Weak mag ?!?

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Rich Bingham
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Weak mag ?!?

Post by Rich Bingham » Mon Jun 08, 2020 11:03 am

In the thread on the self-destructing magneto, R. V. Anderson commented that a weak mag could indicate cracked magnets. How weak is weak ? What’s the best test for magneto strength ? Do you need instruments ?

My Lizzie starts readily on battery when cold, but I haven’t had a similar response cranking on mag and haven’t worked at it, it’s just too easy on bat ! On the other hand, once warmed up, a quarter turn on mag, and she fires right off. Comments, please ?
"Get a horse !"

Les Schubert
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Re: Weak mag ?!?

Post by Les Schubert » Mon Jun 08, 2020 1:46 pm

An AC voltmeter is useful.

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Re: Weak mag ?!?

Post by RajoRacer » Mon Jun 08, 2020 3:05 pm

Analog at that - have heard digital doesn't like the output ?

Ron Patterson
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Re: Weak mag ?!?

Post by Ron Patterson » Mon Jun 08, 2020 5:43 pm

FunProjects St. Louis magneto tester is the best way to measure the output of a Model T magneto.
St Louis Magneto Tester.docx
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St. Louis Magneto Tester.jpg

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