just dont know

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  • hydroman2112
    Senior Member
    • Mar 2011
    • 105

    #1

    just dont know

    i used a s/f 240 esc leopard 5692 1090kv x455/3 prop on 8s burnt esc and i yhink motor is ruined to i checked water lines before i ran i have dual pick up rudder one line for esc and one for motor any info will help waited long time to run boat is 42" hydroplane . lipos are zippyflight max 14.8 4s1p 5000 mah 45c x2 in series
    Last edited by hydroman2112; 07-22-2012, 12:58 PM.
  • G-UNIT
    Senior Member
    • Nov 2009
    • 949

    #2
    That happened to me with a fiago 1090 and t180 on 6s, as it turned out the motor let go, broke a magnet and stilling applying voltage burn up the esc.
    pull your motor and feel if there is any tight spots in it if so that was probably the cause.

    Comment

    • hydroman2112
      Senior Member
      • Mar 2011
      • 105

      #3
      i pulled took it apart smells burnt pulled center rotor out put it back together does not feel smooth when i turn it over by hand

      Comment

      • G-UNIT
        Senior Member
        • Nov 2009
        • 949

        #4
        Any pieces broken on the magnets?
        sounds like something jamed the motor, are the windings fries?

        Comment

        • Make-a-Wake
          FE Rules!
          • Nov 2009
          • 5557

          #5
          That is ALOT of prop for that motor on 8s.....................i'd be willing to bet you were pulling 250+ amps easily. The ESC probably took the motor out with it.
          NEED PARALLEL CONNECTORS?? QUALITY 5.5MM, 8MM, 8 AND 10 AWG, GET THEM HERE: http://forums.offshoreelectrics.com/...est!&highlight=

          Comment

          • hydroman2112
            Senior Member
            • Mar 2011
            • 105

            #6
            no did not see any windings dont to bad still copper color connector leads are still solid could x455 prop been to big for motor

            Comment

            • hydroman2112
              Senior Member
              • Mar 2011
              • 105

              #7
              what would have a more suitable prop make a wake

              Comment

              • hydroman2112
                Senior Member
                • Mar 2011
                • 105

                #8
                i beleive your right make a wake motor smells burnt

                Comment

                • Make-a-Wake
                  FE Rules!
                  • Nov 2009
                  • 5557

                  #9
                  I would have started it our with an x448 or so......................
                  NEED PARALLEL CONNECTORS?? QUALITY 5.5MM, 8MM, 8 AND 10 AWG, GET THEM HERE: http://forums.offshoreelectrics.com/...est!&highlight=

                  Comment

                  • Fluid
                    Fast and Furious
                    • Apr 2007
                    • 8012

                    #10
                    I doubt that a small prop (relatively) would move a 42" hydro very well. I would question if the boat was running wet, how much time was spent off plane, etc. Hydros that size normally need props in the 60mm plus range. Too small and the boat may not even get on plane.





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                    • stadiumyamaha
                      Fast Electric Addict!
                      • Apr 2011
                      • 1284

                      #11
                      I've never had a motor take out a esc but have many esc's taken out by a motor failure.
                      white geico w/2200kv 3674 leopard 53.5mph 4s2p, geico w/ 1800kv outrunner 52mph on 4s2p, genesis w/2200kv castle 53.8 on 4s2p, impulse 31 w/2200kv castle, stock p1 and ul-1

                      Comment

                      • Make-a-Wake
                        FE Rules!
                        • Nov 2009
                        • 5557

                        #12
                        If you need to run a larger prop, 457 or up you probably should go 6s with that motor(or a new one)...................if you get a new motor and want to run 8s get the bigger 5698 in the 835kv and you can swing that prop you have, or go with an x455/3!!

                        http://www.offshoreelectrics.com/pro...o-5698&cat=148

                        http://www.offshoreelectrics.com/pro...d=oct-x455%2F3
                        NEED PARALLEL CONNECTORS?? QUALITY 5.5MM, 8MM, 8 AND 10 AWG, GET THEM HERE: http://forums.offshoreelectrics.com/...est!&highlight=

                        Comment

                        • Fluid
                          Fast and Furious
                          • Apr 2007
                          • 8012

                          #13
                          I've never had a motor take out a esc but have many esc's taken out by a motor failure.
                          What????? Please re-read your post.

                          HYDROMAN:

                          Was the boat running wet?
                          How long did you run?
                          How much time was spent off plane (trying to get on plane, slow speed running, etc)?
                          What batteries were you using - 10S1P? Brand? mAh? "C" rating?

                          We need more info to help you.










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                          • hydroman2112
                            Senior Member
                            • Mar 2011
                            • 105

                            #14
                            Zippyflightmax. 14.8 4s1p 5000 mah 45c x 2 in series there was still water in cooling jacket i kept up on plane the whole time running i see i made mistake when i put in prop size it was x455
                            Last edited by hydroman2112; 07-22-2012, 12:55 PM.

                            Comment

                            • Fluid
                              Fast and Furious
                              • Apr 2007
                              • 8012

                              #15
                              You made several poor choices for components. First off, the x455/3 is a lot of prop for that motor, as already stated. Second, ZippyFlightMax cells are not noted for high-amp performance....and I am pretty sure your setup was pulling a lot of amps. They are better suited for 100 amps and under. Their "C" rating is most certainly over-stated based onwhat I have personally witnessed and what boaters I trust tell me. I suspect that the packs could not supply what the motor was drawing, and this could have damaged the controller by itself. But since the motor seems damaged too, excess motor heat is the probable reason for the failure - caused by too high an amp draw. A shorted motor can take out an ESC very quickly. Third, the motor has a pretty high Kv even for a hydro, it is too easy to make a small increase in prop size and go from an okay setup to 'way too much amp draw. Happens all the time.

                              Solutions:
                              Choose a motor with a Kv between 750 and 850. That motor will have more torque and spin the larger, more efficient props required for the large hydro.
                              Choose an ESC which will handle at least 10S and 200 amps. This will give you adequate headroom for your setup.
                              Choose 2-bladed props to start with. They will have less amp draw but still enough of a thrust cone to move the big boat well.

                              There are other routes to take, but the above is what I'd do. If you choose quality parts it will be a fast and reliable boat, assuming you can set it up to run freely on the water and keep the throttle pinned most of the time. Lots of part throttle operation can really heat up an ESC. Good luck!


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