Pickup coil & pulse coil?

[tigertim20]

I have a question about pickup coils.
Ive noticed that usually the pickup coil has two wires, but I have recently come across an item (manufacturer's genuine part) that only has a single wire.

Im wondering what the difference is between the two?

if you replaced your pickup coil, are the single and double wire ones interchangeable, or do they work in a totally different way?

[tigertim20]

anyone?.......

[carburator]

anyone?.......

perhaps the single wire pickup coil uses the body as a grounding?

Im guessing your talking oldschool magnetic rotor/ stator type stuff
not hall effect sensors?

[Akzle]

post pics.

generally coil: one wire in (signal) and one or two out (HT leads to cyls)

saw one on a single cyl 'cooter... trying to remember. pretty sure it was one in one out and the mounts provided the ground potential.

[tigertim20]

Ill Have to post pics tomorrow, bit dark in the shed now, but does that mean one could use a single wire coil with a CDI that was designed for a pickup coil with two wires?

would you then ignore the ground wire for the pickup coil at the cdi, or would you run the wire from the cdi that was designated for the pick up coil to earth?

[tigertim20]

perhaps the single wire pickup coil uses the body as a grounding?

Im guessing your talking oldschool magnetic rotor/ stator type stuff
not hall effect sensors?

yes

post pics.

generally coil: one wire in (signal) and one or two out (HT leads to cyls)

saw one on a single cyl 'cooter... trying to remember. pretty sure it was one in one out and the mounts provided the ground potential.

Im talking about pickup coils, the little thing that sits on the outside of the magnetto, not a coil for the spark plug

[imdying]

Grounds through the engine itself, up the earth strap, back to the battery. Under one of the retaining screws, use a small brass eyelet, and either connect that to an earthing point on the bikes chassis, or to the earth wire on your existing connector.