<all> home dyno kit??

[xxalexx at ix.netcom.com]

> On Sat, 30 Jan 1999, Mike Pitts wrote:
> 
> > >Electromotive and many other systems uses a wheel with many thoths,
> > >it could give nice resolution for computing accleration, ...
> > 
> > Also, if it has enough teeth, you can detect weak cylinders 
> > by comparing the waveform in the range of each cylinder. 
> > (ie: the teeth will slow ever so slightly for when a weak cylinder 
> > if firing)
> > 
> 
> It is teeth every 6 degrees.  So there are quite a few teeth.  I
> thought GM was using a wheel with 4 teeth (every 90 degrees) to catch
> misfires, so every 6 degrees would seem to give really accurate info.
> 
> I have one of those trigger wheels.  Any ideal where I can get a crank
> sensor and what I would have to do to it to make this work?   Run it
> into an op-amp and amp the signal and then do something with it?  At
> 6000 rpm thought, those signals will be running at 3khz so an audio
> recorder may be a problem, and a more exoitic signal recorder or
> circuit may be required.
> 
A DSP digital signal processing chip
alex