Author Topic: Ignition switch, what do you reckon?  (Read 493 times)

Offline Stevex

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Ignition switch, what do you reckon?
« on: February 25, 2023, 06:54:03 AM »
Having had a previous ignition problem which seemed to disappear over night it was recommended to check out my LM2 ignition switch.
These are pics of the internals which to my eye don't look too bad, although there is wear on some of the copper.
I'm wondering whether turning the two dimpled parts around might help.
Is it possible to build up the worn copper with solder and would it be robust enough?
Bullets and receptacles are solid and look good and clean.







« Last Edit: February 25, 2023, 06:59:36 AM by Stevex »

Offline Frenchfrog

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Re: Ignition switch, what do you reckon?
« Reply #1 on: February 25, 2023, 07:05:31 AM »
I think soldering up is going to possibly cause issues at some point.One of my Guzzi's had a switch wear which caused it to cut out intermittently on sweeping corners...seriously dangerous so it got replaced pronto and that is what I'd do in your case.

Offline Chuck in Indiana

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Re: Ignition switch, what do you reckon?
« Reply #2 on: February 26, 2023, 08:18:27 AM »
Solder wouldn't work..it's considerably softer than brass. That one looks pretty worn to me.
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Offline blackcat

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Re: Ignition switch, what do you reckon?
« Reply #3 on: February 26, 2023, 08:29:20 AM »
Save yourself some grief and just buy a new one.
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Re: Ignition switch, what do you reckon?
« Reply #3 on: February 26, 2023, 08:29:20 AM »

Online John A

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Re: Ignition switch, what do you reckon?
« Reply #4 on: February 26, 2023, 09:58:19 AM »
I forgot there are different versions of the contact plate. That one has receptacles for the connector bullets. Newer ones have a pigtail with a connector. Some older riders knew Joe Eish who was a great dealer. He liked to stock parts that would stop a rider so if you were on a trip and had trouble he could get you going. When I told him that the contact plates were a wear item and could stop you dead in the water, he started stocking some of them. They are generally available new but the part numbers are usually not in the parts book. They list the next higher assembly which is the complete switch .
John
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Offline Groover

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Re: Ignition switch, what do you reckon?
« Reply #5 on: February 26, 2023, 10:10:01 AM »
Had a similar issue late last year, cleaned the contacts, cleaned the springs (most of my issue was here), flipped the plate and vaselined it up and it's working, though I want to replace it at some point. Also the bullet type. I almost did get stranded, but pushing the key down and forward got me home. Mine was a lot worst looking than the one you show. I'll post a link
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Offline Groover

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Offline Stevex

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Re: Ignition switch, what do you reckon?
« Reply #7 on: February 27, 2023, 05:00:05 AM »
I forgot there are different versions of the contact plate. That one has receptacles for the connector bullets. Newer ones have a pigtail with a connector. Some older riders knew Joe Eish who was a great dealer. He liked to stock parts that would stop a rider so if you were on a trip and had trouble he could get you going. When I told him that the contact plates were a wear item and could stop you dead in the water, he started stocking some of them. They are generally available new but the part numbers are usually not in the parts book. They list the next higher assembly which is the complete switch .

John, are you saying the contact plates are available for this particular switch because all my searching online has cone to zilch. The only switch I can find available is the one with spade connectors which also means having to use a separate key.

Online John A

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Re: Ignition switch, what do you reckon?
« Reply #8 on: February 27, 2023, 08:19:51 AM »
John, are you saying the contact plates are available for this particular switch because all my searching online has cone to zilch. The only switch I can find available is the one with spade connectors which also means having to use a separate key.





They may be available but unable to be found. It was difficult to find a part number years ago but when we did we could get them. I’ve lost my list and sadly Joe Eish has passed. It might be easier to get a new switch and have it rekeyed . I thought that in this Information Age that there wouldn’t be such a problem . I wish I would have saved microfilm…
« Last Edit: February 27, 2023, 08:25:13 AM by John A »
John
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It is easier to fool people than it is to convince them that they have been fooled-Mark Twain
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Offline Groover

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Re: Ignition switch, what do you reckon?
« Reply #9 on: February 27, 2023, 10:10:49 AM »
I'd also be interested in the parts. Thought about using small brass rivets to build-up the "humps"
1981 Moto Guzzi V1000G5
1987 Moto Guzzi LM1000SE, a
1987 Moto Guzzi LM1000SE, b
1980 Piaggio Vespa P200E
1980 Piaggio Vespa P125X
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Offline dguzzi

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Re: Ignition switch, what do you reckon?
« Reply #10 on: February 27, 2023, 04:49:14 PM »
   Depending on the use of the bike...I would say a modern watercraft ignition switch would be more durable,,,,(OMC comes to mind, cheap too)
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Online John A

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Re: Ignition switch, what do you reckon?
« Reply #11 on: February 27, 2023, 08:23:25 PM »
   Depending on the use of the bike...I would say a modern watercraft ignition switch would be more durable,,,,(OMC comes to mind, cheap too)





That’s what I’d use unless I kept it original
John
MGNOC L-471
It is easier to fool people than it is to convince them that they have been fooled-Mark Twain
99 Bassa, sidecar
02 Stone
84 V65C
15 F3S Spyder

 

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