Sprintcat .40 - "Norm"

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  • Brushless55
    Creator
    • Oct 2008
    • 9488

    #31
    Looking good man!
    .NAMBA20...Caterpillar UL-1, P-Spec OM29, P-Mono DF33, P-Spec JAE, Aussie 33" Hydro-LSH, Sprintcat CC2028 on 8s, PT SS45 Q Hydro, PS295 UL-1 power, OSE Brothers Outlaw QMono 4-sale, Rio 51z CC2028 on 8s

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    • crabstick
      Senior Member
      • Jul 2008
      • 954

      #32
      Ok finally got into pickup my strut.

      Its overkill, but hey, our pond gets rough and I need it to take a beating, I have broken struts in the past.

      Its an Insane gas sized skeg strut.

      Just about to embark on polishing it then will mount..

      Matt.
      FE, Nitro and Gas racing in Auckland
      www.rcboats.co.nz

      Comment

      • Simon.O.
        Fast Electric Addict!
        • Oct 2007
        • 1521

        #33
        That is a heavy duty build you have going there Matt. Great for the Wattle Downs rough stuff ! I am a bit of a sissy and wait untill the pond at Pupuke is flat or close.
        This NW weather we have is good to run at the Quarry.

        I had a yarn to Kim today about you and she told me all sorts of things......just kidding.

        When you have that OR powered beast up and running give me a call and we can meet at the Quarry and see how it runs. I am confident now that it will slap my cat !

        Shoot me a PM with your mob# or txt me at 021 027 03185

        Cheers
        Simon.
        See it....find the photos.....sketch it it....build it........with wood

        Comment

        • crabstick
          Senior Member
          • Jul 2008
          • 954

          #34
          Gotta make it strong, with the new wall around the pond the way the cross chop bounces off the walls as opposed to the banks and a few boats in race water or open water it can really chop up, the skeg strut helps also cats track nicely.

          I try not to run without a rescue dinghy after loosing a classic shovel with about $800 tied up in it for 2 years at hakanoa, so not so sure on Pupuke. At least wattle I can wade in there.

          Strut is now mounted



          Just about to make the strut bearing/stuffing tube etc, stuffing tube is annealing on the element as i type
          Last edited by crabstick; 06-02-2010, 05:39 AM.
          Matt.
          FE, Nitro and Gas racing in Auckland
          www.rcboats.co.nz

          Comment

          • crabstick
            Senior Member
            • Jul 2008
            • 954

            #35
            stuffing tube, and flex installed



            Uploaded with ImageShack.us

            Prop is a 47mm and it just looks tiny lol
            Matt.
            FE, Nitro and Gas racing in Auckland
            www.rcboats.co.nz

            Comment

            • crabstick
              Senior Member
              • Jul 2008
              • 954

              #36
              Will try get home tonight in daylight to take some decent pictures, the camera on my blackberry is absolutely useless under artificial light.

              Tonight's tasks are making a servo mount, polishing and mounting it and mounting the rubber boot on the inside of the transom for the steering rod.

              I have a way of doing this that works well on my cambell shovel, pics to come tonight
              Matt.
              FE, Nitro and Gas racing in Auckland
              www.rcboats.co.nz

              Comment

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

                #37
                To find out how many poles the motor has, take the can off and count the number of loops in the wire.

                Most high rpm outrunners of this size have at least 24-36 stator slots, but you can wing multiple slots into one phase. Not quite as efficient as a purpose-built stator, but loads cheaper. If you want higher rpm and more poles, you can rewind the motor with thicker wire going around only one stator tooth at a time (what's normally done). You'll need to find magnet wire that's around 16-14Ga though. Or use multiple strands of smaller wires like scorpion does. This is VERY difficult for a first-time-winder though. RCGroups has a lot of info about rewinding motors.


                EDIT>> One guy in the HK discussion board says 8 poles. Seems about right...

                Jon

                Comment

                • crabstick
                  Senior Member
                  • Jul 2008
                  • 954

                  #38
                  Thanks Jon, shes bolted in the boat now so I think im just going to run it..

                  Will hopefully test run on sunday at my club pond, Wattle Downs
                  Matt.
                  FE, Nitro and Gas racing in Auckland
                  www.rcboats.co.nz

                  Comment

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

                    #39
                    Well yeah, it's only a $32 motor...

                    Comment

                    • crabstick
                      Senior Member
                      • Jul 2008
                      • 954

                      #40
                      exactly!
                      Matt.
                      FE, Nitro and Gas racing in Auckland
                      www.rcboats.co.nz

                      Comment

                      • crabstick
                        Senior Member
                        • Jul 2008
                        • 954

                        #41






                        Some pics in natural light... Blackberry sucks donkey dork for pictures but you get the idea... HIHO SILVER!!
                        Matt.
                        FE, Nitro and Gas racing in Auckland
                        www.rcboats.co.nz

                        Comment

                        • Xfactor
                          Banned
                          • Mar 2009
                          • 861

                          #42
                          Cant wait to see it run . u know you will start a turnigy outrunner craze if this motor runs well @ 32 dollars

                          Comment

                          • crabstick
                            Senior Member
                            • Jul 2008
                            • 954

                            #43
                            It might just start a craze you never know



                            Video of the outrunner spinning up, rpms were still climbing when it hit 24000 rpm.

                            Gotta love the sound of it, that was on low timing, thus the wee stutter at the start
                            Matt.
                            FE, Nitro and Gas racing in Auckland
                            www.rcboats.co.nz

                            Comment

                            • crabstick
                              Senior Member
                              • Jul 2008
                              • 954

                              #44
                              just noticed that the ESC program doesn't read rpm on spool down once you set the throttle slider to zero
                              Matt.
                              FE, Nitro and Gas racing in Auckland
                              www.rcboats.co.nz

                              Comment

                              • Xfactor
                                Banned
                                • Mar 2009
                                • 861

                                #45
                                Meaning what crab?

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