Pickup Coil on Clutch Bell By scott (Read 1,359 times)

[scott]

I have a scooter in the shop for an engine rebuild and ran into something new 'to me' on disassembly.

I've serviced 100s of scooters over the years but don't remember ever seeing one with a additional pickup coil on the clutch bell. This appears to be OEM because the cover was machined to mount it. The wire plugs into the main harness right beside where the normal pickup wire is..

I'm planning to install a performance clutch with this build but need determine what this is controlling hopefully without tearing into it tracing wires...

Engine is a QMB1P39

[cyborg]

That's an odd one,,,never even heard of that let alone seen one

[cyborg]

Something just occurred to me,,,does the scooter have a speedometer drive cable coming off the front wheel?,,, if not it may be an electronic speed sensor,,,since its coming off of the final drive

[scott]

That is all that I could think of also but it does have a cable speedo

[cyborg]

Can't be a tach because it's not running at engine speed,,,if it's a 50cc it may be a speed limiter interrupting the cdi to keep speeds down below 30mph ,,,,that's what I'm betting on

[scott]

I finally got some time to trace this out.. It is wired directly to one of the ground terminals of the CDI

[cyborg]

It's a top speed limiter