Something new to talk about

[Minn-Tex Lee]

This is a visual description of an electrical representation of the acoustical signature of my Model A.
I used the exhaust area to record. Notice only the amplitude changes not the frequency.
Just thought it would be of interest
Lee

[H. L. Chauvin]

Don't know much about a Model A engine's exhaust acoustical signature.

But for something to talk about:

Maybe some future whiz kid may be able to computer analyze Model A engine problems with such a device to record Model A engine flatulence.

[Minn-Tex Lee]

After all the comments from people who say that they love the sound of the Model A, I thought maybe someone else may have scoped their car and could compare their sound pattern to mine. Has this not ever been done?

[newshirt]

It looks a lot nicer than mine. But the recording instrument you're using is probably a lot better than an old Android phone.

Plus, my truck only warmed up for 30 seconds. It could be a little rough, as evidenced by the irregular peaks and troughs.

Old stocker, Sears rebuild, no extra goodies. Can you hear the Puckita-puckita-puck?

[Minn-Tex Lee]

No I can't. That is why I would like to see what a Good one looks like.

[Pete]

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Originally Posted by Minn-Tex Lee

This is a visual description of an electrical representation of the acoustical signature of my Model A.
I used the exhaust area to record. Notice only the amplitude changes not the frequency.
Just thought it would be of interest
Lee

Interesting.
What rpm (roughly) was the recording made at?

[marc hildebrant]

What are the scales ?

Marc

[Minn-Tex Lee]

I was running at a fast idle (600 rpm?)
The scale is 20ms per division and 5 v per division