Author Topic: Is this possible? (mag missing brush)  (Read 528 times)

Online berger

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Re: Is this possible? (mag missing brush)
« Reply #15 on: 08.11. 2019 10:05 »
don't do as I did when having the same problem as you, spent a lot on mag refurb only to find out  later it was the points that were duff and not the internals of the mag

Online morris

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Re: Is this possible? (mag missing brush)
« Reply #16 on: 08.11. 2019 15:35 »
don't do as I did when having the same problem as you, spent a lot on mag refurb only to find out  later it was the points that were duff and not the internals of the mag

I suppose that a failed condenser also has an influence on the points lifetime or am I wrong here?
Always thought the condenser was there to prevent the points from arcing when opening and closing or isn't that the case on a maggy?
'58 BSA A 10 SA
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Online groily

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Re: Is this possible? (mag missing brush)
« Reply #17 on: 08.11. 2019 16:40 »
'Tis very much the case morris, and arcing will eat into the points quite fast if it starts. I guess that's why in the old days when you bought a fresh set of points for your typical family car every few thousand miles, many routine service kits came with a new condenser, whether it was needed or not. Happy Days!
Bill

Online duTch

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Re: Is this possible? (mag missing brush)
« Reply #18 on: 08.11. 2019 18:24 »

 Apart from any A10 magneto issues, or only ever had two condensers conclusively fail- one on the Hilux and one on the Gutzzi,  but don't remember ever replacing one before that..... but they both needed them big time
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
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Offline Minto

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Re: Is this possible? (mag missing brush)
« Reply #19 on: 13.11. 2019 16:47 »
Thanks all very much for your thoughts on this. When I get some time and a dry day, I have a few things to try.  I’m pretty sure that these bits of carbon have been the source of the problem, so a good proper clean out is next on the list, as well as undoing the carb adjustment, to put it back to how it was previously.
Thanks again, I’ll keep you posted.
Jase
52 A10 plunger

Offline Minto

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Re: Is this possible? (mag missing brush)
« Reply #20 on: 25.11. 2019 01:37 »
Well, I gave up waiting for a dry day and put my thermal pants on and hit the garage today.
Checked there was no more bits of carbon brush hiding in the points housing, checked the state of the contacts, reset the gap, then raised the throttle needle a notch, back to its previous setting. Now running like a swiss watch.
1/2 hour fettling, 1/2 hour riding, 2 hours cleaning all the crap off when I got back. Afternoon well spent.
Thanks to everyone for your help, you guys rock!
52 A10 plunger

Online Greybeard

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Re: Is this possible? (mag missing brush)
« Reply #21 on: 25.11. 2019 12:34 »
Thanks for giving us all 'closure'. Sometimes the poster doesn't come back to tell us how things were resolved.

Offline Swarfcut

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Re: Is this possible? (mag missing brush)
« Reply #22 on: 25.11. 2019 14:26 »
Minto, Not much amiss with the magneto if it can behave without fault on a rainy day. Good to know you are mobile once more.

Cheers.

Swarfy.