[DeTomaso] Coolant Article

Fri Nov 2 18:15:30 EDT 2018

 As an addendum to the coolant voltage idea, this can also be used to help debug nagging problems in a Pantera or Mangusta electrical system. For instance: with the VOM hooked up as directed, turn on the headlights or some other circuit: the VOM reading may change. So by switching something on and wiggling grounds or pulling a fuse and watching the VOM reading, you can zero in on loose ground wires, poor connectors and other 'features' of our lucas-derived electrical system. I AM a Chem-E but NOT an electrical wizard so I need all the help I can find in that area! 

BTW, there is a Reactivity Chart on the Web that rates all metals in terms of their inherent activity in relation to all other metals. Start with something near the top and everything below it will react with the ones above it on the chart, in the presence of moisture. This tells one what might make a good sacrificial anode in your radiator. So yes- copper reacts with other metals. But confusingly, some metals form coatings or barriers that then resist further activity, so such barriers tend to slow down reactions.  Water softeners replace Calcium in water (which forms insoluble products that coat things) with Sodium, which forms soluble products that do not turn into coatings. 
JD

-----Original Message-----
From: Thomas Törnblom <thomas at hax.se>
To: detomaso <detomaso at server.detomasolist.com>
Sent: Fri, 2 Nov 2018 2:03
Subject: Re: [DeTomaso] Coolant Article

  About measuring the voltage of the coolant in the radiator, this
  article describes my theory very nicely, where they have two different
  multimeters showing different voltage.
  I believe the issue is not that there is a voltage in the coolant, the
  issue is that the setup works as a battery/galvanic cell/voltaic cell,
  where the aluminum radiator is one of the electrodes (cathode), the
  coolant is the electrolyte and the multimeter test lead is the other
  electrode (anode), and depending on the alloy of the test lead you will
  read a different voltage. The difference between the two multimeters
  depend on different metals being used for the meters test leads. Had
  they swapped the test leads between the two meters I believe the
  voltage readings would also have been swapped.
  If they had used a strip of aluminum as electrode instead of the test
  lead the voltage would likely have been zero as the two electrodes are
  then made of similar metal and thus will not have an electrical
  potential between them.
  Reducing the conductivity of the coolant will reduce the galvanic
  corrosion, so de-ionized or distilled water will help that. I have no
  comments on wether that has other implications for aluminum, I am no
  chemist :)
  /Thomas

  Den 2018-11-02 kl. 02:39, skrev Ken Green via DeTomaso:

  Comments?
  [1]An Inside Look at the Radical Changes in Antifreeze Chemistry

        An Inside Look at the Radical Changes in Antifreeze Chemistry

  Antifreeze does more than keep your engine from freezing. Jeff Smith
  helps us find out how it can even cause pro...

References

  Visible links
  1. [1]https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-tech
/antifreeze-chemistry/

  Hidden links:
  3. [2]https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-tech
/antifreeze-chemistry/

!DSPAM:5bdbaaea2449152292657!

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Real life:  Thomas Toernblom            Email:    [5]thomas at hax.se
Snail mail:  Banvallsvaegen 14            Phone:    +46 18 32 31 18
            S - 754 40 Uppsala, Sweden  Mobile:  +46 76 209 8320

References

  1. https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-tech/antifreeze-chemistry/
  2. https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-tech/antifreeze-chemistry/
  3. mailto:DeTomaso at server.detomasolist.com
  4. http://server.detomasolist.com/mailman/listinfo/detomaso
  5. mailto:thomas at hax.se
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-------------- next part --------------
   As an addendum to the coolant voltage idea, this can also be used to
   help debug nagging problems in a Pantera or Mangusta electrical system.
   For instance: with the VOM hooked up as directed, turn on the
   headlights or some other circuit: the VOM reading may change. So by
   switching something on and wiggling grounds or pulling a fuse and
   watching the VOM reading, you can zero in on loose ground wires, poor
   connectors and other 'features' of our lucas-derived electrical system.
   I AM a Chem-E but NOT an electrical wizard so I need all the help I can
   find in that area!
   BTW, there is a Reactivity Chart on the Web that rates all metals in
   terms of their inherent activity in relation to all other metals. Start
   with something near the top and everything below it will react with the
   ones above it on the chart, in the presence of moisture. This tells one
   what might make a good sacrificial anode in your radiator. So yes-
   copper reacts with other metals. But confusingly, some metals form
   coatings or barriers that then resist further activity, so such
   barriers tend to slow down reactions.  Water softeners replace Calcium
   in water (which forms insoluble products that coat things) with Sodium,
   which forms soluble products that do not turn into coatings.
   JD

   -----Original Message-----
   From: Thomas TAP:rnblom <thomas at hax.se>
   To: detomaso <detomaso at server.detomasolist.com>
   Sent: Fri, 2 Nov 2018 2:03
   Subject: Re: [DeTomaso] Coolant Article
     About measuring the voltage of the coolant in the radiator, this
     article describes my theory very nicely, where they have two
   different
     multimeters showing different voltage.
     I believe the issue is not that there is a voltage in the coolant,
   the
     issue is that the setup works as a battery/galvanic cell/voltaic
   cell,
     where the aluminum radiator is one of the electrodes (cathode), the
     coolant is the electrolyte and the multimeter test lead is the other
     electrode (anode), and depending on the alloy of the test lead you
   will
     read a different voltage. The difference between the two multimeters
     depend on different metals being used for the meters test leads. Had
     they swapped the test leads between the two meters I believe the
     voltage readings would also have been swapped.
     If they had used a strip of aluminum as electrode instead of the test
     lead the voltage would likely have been zero as the two electrodes
   are
     then made of similar metal and thus will not have an electrical
     potential between them.
     Reducing the conductivity of the coolant will reduce the galvanic
     corrosion, so de-ionized or distilled water will help that. I have no
     comments on wether that has other implications for aluminum, I am no
     chemist :)
     /Thomas
     Den 2018-11-02 kl. 02:39, skrev Ken Green via DeTomaso:
     Comments?
     [1]An Inside Look at the Radical Changes in Antifreeze Chemistry
           An Inside Look at the Radical Changes in Antifreeze Chemistry
     Antifreeze does more than keep your engine from freezing. Jeff Smith
     helps us find out how it can even cause pro...
   References
     Visible links
     1.
   [1][1]https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignitio
   n-tech
   /antifreeze-chemistry/
     Hidden links:
     3.
   [2][2]https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignitio
   n-tech
   /antifreeze-chemistry/
   !DSPAM:5bdbaaea2449152292657!
   _______________________________________________
   Detomaso Email List is not managed by POCA
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   nks above.
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   osted here to all past, current, or future members of the list. They
   also grant
   the list owner permission to maintain an archive or approve the
   archiving of lis
   t messages.
   !DSPAM:5bdbaaea2449152292657!
   --
   Real life:  Thomas Toernblom            Email:    [5][5]thomas at hax.se
   Snail mail:  Banvallsvaegen 14            Phone:    +46 18 32 31 18
               S - 754 40 Uppsala, Sweden  Mobile:  +46 76 209 8320
   References
     1.
   [6]https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-t
   ech/antifreeze-chemistry/
     2.
   [7]https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-t
   ech/antifreeze-chemistry/
     3. mailto:[8]DeTomaso at server.detomasolist.com
     4. [9]http://server.detomasolist.com/mailman/listinfo/detomaso
     5. mailto:[10]thomas at hax.se
   _______________________________________________
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   use the links above.
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   message posted here to all past, current, or future members of the
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References

   1. https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-tech
   2. https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-tech
   3. mailto:DeTomaso at server.detomasolist.com
   4. http://server.detomasolist.com/mailman/listinfo/detomaso
   5. mailto:thomas at hax.se
   6. https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-tech/antifreeze-chemistry/
   7. https://www.streetmusclemag.com/tech-stories/fuel-cooling-ignition-tech/antifreeze-chemistry/
   8. mailto:DeTomaso at server.detomasolist.com
   9. http://server.detomasolist.com/mailman/listinfo/detomaso
  10. mailto:thomas at hax.se
  11. mailto:DeTomaso at server.detomasolist.com
  12. http://server.detomasolist.com/mailman/listinfo/detomaso