dyno stuff

[Programmer]

Yep--well aware of that. There's no tire slip on this dyno, unless you get
some truck
with 285/75R16's on it. The best thing about this unit has been it's
repeatability--but
that's about where it ends. As far as the weather goes--Sun/SnapOn/Maha
isn't interested in
proper testing. Actually looking towards Performance Trends for something as
we type...

Lyndon

----- Original Message -----
From: Len Sabatine <sabatine at epix.net>
To: <gmecm at diy-efi.org>
Sent: Wednesday, May 02, 2001 8:17 PM
Subject: Re: dyno stuff


>      Dyno Outputs need to be C factored [ corrected to Standard Temp,
> Pressure ]
>      @ time of test to avoid pie in the sky Torque and Power #s. The Dyno
SW
>      should be doing this as default. Tire slip can also generate false
> data. Got
>      to watch the variables like a hawk when Dyno Testing. Interestingly ,
> 1 vehicle
>     can be tested on 2 Dynos and come away with 2 differing results ,
> beyond the
>     error % desired.
>     Len
>
> >I've already had better answers than SnapOn has been able to supply me in
> >the past two years...thanks guys. Don't get me wrong--I think this dyno
has
> >great potential--it'll hold back a 750HP Dyno'd engine (biggest one I've
had
> >on it yet) at any speed--so I'm happy about that. I just can't print off
a
> >torque and HP graph of any type or sort.
> >
> >Lyndon.
> >----- Original Message -----
> >From: Eric Bryant <BRYANTE at ghsp.com>
> >To: <gmecm at diy-efi.org>
> >Sent: Wednesday, May 02, 2001 1:25 PM
> >Subject: RE: dyno stuff
> >
> >
> > > > Clear--perfectly. There's no data to "input" into the MAHA software.
> > > > Therefore it is
> > > > measuring raw data at the rear wheels. Just having a little
> > > > trouble how the
> > > > HP numbers
> > > > are calculated...
> > > >
> > >
> > > Well, torque multiplication is RPM division.  The equation for HP is:
> > >
> > > HP = RPM*Torque(ft-lbs)/5252
> > >
> > > So, if the torque is multiplied and the rotational speed is divided by
an
> > > equal factor, HP comes out to be the same.  That's what the dyno is
> > > calculating.
> > >
> > > Eric Bryant
> > > mailto:bryante at ghsp.com
> > > http://www.novagate.com/~bryante
> > >
> >
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> >
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