912 CDI (SMD) Failures

Extending the wires to move the modules around is a great approach, which I haven't done yet, since I'm first thinking about possible interference on these longer cables.

Perhaps the Rotax technicians could tell us more about this wire extension.

I still noticed that for the Ignitech wires, there is no shielding!

If the ignition starts messing up, maybe I'll kill the engine, so I'm looking for the brave guy to try!

Putting the engine back on a bench requires a lot of work, which we did to test the Ignitech curves, but I no longer have access to a test bench, unfortunately.

It remains to be seen whether it is the heat and the vibrations that put the Rotax modules down...

Jacques

The signal amplitudes and detection thresholds are quite high and it is unlikely that there would be noise with high enough amplitude to cause a problem. Don't forget that the inductive pick-ups on the flywheel are effectively floating, so if the cables are run together then the same noise will be induced in each conductor and cancel out at the input to the circuit. The input circuit doesn't have a true differential input but it is clearly sufficient otherwise Rotax and Ignitech would have screened their cables.

Je pense la même chose MAIS ...J'aimerai bien qu'un techno de Rotax le confirme .

I think the same thing BUT ... I would like a Rotax techno to confirm it.

sorry for the post in French, it's a mistake on my part