350B not charging - help please - MVAgusta.net
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post #1 of 3 (permalink) Old 09-25-2016, 04:39 AM Thread Starter
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Join Date: Jul 2009
Location: Perth, Western Australia.
Posts: 34
350B not charging - help please

Hello all.

I hope someone can provide some guidance on finding and or fixing a fault on the charging circuit of our 350B (1971) - it s not the electronica.

Today the bike broke down after a fairly short run. After getting the bike home we pulled off the RHS cover of the engine and ran the engine again. A multimeter across the red and green wires coming out of the dynamo/generator finds no current coming out, this explains the bike eventually running out of electricity - there is no charging going on anymore.

Any pointers on where to look for faults on the dynamo/generator?

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post #2 of 3 (permalink) Old 09-25-2016, 06:52 PM Thread Starter
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Join Date: Jul 2009
Location: Perth, Western Australia.
Posts: 34

Quick post on the "ride" for sh!ts and giggles is here.
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post #3 of 3 (permalink) Old 10-03-2016, 12:20 PM
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Join Date: Sep 2006
Location: Görlitz, Germany
Posts: 3,897
I fear You circled it in quite good.
My tip would the generator windings have an earthing fault.
This is nothing extraordinary by any means on this old stuff.
The windings can be repaired.
I and my friend gave up on it a few years ago.
He installed a 12V scooter alternator on mine and made an adapter for it.
We changed the ignition coils and wiring and so on.
Then he dropped a washer in it and the alternator was again shot.
Any when he got another scooter alternator and it worked.
However then a piston got a hole burned in and the bike is in parts since.
So much of my help.
Nice photo and a sadly short story.
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