|Ever wish you had free unlimited use
of a dynamometer? Well, with Street Dyno, that is just what you have. I probably would
have never thought of this on my own, but I found an interesting link to a page in Finland.
That is how I met Jari
"Eppu" Porhio, and he has been very helpful in getting this
"completed". You should check out his page and if you use Linux at all, give his
revkit a try. You may also want to look at Mike Chaney's "Home Dyno".
Below is a screen capture of the current [but ever
changing] user interface. I have "big" plans for the interface and it will
generally look the same, but far more features. Right now I consider it a
"useable" [barely] piece of shi.. umm I mean software. After the screen capture
there is more info on getting data and processing it.
Click to Enlarge
Here is the Voltage
Divider schematic that I use to record my dyno runs.
If you have a laptop with a soundcard in it, you
can record the WAVE [.WAV] file directly into your PC and eventually directly into the
program. If you do not have a laptop, then you will need some type of tape recorder, like
a mini recorder, to record your "dyno runs". I made a voltage divider using a
few resistors, caps and a potentiometer to vary the voltage down to a small mV scale
suitable for recording. Below is an example of what the recorded wave file should look
Click to Enlarge
Each pulse that you see is a cylinder
firing, and the amount of time between each is where we get acceleration. This along with
specific info about your car, like weight, gearing, tire size and others, allows us to get
in the ballpark as far as how much uumph you are putting to the ground.
StreetDyno.Zip -- Updated
If you would like to be notified when I upload an
update to the program, please drop me an email and I will add you to a distribution list I
am building. Also, if you just want to give some comments [good or bad] please do. I am in
need of some "dyno runs" & config files from cars with automatics in them
and cars with MSD ignitions. email me at firstname.lastname@example.org, Thanks Mucho!!
Included in the zip should be:
StrtDyno.exe - Win95 EXE [32bit Only]
09299802.Wav - Sample wave from my 93Notch
092998.Cfg - Sample config file for the above
ReadMe.Txt - Detailed instructions for making runs
and installing the program.
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