Ignition -POLINI IDM- Vespa PX, Cosa -

Polini offers with its IDM ignition an interesting alternative to the original ignition system.
The basic idea is also here a clear improvement of the acceleration by clearly less flywheel mass. The pole wheel of the Polini IDM ignition weighs only 1.4Kg, so it is over 50% less than a standard PX flywheel.

The resulting throttle response is fantastic and the acceleration in the lower gears much more aggressive. This is achieved by a lightweight construction in which rotor and fan are separate components.

• Rotor weight: 1400 grams

• Fits also PX models from year of manufacture. 2011

• Dynamic ignition timing adjustment by 8°

• p>Complete replacement ignition

• Better acceleration

• More power

• More torque

• Better throttle response

• 90Watt light output

• Amplified fan ring

• For original wiring harness/controllers from year of manufacture 1984

The ignition itself is based on a base plate of a 50cc automatic microcontroller and has a frequency-dependent ignition timing control. This is designed dynamically and adjusts via the speed band in a fixed pre-programmed ignition curve.

The engine adjusts the ignition timing dynamically (i.e. with a change in speed) by 8° crank angle. In the example (of the installation instructions stored in the download area) you can see that the ZZP is adjusted from 23° from 1300 rpm to 15° at 8000 rpm.
If the ZZP is set to 26° statically, you end up at 18° at 8000 rpm.

The dynamic adjustment helps the engine to a good torque and a clean combustion even in the lower speed range, in which a possibly existing resonance exhaust does not yet have a good supporting effect. In order to relieve the engine of thermal stress, the ignition timing in the upper speed range is reduced again, as it usually has a good filling here.

Even strong systems such as SIP Road or BGM BigBox benefit from such an ignition in the lower speed range. Here, in contrast to a real resonance system, the pre-ignition can usually be significantly increased again and the available torque increased well.

The ignition is a perfect replacement for the existing one and allows a much more agile engine performance. On models from 2011 it is a prerequisite for further tuning as it eliminates the speed limit of the original ignition.

The ignition is connected to the original wiring harness and operated with the original regulator. Models with ignition lock on the handlebar cover require a new regulator (BGM6690 is ideally suited).

NOTE: Requires an M22x1.5mm wheel puller (see accessories).