Dave:
I heard you the first time about the exhaust temps and tuning. O.K., I know
you've had a lot of experience in that, and you may be absolutely right. If
so-- then what's the point of using ETs?
I can tell you that in 2001 at SpeedWeek I saw an anomalous ET on "Yellow
Rose's" data-- Skip looked at the data and said something about the cylinder
running lean-- and soon found a loose spark plug. We think that probably
saved the engine. To me, that's part of "tune-up".
I have not the experience to know whether one could select "the pill" with
ETs, but for now I'll take your word that it doesn't work that way.
Thanks for the info on the amplifier chips. Makes me even more suspicious
of the field amps. Gotta find time to do some testing on this.
Bad data is MUCH WORSE than NO data!
Russ, #1226B
-----Original Message-----
From: Dave Dahlgren [mailto:ddahlgren@snet.net]
Sent: Sunday, May 11, 2003 6:28 AM
To: Russel Mack
Cc: Albaugh, Neil; 'Keith Turk'; 'Nigel Shaw'; land-speed@autox.team.net
Subject: Re: Quick Data Connectors
http://www.analog.com/Analog_Root/productPage/productHome/0,,AD595,00.html
As far as i know this link is for the chips used in the Quickdata amps and
would
suspect that they are copy of the app notes suggested application circuit.
The
first thing that has become obvious is the temp ratting of the chips.. Max
50
degree C I think that they don't belong under the hood might be the first
thing.
The other thing is if you look at the Vout table of the device it is not the
curve that Edelbrock uses although it is close. It does show the non
linearity
of the device though so might be a good source of info as to starting a
calibration. Although it does not take the thermocouple it self into
consideration.
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