more rpm motor vs more cells ?????

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  • netik racing
    Member
    • Jan 2010
    • 60
    #1

    more rpm motor vs more cells ?????

    ok so i own a mini bolt i currently have a 2600 kv 2 pole motor running on 4s with a 32mm prop and have reached my goal of 80 kph (50mph) now like every body else i want to push this boat till it explodes or fly's into a million bits...

    What i would like to do is get it to 100kph if i can....

    I don't know is should i go high kv motor 5280kv leopard motor on 3s so that's 58608 rpm i know that's insane but that's just me...and run a small prop???

    OR

    a mid range kv 2950 leopard and run it on 4s thats 43660 rpm and stick to the 32mm prop????

    I want to keep weight down were i can to max out the speed....

    Please help
    HOTR 32" Neu 1515 112 kph / Etti Demon rigger 3s leopard motor / 36" r2 hobbies twin tunnel with leopard 2200kv / Delta force 22 Hydro with dirty 2 pole motor / mini bolt with 380l motor good for about 60 kph
    Tags: None
    • sundog
      Platinum Card Member
      • Feb 2009
      • 878
      #2
      You need some weight to keep it on the water! Go with the 2950kv Leo on 4S and start with the 32mm prop and work up. You might consider a bearing strut for even higher speeds. The 5280kv motor is more suitable for 2S, and would require a bigger esc and high C rating lipos to keep them from puffing (40C or better continuous, not burst).
      Legend 36 sailboat, KMB Powerjet Ed Hardy Viper, ABC jet pwrd BBY Oval Master, ABC Hobby Jetski, NQD Tear Into's, HK Discovery 500, MickieBeez pwrd Jet Rigger!, Davette/Gravtix jet sprint, KMB Powerjet Pursuit, NQD pwrd Jet Catamaran!,Steam pwrd African Queen, Sidewinder airboat, Graupner Eco Power

        Comment

        • martin
          Fast Electric Addict!
          • Aug 2010
          • 2887
          #3
          The 5280kv motor is going to draw a lot more amps than the 2950kv motor, What size esc do you intend using with either.

            Comment

            • Alexgar
              Fast Electric Addict!
              • Aug 2009
              • 3534
              #4
              A higher kv motor draws more amps ie better batteries and bigger esc what about 2 small 5sbatteries in parallel?

                Comment

                • sundog
                  Platinum Card Member
                  • Feb 2009
                  • 878
                  #5
                  Originally posted by Alexgar
                  A higher kv motor draws more amps ie better batteries and bigger esc what about 2 small 5sbatteries in parallel?
                  That is an interesting thought. I believe 4S is as large (fat) as you can fit in the hull. That being said, what about 2) smaller (1500mah?) 3S lipos in series (6S1P), running a motor in the 1600-2000kv range. You could run a Seaking 35A esc, and start with a 34mm prop. Just thinking out loud here.
                  Last edited by sundog; 03-22-2012, 10:30 PM. Reason: spelling
                  Legend 36 sailboat, KMB Powerjet Ed Hardy Viper, ABC jet pwrd BBY Oval Master, ABC Hobby Jetski, NQD Tear Into's, HK Discovery 500, MickieBeez pwrd Jet Rigger!, Davette/Gravtix jet sprint, KMB Powerjet Pursuit, NQD pwrd Jet Catamaran!,Steam pwrd African Queen, Sidewinder airboat, Graupner Eco Power

                    Comment

                    • Alexgar
                      Fast Electric Addict!
                      • Aug 2009
                      • 3534
                      #6
                      sundog i dont think that esc is capable of 6s

                        Comment

                        • sundog
                          Platinum Card Member
                          • Feb 2009
                          • 878
                          #7
                          Whoops! You're right, Alex. The 35A Seaking can only handle 3S.
                          Legend 36 sailboat, KMB Powerjet Ed Hardy Viper, ABC jet pwrd BBY Oval Master, ABC Hobby Jetski, NQD Tear Into's, HK Discovery 500, MickieBeez pwrd Jet Rigger!, Davette/Gravtix jet sprint, KMB Powerjet Pursuit, NQD pwrd Jet Catamaran!,Steam pwrd African Queen, Sidewinder airboat, Graupner Eco Power

                            Comment

                            • netik racing
                              Member
                              • Jan 2010
                              • 60
                              #8
                              ok so im thinking the low kv and two 1300mah 45-90c 3s to make 6 s and we start with about 32mm-36mm then 40mm if im game....

                              Only problem can't find anywere with the lower 1800kv-2200kv motors...help...

                              Maythanks for you imput guys as soon as i find the motors i will buy one and see how we go...

                              i have a 70 amp esc in it at the moment but have a 120amp sitting there if i need it....

                              cheers netik'
                              HOTR 32" Neu 1515 112 kph / Etti Demon rigger 3s leopard motor / 36" r2 hobbies twin tunnel with leopard 2200kv / Delta force 22 Hydro with dirty 2 pole motor / mini bolt with 380l motor good for about 60 kph

                                Comment

                                • Make-a-Wake
                                  FE Rules!
                                  • Nov 2009
                                  • 5557
                                  #9
                                  If this Leopard 4 pole will fit you may consider the 2730kv on 4s with an x632.................that'll get you scootin'!!

                                  http://www.offshoreelectrics.com/pro...o-2860&cat=148
                                  NEED PARALLEL CONNECTORS?? QUALITY 5.5MM, 8MM, 8 AND 10 AWG, GET THEM HERE: http://forums.offshoreelectrics.com/...est!&highlight=

                                    Comment

                                    • sailr
                                      Fast Electric Addict!
                                      • Nov 2007
                                      • 6927
                                      #10
                                      Another motor to consider is the Tenshock Viper 5 pole 3200KV running on 3S. It is not on our website but is available from us.
                                      Mini Cat Racing USA
                                      www.minicatracingusa.com

                                        Comment

                                        • FRED
                                          Senior Member
                                          • Jul 2007
                                          • 233
                                          #11
                                          4S and too much-------------3s and 632 and correct amount of weight is no slouch.

                                            Comment

                                            • ozzie-crawl
                                              Fast Electric Addict!
                                              • Sep 2008
                                              • 2865
                                              #12
                                              Some of them tenshock motors are little rockets

                                                Comment

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