Home brewed cheap Dyno

[Fredrik Skog]

Try http://proffa.cc.tut.fi/~k124775/revpro.html
for more about this.

Bye!

On Sat, 3 May 1997, Alain Marchildon wrote:

> After reviewing the home dyno software package available on the F-body list
> it got me thinking that if you want an accurate home built dyno with the
> least amount of money invested the best way to go would be similar to what
> is already done but instead of calculating the vehicle speed with the trany
> diff and tire ratios why not use the speed sensor that is buried the dash
> of most modern cars, they give something like 2000 pulses at 60mi/h and
> then get an inductive pickup to read the engine speed like the Dynojet
> chassi dyno do except instead of reading the car speed they read the drum
> speed.
> The rest is pure math.
> 
> The home dyno records the pulse from the inductive pickup on a small plain
> voice recorder and then feeds this to a sound blaster card to produce a
> WAVE file then reads this file.
> 
> A stereo recorder could be used to record the inductive pickup and the
> speed sensor one on the right channel and the other on the left to get two
> distinctive pulse patterns and produce a WAVE file then read it and
> calculate what we need to get car speed engine speed and the rest for HP
> and torque.
> 
> Very cheep way to get a reliable chassi dyno.
> Most of us have a inductive timing light, computer with sound blaster.
> Only thing missing is a stereo tape recorder (a stereo camcorder would be
> perfect)
> And a few feet of cables and a few plugs and the big one the software to
> convert the pulses in the WAVE file to readable format for you favorite
> database program.
> 
> Any one interested in writing a simple bit of software to convert this?
> 
> 
> // marchildon at usa.net                                            //
> // Alain Marchildon                                              //
> 
> 

##############################################################################
Fredrik Skog				'70 2002 ti O==00==O  \\\  Amiga 1200
Email: c95fsg at cs.umu.se					       \\\ ///
WWW: http://www.ts.umu.se/~skog/				\\X//