Greg
Neat stuff. Great info.
A set of pistons, rings and a cylinder sleeve, however, are still cheaper
than the $30,000 for the super duper ignition system. The price will come
down with time, and other systems will get better too.
John Beckett, LSR #79, E/FCC
----- Original Message -----
From: "Hyatt Engineering Ltd." <Hyatt-Engineering-Ltd@fuse.net>
To: "John Beckett" <landspeedracer@email.msn.com>; <ARDUNDOUG@aol.com>;
<land-speed@autox.team.net>
Sent: Sunday, August 06, 2000 1:22 PM
Subject: Re: MSD Detonation Detector and Cockpit Display Meter
> I was just at the "Engine Expo 2000" in Hamburg and learned a little more
> about knock detection, so I need to clarify some miss-information I
> previously supplied.
> The problem with knock detection on racing engines apparently is not
> primarily due to the less than optimum selection and calibration of
> accelerometers as I previously reported. Even ideal accelerometers are
> problematic at high RPM as the normal mechanical noise in the engine
starts
> to fall into the same frequency spectrum as the knock, so the system
cannot
> differentiate between the two. If the system mistakes normal high rpm
engine
> noise for knock it will unnecessarily retard the spark and steal HP.
> Most engines tend to knock more around the peak in the torque curve than
at
> max RPM though, so the things should work OK through the "normal" RPM
range
> as long as they are suppressed at high speed.
> If the knock detection does not work at typical engine speeds (even with
> nitro or nitrous) than there is a problem with the accelerometer or
> software.
> There is an ignition system available that can sense the changes in
> ionization across the gap of the spark plug during detonation. In this way
> it can detect knock even at high rpm. The system even looks at each plug
> independently and automatically maps the optimal timing for each cylinder
.
> Unfortunately the system is $30,000 per engine. Their only customers have
> been F1, not even the CART or NASCAR crews can afford them.
> If anyone has 30 grand burning a hole in their pocket I can forward the
> source of the system to you !
> Greg
> ----- Original Message -----
> From: "John Beckett" <landspeedracer@email.msn.com>
> To: <ARDUNDOUG@aol.com>; <land-speed@autox.team.net>
> Sent: Thursday, June 01, 2000 8:21 PM
> Subject: Re: MSD Detonation Detector and Cockpit Display Meter
>
>
> > Doug
> >
> > >From what little I know about these things they work great on street
> > cars...are marginal on race cars...and I would guess about useless with
> > nitro.
> >
> > John Beckett, LSR #79
> >
> > ----- Original Message -----
> > From: <ARDUNDOUG@aol.com>
> > To: <land-speed@autox.team.net>
> > Sent: Thursday, June 01, 2000 3:55 PM
> > Subject: MSD Detonation Detector and Cockpit Display Meter
> >
> >
> > > Group,
> > > Has any body out there used the MSD detonation sensor on nitro
that
> > has a
> > > readout in the cockpit for the driver to see. Chuck Salmen has one on
> his
> > > $um-Fun gas roadster and he likes it. What I don't know is how they
> would
> > > react to nitro which is on the verge of detonating at all times.
> > > Anybody had any experience?...............................Doug
King
> >
> >
> >
>
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