burned esc

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  • rcmanos
    Junior Member
    • Nov 2011
    • 10

    #1

    burned esc

    I’ m trying to upgrade an OUTLAW OBL.
    To do so I used an 5682 1670 kv leopard motor, a 240A swordfish esc and 5s lipo batteries.
    Some pictures of the boat.
    Attached Files
  • rcmanos
    Junior Member
    • Nov 2011
    • 10

    #2
    For the first run i used an x455 octura prop and a 40c 5s 5000mAh lipo.
    All the equipment was ok except the lipo. It was too small and unable to deliver the necessary power.
    Later I got two 5s 65c 5000mAh lipos and used them connected in parallel.

    Unfortunately I wasn't careful enough. The batteries were then able to deliver the requested power and as a result the esc burned.

    I contact hifei and they send me a new esc.
    Attached Files

    Comment

    • rcmanos
      Junior Member
      • Nov 2011
      • 10

      #3
      I repaired the boat and use the new esc that hifei send me. I also add 4 capacitors, that hifei sagest.
      used an x445 octura prop to avoid any problems.
      The prop was too small for the boat, but the esc burned for the second time.
      Attached Files

      Comment

      • rcmanos
        Junior Member
        • Nov 2011
        • 10

        #4
        The first time the prop may be too big and us a result the esc burned.
        The second time what happened?
        What am I doing wrong?
        Any suggestions?

        Comment

        • Diesel6401
          Memento Vivere
          • Oct 2009
          • 4204

          #5
          - what was the runtime?
          - throttle management (Mostly all wot, mostly less than wot)?
          - boat running wet?
          - any binding in the drive?
          - good gap between the drive dog and the strut?
          - any water (even a few drops) in the hull?
          - is the esc throttle calibrated properly and timing correct for you motor wind?

          * I've never owned the 240, but have had several 120s and 200s. They are rather reliable imho.

          Sent from my T-Mobile G2 using Tapatalk 2
          - Diesel's Youtube
          - Diesel's Fleet
          "It is easier to be wise for others than for ourselves"

          Comment

          • oscarel
            Fast Electric Addict!
            • Dec 2009
            • 2128

            #6
            Are you sure the ty-wraps aren't blocking water flow?

            Sent from my SAMSUNG-SGH-I997 using Tapatalk 2

            Comment

            • rcmanos
              Junior Member
              • Nov 2011
              • 10

              #7
              Originally posted by Diesel6401
              - what was the runtime?
              - throttle management (Mostly all wot, mostly less than wot)?
              - boat running wet?
              - any binding in the drive?
              - good gap between the drive dog and the strut?
              - any water (even a few drops) in the hull?
              - is the esc throttle calibrated properly and timing correct for you motor wind?

              * I've never owned the 240, but have had several 120s and 200s. They are rather reliable imho.

              Sent from my T-Mobile G2 using Tapatalk 2

              The runtime was about 30sec.
              The boat wasn't running wet.
              The gap was about 1mm. The total flex length is about 16 cm long and runs smoothly.
              No water in the hull.
              The timing is 8khz and the motor 4poles. Is that right?

              I don't think that i calibrate the throttle at all.......

              Do you think that this may be the reason?

              What do you mean "throttle management (Mostly all wot, mostly less than wot)?" (sorry for my bad english!)
              I also trust swordfish's escs.

              Thanks for helping!

              Comment

              • rcmanos
                Junior Member
                • Nov 2011
                • 10

                #8
                Originally posted by oscarel
                Are you sure the ty-wraps aren't blocking water flow?

                Sent from my SAMSUNG-SGH-I997 using Tapatalk 2
                The water flow was ok. No problem with the ty-wraps.

                Thanks for noticing it!

                Comment

                • srislash
                  Not there yet
                  • Mar 2011
                  • 7673

                  #9
                  8khz is the frequency and probably correct.The timing is different.If it is a D wynd then it should be set low.If it is a Y wynd it should be medium.
                  I suppose you could have a bad motor.I don't know how to check that though.

                  Comment

                  • rcmanos
                    Junior Member
                    • Nov 2011
                    • 10

                    #10
                    Originally posted by srislash
                    8khz is the frequency and probably correct.The timing is different.If it is a D wynd then it should be set low.If it is a Y wynd it should be medium.
                    I suppose you could have a bad motor.I don't know how to check that though.
                    You are right.
                    The "pwm rate" is set to 8khz.
                    The timing is set to "auto". I don't know if it is Y or D wynd. The model is: "LBP5682/3D". Does 3D means that it is D wynd?

                    Thank you!

                    Comment

                    • martin
                      Fast Electric Addict!
                      • Aug 2010
                      • 2887

                      #11
                      If your using a 1 piece shaft then you want much more than 1mm gap between the dog & stinger, could be the dog bottomed against the stinger when the flex shortened with wind up.

                      Comment

                      • srislash
                        Not there yet
                        • Mar 2011
                        • 7673

                        #12
                        Rcmaonos,The "3D" should mean D wynd.I agree with Martin on the flex, but geez,I would think a 5682 would have snapped the flex.

                        Comment

                        • tryinotocrash
                          Senior Member
                          • May 2012
                          • 190

                          #13
                          OH NO ! That was such a nice paint job. :-( That blows. Should have the same gap as the dia. of the cable drive. Seems like some other issue for that to happen though. What is the voltage rating for the 240 sword? When you say parallel do you mean pos to pos and neg to neg? or did it go 10s 1p as in pos to neg then one pos one neg?
                          Don't forget to put your brain in gear before you engage your mouth! Thanks Dad!

                          Comment

                          • rcmanos
                            Junior Member
                            • Nov 2011
                            • 10

                            #14
                            The shaft is one piece. It is 1/4' (6.35mm) in diameter.
                            How much should be the gap to be sure?
                            The 240A esc is rated for 12s. The battaries was conected posatie to posative and negative to negarive.

                            The paint job turn out to be a waste of money...
                            I should first set the boat right and then paint it.

                            I will post some pictures of how it looks now, after the repair.

                            Thanks everybody. Any other suggestions?

                            Comment

                            • martin
                              Fast Electric Addict!
                              • Aug 2010
                              • 2887

                              #15
                              Ive not used 1/4" on electrics only up to 3/16", theirs been many discussions on size of gap needed on 1 piece flexes. A lot seem to agree the gap should be what ever the diam of the flex is,If thats a bit big a gap it dosnt matter as your sure the dog wont bottom out. Normally when they bottom out you can stess the shaft & break them but also possible to load the motor & increase amp draw.

                              Comment

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