1515 Neu motor

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  • EPower
    Banned
    • Mar 2009
    • 391

    #1

    1515 Neu motor

    here is a question for the Neu gurus
    I have a 33 in Mhz Lizard i want to run a 4s 2p setup in it i have Etti 150 Race Esc 4S/5300 mAh/25C lipos, witch 1515 Neu motor is suitable for it 1Y or 1.5D i have been sent some info but i.m more confused that i was beforeThis is not a race boat just something to blast around the pond
    This is the info i got
    Adrian
    In most boats racing a 300m course a 1515/1Y is the setup of choice drawing
    about 130 amps on 4S TP V2 5000s or similar; Esc's are Hydra 120 or 240
    usually props are worked 42mm diam - speeds are 80+ if you use a higher
    rated esc and twin packs you can run up to Octura M447 or simply enjoy
    runtimes longer than 2 minutes

    The 1515/1.5D is not suitable for a 4S mono - too many rpm - which means
    high amps 150-200 and ESC to match - OK if you run two packs and the higher
    power esc and watch all the temps very carefully - 42mm prop is close to the
    limit

    The brand and generation of 25C will make a big difference especially with
    the 1.5D

    Thanks
  • DISAR
    Fast Electric Addict!
    • Aug 2007
    • 1072

    #2
    I am not a guru, but from my experience with the NEUs is that they are very powerful and you don't need to have extremely high rpm. I agree with above that the 1515/1.5D (2700 kv) is too high and on 4s you might end up in burning the esc expecially in sports running start-stop-full -stop etc...
    The 1Y is very widely used-tested and recommend it with a 42mm prop, and if you want to be safer go for a 1515/2D (2050kv) but with a slightly bigger prop. abt 45mm for speed or 42 for more time
    Twin Cat 135, Sprintcat40 (single-twin), DF 35", Maritimo, Mean Machine, SV 27
    http://www.rcfastboats.com/

    Comment

    • Fluid
      Fast and Furious
      • Apr 2007
      • 8012

      #3
      The 1515/1Y is a commonly used RACE motor for hydros. IMO it is not at all suitable for a big sport mono. The 1515/2D or 1521/1.5D are more suitable but they are still quite powerful for sport running. In spite of its slightly higher cost I believe that the 1521/1.5D would work better for you. Regardless of which Neu motor you choose, you'll need good cells. I recommend 2P if you can afford them, but if you limit prop size and run time you can get along with 1P.





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      • Jesse J
        scale FE racer: Namba 826
        • Aug 2008
        • 7083

        #4
        dang, 'nother double post
        Last edited by Jesse J; 05-13-2009, 12:13 PM. Reason: double post
        "Look good doin' it"
        See the fleet

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        • Jesse J
          scale FE racer: Namba 826
          • Aug 2008
          • 7083

          #5
          Hey, hope I can jump in and share in the Neu club.
          I am setting up my DF33 exactly as Jay recommends 1521/1.5D, Etti 150 ESC, 4S2P Flighpower 5000mah 25C batts and an X447/3 prop - sound too big a prop?

          I have question: 1515/1D motor - 29" hydro, 2S, x6/442 prop? or bigger? OK with HM 200amp ESC?

          What's the difference between D and Y (aside from different KV)?
          "Look good doin' it"
          See the fleet

          Comment

          • EPower
            Banned
            • Mar 2009
            • 391

            #6
            Originally posted by Jesse J
            Hey, hope I can jump in and share in the Neu club.
            I am setting up my DF33 exactly as Jay recommends 1521/1.5D, Etti 150 ESC, 4S2P Flighpower 5000mah 25C batts and an X447/3 prop - sound too big a prop?

            I have question: 1515/1D motor - 29" hydro, 2S, x6/442 prop? or bigger? OK with HM 200amp ESC?

            What's the difference between D and Y (aside from different KV)?
            Hi i'm not 100% sure but i think the D and Y have something to do with the windings of the motor

            Comment

            • Jesse J
              scale FE racer: Namba 826
              • Aug 2008
              • 7083

              #7
              maybe different thickness wire, so it give you two sets of multiples (d and y) to choose from? I notice that the numbers in front of the letter refer to multiples of the KV rating, but the letters had me stumped.
              "Look good doin' it"
              See the fleet

              Comment

              • EPower
                Banned
                • Mar 2009
                • 391

                #8
                Originally posted by Jesse J
                maybe different thickness wire, so it give you two sets of multiples (d and y) to choose from? I notice that the numbers in front of the letter refer to multiples of the KV rating, but the letters had me stumped.
                Maybe not sure

                Comment

                • Flyguy55
                  Senior Member
                  • Jan 2008
                  • 216

                  #9
                  IMO The 1515 1Y has a KV of 2200 . The 1.5 D has a KV of 2700 The 2 D KV is 2050 .
                  The 1515 1Y is a good race motor for a 33" well set up mono with a X447 , and would be fine sport motor with a X440
                  or X442 - X445.
                  In simple terms , The Y winds is series wound , in general has more torque . The D winds are parallel wound , use more amps , higher RPM less torque with the same number of winds as a Y wind.

                  A weekend ago I raced a Lizard with an SV27 motor and it was very fast in LSO . I think It was faster then My DF 29 with the same power. I got the starts but Rusty pushed me very hard every heat . Unless your racing I doubt you need NEU power .

                  Comment

                  • crabstick
                    Senior Member
                    • Jul 2008
                    • 954

                    #10
                    Adrian

                    Why dont you set the Lizard up for P restricted offshore ?? keep the KB on 4s2p and its done!

                    lest then you can race it in a class

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

                    Comment

                    • EPower
                      Banned
                      • Mar 2009
                      • 391

                      #11
                      Originally posted by crabstick
                      Adrian

                      Why dont you set the Lizard up for P restricted offshore ?? keep the KB on 4s2p and its done!

                      lest then you can race it in a class

                      Yeah Might get one of these KB45-08L 2300kv and be done with it

                      Comment

                      • EPower
                        Banned
                        • Mar 2009
                        • 391

                        #12
                        Originally posted by Flyguy55
                        IMO The 1515 1Y has a KV of 2200 . The 1.5 D has a KV of 2700 The 2 D KV is 2050 .
                        The 1515 1Y is a good race motor for a 33" well set up mono with a X447 , and would be fine sport motor with a X440
                        or X442 - X445.
                        In simple terms , The Y winds is series wound , in general has more torque . The D winds are parallel wound , use more amps , higher RPM less torque with the same number of winds as a Y wind.

                        A weekend ago I raced a Lizard with an SV27 motor and it was very fast in LSO . I think It was faster then My DF 29 with the same power. I got the starts but Rusty pushed me very hard every heat . Unless your racing I doubt you need NEU power .
                        I would have thought that the sv27 motor would have been a bit small for it i run KB8Xl in it now

                        Comment

                        • knpc
                          Senior Member
                          • Feb 2008
                          • 566

                          #13
                          I have a 1515 1y in my df33 on 4s2p and its great. It does 54-55 mph with a x642 or for longer run times a x637/x640 and its still around 50 mph. Its seems like a great setup for this size mono.
                          Rico 29, Sprintcat 34, Insane FE 30 Hydro, 43'' Aeromarine Conquest

                          Comment

                          • Fluid
                            Fast and Furious
                            • Apr 2007
                            • 8012

                            #14
                            The Lizard is not a DF33 and the one I race against in P Mono is pretty flighty at higher speeds - no wonder it runs so well with that lower-powered LSO setup. And a racing setup is not a "blast around the pond" sport setup regardless of the prop used.

                            Running a high-powered Neu at high rpm/low load with a small prop is not efficient and can result in a hot motor/ESC. As Dick stated, a Neu motor is probably overkill for your intended use, a good 9XL or 10XL is probably a better sport motor choice for that hull.

                            Do whatever you want - it's your money. But you did ask for input.


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                            • knpc
                              Senior Member
                              • Feb 2008
                              • 566

                              #15
                              I don't know how the lizard handles at 50+, I was just giving him a setup of a similar size mono. I have a 9xl in my other mono and it works well also with speeds in the upper 40s.
                              Rico 29, Sprintcat 34, Insane FE 30 Hydro, 43'' Aeromarine Conquest

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