NEW Pro Boat Impluse 31 RTR V2

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  • hobby_man
    Senior Member
    • Sep 2011
    • 103

    #46
    chart

    http://forums.offshoreelectrics.com/...2&d=1288301845

    Comment

    • mannytx1
      Fast Electric Adict!
      • Oct 2012
      • 99

      #47
      impulse 31 v2 appropriate set-up max 5S

      100_0181.jpgmotor 1800kv max 5S=18.5v - 21v 33,300rpm - 37,800rpm
      propx442

      NO 6S
      Last edited by mannytx1; 12-20-2012, 11:51 PM.

      Comment

      • Niky
        Member
        • Sep 2012
        • 61

        #48
        Hi Guys,
        so finally, it's exact what the guys saying at forum:
        that 1800kv motor is not compatible with 6s,(should be 1600kv), but why the Proboat gives the combination of 1800kv motor & 80A ESC compatible on 6s???
        Thanks,salute all Niky.

        Comment

        • mannytx1
          Fast Electric Adict!
          • Oct 2012
          • 99

          #49
          recommended for brushless motor max 40000rpm
          100_0185.jpg
          4s motor 2200kv 4s=4.2vx4=16.8 16.8x2200=36960rpm
          5s motor 1800kv 5s=4.2vx5=21v 21x1800=37800rpm
          6s motor 1500kv 6s=4.2vx6=25.2v 25.2x1500=37800rpm

          motor A3630 imp volt 12-22.2v 50A 4S-5S
          motor dynm3830 ???????
          max rpm ?????????

          Comment

          • dana
            Banned
            • Mar 2010
            • 3573

            #50
            Originally posted by mannytx1
            recommended for brushless motor max 40000rpm
            [ATTACH=CONFIG]86890[/ATTACH]
            4s motor 2200kv 4s=4.2vx4=16.8 16.8x2200=36960rpm
            5s motor 1800kv 5s=4.2vx5=21v 21x1800=37800rpm
            6s motor 1500kv 6s=4.2vx6=25.2v 25.2x1500=37800rpm


            motor A3630 imp volt 12-22.2v 50A 4S-5S
            motor dynm3830 ???????
            max rpm ?????????
            Not quite how it works. Multiply by 3.7v not 4.2

            Comment

            • mannytx1
              Fast Electric Adict!
              • Oct 2012
              • 99

              #51
              No DANA Multiply by 4.2v max voltage100_0182.jpg
              battery / nominal voltage / maximum charge voltage / minimum discharge voltage
              1S / 3.7v / 4.2v / 3.2v
              2S / 7.4v / 8.4v / 6.4v
              3S / 11.1v / 12.6v / 9.6v
              4S / 14.8v / 16.8v / 12.8v
              5S / 18.5v / 21.0v / 16.0v
              6S / 22.2v / 25.2v / 19.2v

              Comment

              • dana
                Banned
                • Mar 2010
                • 3573

                #52
                I see what you mean, but still not quite rite. Do not multiply by 4.2

                Comment

                • Darin Jordan
                  Fast Electric Addict!
                  • Apr 2007
                  • 8335

                  #53
                  You are both "right"... 3.7 is nominal... 4.2 is optimum... However, there are almost NO, if any, cells that will be 4.2V under any load at all...

                  You are better to figure out your setups using 3.7 or 3.8V/cell, and calculate from there. And that would be for GOOD cells... VERY good cells might.... MIGHT, hold 3.9 or 4.0V/cell for a very short period of time at the beginning of the discharge cycle (first 20-30 seconds), but even that is a push...

                  I do all my "guestimation" using 3.7V/Cell...
                  Darin E. Jordan - Renton, WA
                  "Self-proclaimed skill-less leader in the hobby."

                  Comment

                  • dana
                    Banned
                    • Mar 2010
                    • 3573

                    #54
                    Thanks darrin, i was feeling too lazy to explain that lol

                    Comment

                    • mannytx1
                      Fast Electric Adict!
                      • Oct 2012
                      • 99

                      #55
                      D-curve2.jpg
                      Each cell of a LiPo has a nominal voltage rating of 3,7 Volt and a maximum charge voltage of 4,22 Volt (4,2V is standard).

                      That means the LiPo is used in a "voltage-window" ranging between 3Volt and 4,2Volt.

                      In contrary to a normal accumulator the voltage of the LiPo cells will not sink below 3 Volt !.

                      If a cell is discharged below 3 Volt, this will cause irreparable damages. Afterwards a complete charging is not possible and its shelf life is very short.
                      Attached Files
                      Last edited by mannytx1; 12-29-2012, 12:18 PM.

                      Comment

                      • dana
                        Banned
                        • Mar 2010
                        • 3573

                        #56
                        Originally posted by mannytx1
                        [ATTACH=CONFIG]0[/ATTACH]
                        Each cell of a LiPo has a nominal voltage rating of 3,7 Volt and a maximum charge voltage of 4,22 Volt (4,2V is standard).

                        That means the LiPo is used in a "voltage-window" ranging between 3Volt and 4,2Volt.

                        In contrary to a normal accumulator the voltage of the LiPo cells will not sink below 3 Volt !.

                        If a cell is discharged below 3 Volt, this will cause irreparable damages. Afterwards a complete charging is not possible and its shelf life is very short.
                        okay… so the point here is?
                        you still multiply by 3.7 to figure your rpm's

                        Comment

                        • Darin Jordan
                          Fast Electric Addict!
                          • Apr 2007
                          • 8335

                          #57
                          Originally posted by dana
                          okay… so the point here is?
                          I'm wondering the same thing... Am I being told that all these years I've been doing it wrong??
                          Darin E. Jordan - Renton, WA
                          "Self-proclaimed skill-less leader in the hobby."

                          Comment

                          • dana
                            Banned
                            • Mar 2010
                            • 3573

                            #58
                            Originally posted by Darin Jordan
                            I'm wondering the same thing... Am I being told that all these years I've been doing it wrong??
                            apparently the other 99.9% of us here have been too darin… dont feel bad

                            Comment

                            • mannytx1
                              Fast Electric Adict!
                              • Oct 2012
                              • 99

                              #59
                              DARIN JORDAN
                              How many ships burn per year?

                              Comment

                              • dana
                                Banned
                                • Mar 2010
                                • 3573

                                #60
                                Originally posted by mannytx1
                                DARIN JORDAN
                                How many ships burn per year?
                                well darrin? lol… what is going on here manny….?

                                Comment

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