Tryin to convert Thundercat 31 to electric

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  • ckone9
    Junior Member
    • Sep 2008
    • 5

    #1

    Tryin to convert Thundercat 31 to electric

    Hi everyone, I am new to the forum.I currently have a Thundercat 31and a blackjack bl 26.I want to convert the thundercat 31 over to electric any suggestions on what I would need to do this. thanks in advance
  • j.m.
    Senior Member
    • Jul 2008
    • 838

    #2
    I would try one of these for a motor:
    http://www.offshoreelectrics.com/pro...?prod=neu-1521

    On 4s or 5s depending on the speeds you are looking for.

    Comment

    • Joe Friars
      Member
      • Dec 2007
      • 99

      #3
      There is a lot off good information Here. http://forums.offshoreelectrics.com/...splay.php?f=17
      Good luck and post some pictures when you are done.
      Joe

      Joe Friars

      Comment

      • ckone9
        Junior Member
        • Sep 2008
        • 5

        #4
        Thundercat rebuild in progress

        I just purchased Kb45 11xl,4 Ep 4500 NiMH,Turnigy Sentilon 100 amp Hv2-12s escwhat size prop should I run, and how do i wire the batteries.thnks in advance

        Comment

        • AntronX
          Senior Member
          • Jul 2008
          • 333

          #5
          How many cells in a pack? Got motor mound for KB45? You will have to run .187 flex cable and will need 6mm to .187 motor coupler.

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          • ckone9
            Junior Member
            • Sep 2008
            • 5

            #6
            yeah I got mount ose dr motor mount 6 cells per pack

            Comment

            • AntronX
              Senior Member
              • Jul 2008
              • 333

              #7
              4 * 6cells * 1.2V = 28.8V * 1000Kv = 28800 rpm. Looks right. Try 42mm carbon prop first and measure your amps draw with eagle flight v3. Keep strut as shallow as possible at first (set it high, closer to the surface). Get 6mm thrust bearing. This controller is rated for 100A DC peak, so maximum AC RMS load should be about 60A at room temperature of the heatsink. At 75 degrees Celsius, the FETs can only handle 70A DC max, so your AC will be only about 40 - 45A max. Then factoring in PWM switching stress, will bring max current of this controller to about 40A. I blew both of mine after about 2 seconds during first run. My average current was around 60A from the battery. But i had long battery wires, 40 inches total which is a big no-no. Before you go out to run this boat for the first time, post picture of your setup for others to see here, to make sure you are not going to blow something.

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              • AntronX
                Senior Member
                • Jul 2008
                • 333

                #8
                BTW, that controller is not waterproof, neither splashproof. If you get it wet, it may die right away, or will corrode. It's an airplane controller, not designed for boats. I took mine apart and dipped the board in MG electronics silicone conformal coating. Don't try to seal it with silicone glue/sealant. Water will get in if you flip your boat and controller is submerged.

                Comment

                • j.m.
                  Senior Member
                  • Jul 2008
                  • 838

                  #9
                  Hatch tape?

                  Comment

                  • lomdel
                    Senior Member
                    • Nov 2008
                    • 708

                    #10
                    Originally posted by ckone9
                    Hi everyone, I am new to the forum.I currently have a Thundercat 31and a blackjack bl 26.I want to convert the thundercat 31 over to electric any suggestions on what I would need to do this. thanks in advance
                    Any news on your TC31 conversion?

                    Comment

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