Rebuilding a Vespa engine not getting fire my question is do all Vespas have a blue external ground wire? Coil supplied with engine has a single red lead to points and an uninsulated lead grounded to coil itself.
Vespa magneto coils
Re: Vespa magneto coils
normally, the ground is in a blue or green insulation, and runs through the brake light circuit.
the typical hardwire is to ground the wire to the coil internally. it should probably be insulated, tho
Re: Vespa magneto coils
So I'm thinking I got 2 lighting coils. Or can they interchange?
Re: Vespa magneto coils
There are usually 2 coils under the flywheel. One is lights the other is ignition. If you have 3 coils, then you probably have a turn signal bike. The extra coil goes to the battery for the turn signals.
Re: Vespa magneto coils
Yes, has to be with that ring terminal on it.
Re: Vespa magneto coils
Yup!
Re: Vespa magneto coils
I was wondering, the coils seem to be a sturdy part of the ignition. I even had chewed up a bit on a previous rebuild. Picked out scrap,reset , fired up. So I'm wondering, besides the connection wires needing replaced , how often do the coils just fail ?
Re: Vespa magneto coils
> Les B. Wrote:
> -------------------------------------------------------
> how often do the coils just fail ?
Failure can be caused by misuse/mishap .
On their own , not very often .
That is usually dependent on the insulation . If the insulation fails , the coil can be unwound and the wire re-insulated , rewound and the unit would work perfectly .
That was the case with the headlight coil in my 1957 Simplex . The insulation deteriorated and was no longer viable . The coil was just a lump of wire .
I 'peeled' it apart , strand for strand , applied spray paint as insulation to the length of that wire and let that dry . Then wound the wire back into it's original form , to fit over the steel core .
Now the headlight works as nice as if fresh from the factory . ;)
Re: Vespa magneto coils
Re: Vespa magneto coils
Why are your photos so beautiful Cheetah?
Re: Vespa magneto coils
Proper lighting go a long way
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