> -----Original Message-----
> From: Attila Muhi [SMTP:attila@TELORAY.SE]
> Sent: Friday, October 25, 2002 9:39 PM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      SV:      [EE]: CDI for 2-stroke, anyone done it?
>
> CDI = diesel injection ?, 2 - stroke, hmm..  Interesting.... sparks ...
> diesel ??!
>
CDI = Capacative Discharge Ignition, nothing to do with Diesels!

> >I'm thinking more and bigger sparks would be better.
> >
>
> Absolutely. In aircraft piston engines, with 2 separate ignition systems,
> you will see a significant rpm drop if you switch off one of them ( guess
> around 5%). (Probably the drop will be even more significant if you switch
> off both...) Alfa Romeo has some car engines with two spark plug per
> cykinder ,btw...
>
Two spark plugs per cylinder (in cars) are used to reduce the maximum flame
path, and therefore burn the compressed mixture more quickly.  The OP is
probably not is a posistion to machine the cylinder head to accept another
spark plug, but wants to use multiple sparks which allows reliable
combustion of non-optimal/exhaust gas poluted mixture.

Regards

Mike

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