32" hotr 90+mph

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  • Howard Lee
    Senior Member
    • Nov 2010
    • 198

    #61
    I have a 5000 5s on the left and a 5000 4s on the right side. 9s = 4.7 hp = 49950 = 90+mph.

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    • rearwheelin
      Fast Electric Addict!
      • Oct 2008
      • 1941

      #62
      I would go 10s.........
      "Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction."
      --Albert Einstein

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      • Rumdog
        Fast Electric Addict!
        • Mar 2009
        • 6453

        #63
        That easy, huh? 9s =4.7 hp. How many watts is the motor rated at? How many rpm is it rated for? What esc are you using? What prop will you be using?

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        • rawsonreyes
          Senior Member
          • Aug 2007
          • 102

          #64
          if fluid say it's possible then it is. it's not majic it physics let the man try and someone else might give it a shot.

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          • Rumdog
            Fast Electric Addict!
            • Mar 2009
            • 6453

            #65
            Of course it can be done. Just feels like I'm trying to pull teeth.

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            • Jacked1
              Senior Member
              • Jun 2010
              • 772

              #66
              I put 6s on a 3000kv 540L motor in my first bl setup. (oops)
              It worked until the magnets broke off the motor shaft.
              Fleet: 55" Quad inline T600 Cigarette boat, Twin Mean Machine, Twin T600 47" mystery mono, 4082 Surge Crusher, 1717 8s Genesis, 4074 Villain, "mini mono", 52" Bonzi, Prather Funcruiser, 2 DPI 3.5cc tunnels, 5' Styrofoam recover barge

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              • TotalPackage
                Banned
                • Jul 2010
                • 601

                #67
                seems obvious to me 3,501.5 watts / 37.8 = 92 amps!Sounds a very reasonable target to me howard. I think he chooses not to answer experts coz they should already know. If the shoe doesnt fit dont wear it. When u gonna run the boat player? Please hit 90!

                Comment

                • Howard Lee
                  Senior Member
                  • Nov 2010
                  • 198

                  #68
                  Originally posted by Rumdog
                  That easy, huh? 9s =4.7 hp. How many watts is the motor rated at? How many rpm is it rated for? What esc are you using? What prop will you be using?
                  You don't need to be a smart ass, if you need to know something then just ask. This is what i was told 33.3 x 120 x 90 / 746 = 4.82 . This is not my first boat. My genesis is faster then most. I'm not here to put people down, the things i have put in this thread is what has worked for me.

                  Comment

                  • ray schrauwen
                    Fast Electric Addict!
                    • Apr 2007
                    • 9471

                    #69
                    Originally posted by Howard Lee
                    You don't need to be a smart ass, if you need to know something then just ask. This is what i was told 33.3 x 120 x 90 / 746 = 4.82 . This is not my first boat. My genesis is faster then most. I'm not here to put people down, the things i have put in this thread is what has worked for me.
                    I thank you for your posts!!!
                    Nortavlag Bulc

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                    • TotalPackage
                      Banned
                      • Jul 2010
                      • 601

                      #70
                      Originally posted by Howard Lee
                      You don't need to be a smart ass, if you need to know something then just ask. This is what i was told 33.3 x 120 x 90 / 746 = 4.82 . This is not my first boat. My genesis is faster then most. I'm not here to put people down, the things i have put in this thread is what has worked for me.
                      Oh ok i see they calulated the cells at 3.7 versus 4.2 when i did my crude calculations I wasnt terribly far off. The 90 represents the efficiency but i think it should be .90 not to be a smart ass. But 1 would be 100 percent .90 is 90 percent right howard?

                      Comment

                      • Rumdog
                        Fast Electric Addict!
                        • Mar 2009
                        • 6453

                        #71
                        Not being a smart ass. My point was that i had asked a few questions with no response. Just curious how you are calculating amperage of a boat you havent run yet.
                        X... who asked you, bud?

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                        • Rumdog
                          Fast Electric Addict!
                          • Mar 2009
                          • 6453

                          #72
                          That motor is rated at 2000 watts continuous, 3500 burst.

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                          • Howard Lee
                            Senior Member
                            • Nov 2010
                            • 198

                            #73
                            I take the volts x amps x efficiency divide 746 and that how i calculate my hp.

                            Comment

                            • Rumdog
                              Fast Electric Addict!
                              • Mar 2009
                              • 6453

                              #74
                              Where are you getting your amp estimate?

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                              • Howard Lee
                                Senior Member
                                • Nov 2010
                                • 198

                                #75
                                The amps are rated at 120

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