swordfish 220 esc

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  • dennislawler11
    Member
    • Sep 2013
    • 65

    #1

    swordfish 220 esc

    i burned up my esc on sunday, i did not have any heat problems with it all day. last run it stoped working. i can still read the data logger.pulled a max of 219a 31000 rpms,but the temp was 135c. i am running an mlboatworks px335 tunnel on 4s with a leapard 4082 2000kv motor. can i add more water cooling to the next esc?
  • kfxguy
    Fast Electric Addict!
    • Oct 2013
    • 8746

    #2
    I usually add an extra cooling plate or make a bigger one on all my esc's. Here's an etti 150 I just did...



    Something else to consider, never use less than 50c quality batteries in a high performance boat setup. Your current capability if it is not up to snuff, things will run hot.
    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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    • dennislawler11
      Member
      • Sep 2013
      • 65

      #3
      i have a new esc coming on wed, i will have to order a cooling plate. what did you glue that on with? my batteries are 45 to 90c .

      thanks dennis

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      • kfxguy
        Fast Electric Addict!
        • Oct 2013
        • 8746

        #4
        Originally posted by dennislawler11
        i have a new esc coming on wed, i will have to order a cooling plate. what did you glue that on with? my batteries are 45 to 90c .

        thanks dennis
        Are they turnigy batts?

        I used a thin layer of jb weld to hold the plate on. Jb weld has alot of metal in it so I figure it should transfer heat well. There's heat sink or thermal epoxy if you want to get expensive with it.
        32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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        • Fluid
          Fast and Furious
          • Apr 2007
          • 8012

          #5
          ...Jb weld has alot of metal in it so I figure it should transfer heat well...
          Not really, according to the MSDS it is only 5-10% iron:

          Product Name: JB Weld
          Ingredient(s) CAS # Percent
          Fatty acids, C18-unsaturated, dimers, reaction products with Polyethylenepolyamines 68410-23-1..... 5 - 10%
          Iron 7439-89-6...... 5 - 10%
          Limestone 1317-65-3...... 10 - 30%
          Oxirane, 2,2-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)]bis, homopolymer 25085-99-8 ...... 10 - 30%
          Benzyl alcohol 100-51-6 %1 - 5
          Formaldehyde, polymer with benzenamine, hydrogenated 135108-88-2..... 1 - 5%
          Phenol, polymer with formaldehyde, glycidyl ether 28064-14-4 ..... 1 - 5%
          Titanium oxide
          13463-67-7 ..... 0.1 - 1%

          Limestone is a pretty good insulator.



          There's heat sink or thermal epoxy if you want to get expensive with it.
          Let's see, use a $17 tube of real thermal epoxy, or buy a new $115 ESC when the old one burns up again. Hmmmm.... The thinner the layer of epoxy the less insulation it provides.




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