantage.

[The Boat House]

I think most everyone here would like to see that thing run.
How about some pictures and maybe some video when you get back?

[fisherman6]

Yes! Very much! Video of it running would be great! Pics better than nothing.
-Ben

OldJohnnyRude on YouTube

[garry-in-michigan]

The PR was built with soft iron magnets in the flywheel. A "keeper" should be placed across the magnetic poles whenever the flywheel is off the motor. Other wise the magnet may weaken if the flywheel is dropped. . . 😉

[Author]

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