Motor choice

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  • mikesf
    Member
    • Oct 2008
    • 96
    #1

    Motor choice

    Dealing with nitro's and FEs it is now time to get into more to scale boats...

    I currently have a brushed scale Pilot boat which I bought RTR from a friend and I have ordered an Equipage Florida 80 scale wooden speedboat. The boat has a length of 31" and weighs around 6lbs. The manufacturer suggests a Speed 700/9.6V and 6 - 14 cells with a 40A ESC.

    I don't feel like getting to brushed motors, and I have one 36-50 2700KV brushless watercooled motor and a 35A ESC and a couple of 11.1V lipos. I can get also a 60A or a 100A ESC if needed but I will have to immobilise one functional boat.

    Do you think that I can go brushless straightaway, saving the cost to get the motor/esc have a good performance(not tug-like but not blazing-fast, just a good speed for a scale wooden speedboat) without tearing the boat apart on the first launch...

    The hull is this:



    and a product page:

    http://www.rccommand.com/Florida80.php


    Thanks for your time to go through this... any comment welcome...
    Tags: None
    • Steven Vaccaro
      Administrator
      • Apr 2007
      • 8718
      #2
      I think on 3s you will have to much rpm for a scale boat of that size and weight. For a scale boat on 3s lipo, I would personally run a 2000kv motor.
      Steven Vaccaro

      Where Racing on a Budget is a Reality!

        Comment

        • mikesf
          Member
          • Oct 2008
          • 96
          #3
          Thanks for the lightning speed answer...

          I would like to use the 2700 motor that's standing on the bench, what if I use 7.4V 4000mah lipos? I also have a couple of these...

          Thanks

          Mike

            Comment

            • Steven Vaccaro
              Administrator
              • Apr 2007
              • 8718
              #4
              You just dont have a ton of torque with the 2700. With 2s the rpm range will be much better for the scale boat. I would start with a small prop. Maybe 32mm or so.
              Steven Vaccaro

              Where Racing on a Budget is a Reality!

                Comment

                • mikesf
                  Member
                  • Oct 2008
                  • 96
                  #5
                  Would a 9turn XL KB brushless that you have on sale be more close to the suggested 700 brushed?

                  Thanks,

                  Mike

                    Comment

                    • Steven Vaccaro
                      Administrator
                      • Apr 2007
                      • 8718
                      #6
                      Thats really over kill for that size boat and a real amp hog. If buying a new motor I would get a Feigao 12L, but than you would need a new esc with a 60-70 amp constant rating.
                      Steven Vaccaro

                      Where Racing on a Budget is a Reality!

                        Comment

                        • Rex R
                          Senior Member
                          • Apr 2007
                          • 992
                          #7
                          best if you fiberglass that wood boat before it gets near water. equipage does not have a good track record with their wood boats.
                          the proboat 1500kv motor or the super vee motor(1800kv) on 14v would be my choice.
                          rex
                          Still waiting for my boat to come in.it came in

                            Comment

                            • mikesf
                              Member
                              • Oct 2008
                              • 96
                              #8
                              Thanks for the answers,

                              Steve I will probably give a try with the existing 2700 tha I have and if not succesfull I will get either the 12L or the AQ SV one...

                              Rex, thanks for the tip, I will get a polyester coat in the hull before launch...

                                Comment

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