Vespa PX PKXL Lambretta BGM Pro Electronic Ignition Stator Plate Pickup Unit

Vespa PX PKXL Lambretta BGM Pro Electronic Ignition Stator Plate Pickup Unit

The PickUp is responsible for the correct ignition timing, similar to a Hall sensor in a car. It gives the CDI the signal when to trigger the ignition signal. Inside the PickUp is a coil with very fine copper wire windings. This induces a voltage during the rotation of the magic pole wheel. As soon as the area of the so-called break-off in the pole wheel is reached (two slim overlapping metal tongues in the magnetic core of the pole wheel), a voltage peak is triggered which triggers the CDI and releases the ignition signal.

If the pick-up is defective, the ignition signal is not triggered at all or is triggered at the wrong time.
A simple test can be carried out with a resistance measurement. To do this, measure the outgoing cable of the pickup against ground for resistance. The measured values should be 100 Ohm plus/minus 5 Ohm. Even with a higher resistance the engine is usually still running, but the higher resistance can already indicate a beginning defect of the PickUp.

The BGM PickUp is very high quality and always provides the CDI with an exact ignition signal through a carbon barrier layer. This improves not only the starting behaviour, but also with very high revving engines the ignition remains stable.