Nother ALDL grabbing method

[Marteney, Steven J.]

This is definitely a viable option and some similar stuff has been done in
the past (automobile related, not ALDL specific).  There is a group of guys
making spark sensors (coil of wire wrapped around spark plug wire + some
conditioning circuitry) and tying the spark signal into the audio input of a
camcorder.  In this way, you just get square waves input into the audio
stream.  The goal is you mark off stuff like 1/4 mile strips or record time
stamps when your car reaches 60mph.  The audio track is then imported into a
PC via sound card and decoded by software they wrote to get some horsepower
and torque curves.  (Of course, it helps to have an accurate weight for your
vehicle, gearing, etc.)

I don't know the link but it should turn up if you some web searching for
"desktop dyno", which was what I was looking for at the time (about a year
ago).  You may get some "ideas" by paying them a visit.  

Anybody out there the ones who were doing this?

Steve

-----Original Message-----
From: Dave Zug. [mailto:dzug at delanet.com]
Sent: Tuesday, February 15, 2000 2:15 PM
To: gmecm at diy-efi.org
Subject: Re: Nother ALDL grabbing method


Its that its based on not having to buy anything (long as you own a laptop)
other than a cheap cable.

Just a concept really - but I hope to try some recordings next.

thats ok, I asked so I could get feedback - thanks!
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