[DeTomaso] Fuel Gage Linearizer

Edward A. Nauman enauman at roadrunner.com
Sat Nov 1 16:59:46 EDT 2008


Hey Mike,

 

To me, Pantera are like Harleys.  The only unique one is a stock one.  Even
if the tank is the same shape, the type and age of the sending unit as well
as the gage itself contribute to the calibration.  In reality, those stock
sending units can be as far as +/-10% tolerance.  Even the gage current Vs.
needle position has a large tolerance.  Add that to the likelihood that a
lot of cars have had their gages and/or sending units swapped out or
non-stock or aftermarket products installed, it would not work well with a
"one size fits all" lookup table.  It may sound a little anal retentive to
calibrate each one, but it is the only way to be sure it is accurate.  The
calibration is end-to end so it accounts for all the components in the
system.  If I was designing this with the intent of marketing it, I would
have written the code so that the user could calibrate it by merely filling
the tank one gallon at a time and pushing a button after each gallon.  The
code would do everything else.  Since I was only planning on building a
couple of boxes, it wasn't worth the extra programming effort.  If there is
really enough guys interested, I could make it so.

                                

Ed 

 

Edward A. Nauman\

C.E.O.

Smart Litez Inc

 

Palmdale, CA. 93551

(661) 305-7636

 

 

From: MikeLDrew at aol.com [mailto:MikeLDrew at aol.com] 
Sent: Saturday, November 01, 2008 1:20 PM
To: enauman at roadrunner.com; detomaso at realbig.com
Subject: Re: [DeTomaso] Fuel Gage Linearizer

 

Eddie,

Why would people need to send you their data?

Pantera fuel tanks are, by and large, the same.  Thus the values that work
in your tank should work universally (or pretty darn close anyway).  So I
would think you could safely offer a plug-and-play one-size-fits-all
solution.

I'm not particularly upset about the non-linear feature of the fuel gauge
anyway; it only starts to get important near the bottom, and near the bottom
it is fairly linear.

Mike


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