Re: Home Dyno

[Doug Dayson <djdayson@home.com>]

Oh...my apologies...I thought it was a "virtual dyno" thingie in a PC like
Pat's Engine Jr etc...

Sounds cool!

Doug

Roger Heflin wrote:
> 
> On Mon, 1 May 2000, Doug Dayson wrote:
> 
> > Haven't used that one...but I have found Pat Hale's (RSA Software) Engine Jr
> > and Engine Sr to be reasonably accurate (plus or minus 5%...NA only) if you
> > have a optimized exhaust set-up and reasonable inlet charge temps...
> >
> > Doug
> >
> 
> The home dyno things actually reads audio made from a inductive spark
> connector, and actually shows hp vs rpm for the given car that is
> being run.  The hp will be reasonably correct if you are on a level
> surface with no wind, and if you have the correct weight for the
> vehicle.   The program processes the audio to determine engine rpm and
> from that vehicle speed and from the change in speed and the mass of
> the vehicle over a given time determines hp.
> 
> Since it is measuring acceleartion it should be pretty accurate, and I
> understand it is fairly repeatable, at least as repeatable as a real
> dyno.
>                                 Roger
> 
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