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Re: [T3] Distributor misalignment (PPS)


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>That would be really interesting.
>Actually, one of the projects I was thinking of for parma
>would be to record a large number of type3 engines
>and then do an analysis of the frequency spectrum
>of each engine.  I have computer code
>which does this (they are easily available on the web)

Interesting idea, I would imagine that a very high quality mic would be 
needed to be able to record the subtle sounds though. It would also be 
imperative that the microphone was placed in exactly the same position each 
time a recording was made. Exhaust systems would play a great part as well 
in the way the engine sounded.

The hardest part would be to get a large group of engines in "perfect" shape 
to get a good baseline recording. If you had say 20 engines in identical 
shape they should sound similar, you might then be able to analyze the 
sounds and come up with a "normal" frequency spectrum.

Sounds like a big project :)

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