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Andy:
Congratulations! Any time another Tiger is added to thelist of the
living it is amajor accomplishment.
On the subject of gauge calibration, etc, I would suggest you read
StuBrennan's article on Tigers United.
http://tigersunited.com/techtips/BrennanGauge/rt-BrennanGauge1.aspif you
haven't already.
Based on the article, it is clear that when the temperature gauge is
reading too high, as in your case,
it can be corrected in a fairly straightforward way without the expense
of getting it recalibrated.
>From Stu's article, it can be seen that a high reading is caused by a
low resistance of the gauge. What
I did to correct the situation was to first obtain a variable resistor
(a pot, or potentiometer) and place
it in series with the gauge. You will see, then, as you increase the
resistance of the pot, the gauge reading
will fall. By taking the actual temperature with your ir thermometer,
you can adjust the pot so that the
reading of the gauge agrees with your thermometer. You can then use a
multimeter to read the actual
resistance of thepot and replace the pot with a fixed resistor of about
the matching value. I did this
several years ago and it has proven to be a permanent fix since I have
occasionally checked the calibration
with my ir thermometer.
As far as the problem with the tach, my suggestion is that you sendthe
tach to Tom Hall and have him
do the solid state conversion. It's the best solution IMHO and it's
essentially permanent.
Cheers,
Tod Brown
B382002384LRXFE
TAC 864
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<font face="Arial">Andy:<br>
<br>
<font face="Arial">Congra<font face="Arial">tulations! Any tim<font
face="Arial">e another Tiger is added to the<font
face="Arial"> list of the living it is a<font face="Arial">
major accomplishment.<br>
<br>
<font face="Arial">On the subject of g<font face="Arial">auge
calibration, etc, I would suggest you read Stu<font
face="Arial"> Bren<font face="Arial">nan's article
on Tigers United.<br>
<a
href="http://tigersunited.com/techtips/BrennanGauge/rt-BrennanGauge1.asp";><a
class="moz-txt-link-freetext"
href="http://tigersunited.com/techtips/BrennanGauge/rt-BrennanGauge1.asp";>http://tigersunited.com/techtips/BrennanGauge/rt-BrennanGauge1.asp</a></a><font
face="Arial"> if you haven't already.<br>
<br>
<font face="Arial">Based on the article, it is
clear that when t<font face="Arial">he <font
face="Arial">temp<font face="Arial">eratu<font
face="Arial">re gauge is reading too
high, as in your ca<font
face="Arial">se,<br>
<font face="Arial">it can be
corrected in a fairly
straightforward way without <font
face="Arial">t<font
face="Arial">he expense of <font
face="Arial">getting it
recalibr<font
face="Arial">ated<font
face="Arial">.<br>
<font face="Arial">From
Stu's article, it
can be seen that a
high reading is
caused by a low res<font
face="Arial">istance
of the gauge. What<br>
<font face="Arial">I
did to correct
the situation
was to first ob<font
face="Arial">tain
a variable
resistor (<font
face="Arial">a
pot, or
potenti<font
face="Arial">ometer)
and place<br>
<font
face="Arial">it
in series with
the gauge. You
will see,
then, as you
increase the
resistanc</font>e
of the pot,
the gauge
reading<br>
<font
face="Arial">will
fall. By
taking the ac<font
face="Arial">tual
temperature
with <font
face="Arial">your
ir thermome<font
face="Arial">ter,
you can adjust
the <font
face="Arial">pot
so that the<br>
<font
face="Arial">reading
of the gauge
agrees with
your thermome<font
face="Arial">ter.
You can the<font
face="Arial">n
<font
face="Arial">use
a multimeter
to read the
actual <br>
<font
face="Arial">resi<font
face="Arial">stance
of the<font
face="Arial">
pot and
replace the
pot with a
fixed resistor
of about the
matching
value. I did
this <br>
<font
face="Arial">several
years ago and
it has proven
to be a
permanent fix
si<font
face="Arial">nce
I have
occasionally
checked the
calibration<br>
<font
face="Arial">with
my ir
thermometer.<br>
<br>
<font
face="Arial">As
far as the
prob<font
face="Arial">lem
with the tach,
my suggest<font
face="Arial">ion
is that you
send<font
face="Arial">
the tach to
Tom Hall and
have him<br>
<font
face="Arial">do
the solid
state convers<font
face="Arial">ion.
It's the best
solution IMHO
and it<font
face="Arial">'s
essentially
permanent.<br>
<br>
<font
face="Arial">Cheers,<br>
<br>
<font
face="Arial">Tod
Brown<br>
<font
face="Arial">B382002384LRXFE<br>
<font
face="Arial">TAC
86<font
face="Arial">4</font></font><br>
</font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font>
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