What is the difference in props?

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  • eric-paul
    Luke Propwalker
    • Jan 2008
    • 34

    #1

    What is the difference in props?

    octura 1440; octura x440; octura m440
    are they not the same pitch and diameter?
  • ReddyWatts
    Fast Electric Addict!
    • Apr 2007
    • 1711

    #2
    14 are moderatley high lift for hydros and deep V's
    X4 are medium lift general purpose props
    M4 are like X4 but with the tongues removed to unload the prop
    ReddyWatts fleet photo
    M1 Supercat - Neu 1527 1Y, 8s / Mean Machine- Feigao 580, 8s, 120 HV esc
    Mean Machine - Feigao 540 14XL, 8s, 100 amp HV esc, X537/3

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    • eric-paul
      Luke Propwalker
      • Jan 2008
      • 34

      #3
      Thank you for the answer.

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      • andym
        More Go Than Show Prop Co
        • Apr 2007
        • 2406

        #4
        Hey Blane I think that a 14 series prop on a deep v would not be a great idea. Have run them on my riggers with good results though.

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        • ReddyWatts
          Fast Electric Addict!
          • Apr 2007
          • 1711

          #5
          I guess a moderatley high lift prop on a deep v can help hold the bow down? Got that from the Octura prop description list.

          Different types of Octura props

          12 are low lift ideal for submerged drive
          X4 are medium lift general purpose props
          M4 are like X4 but with the tongues removed to unload the prop
          Y are like X series but have 10% more pitch
          X5 are general all purpose med lift prop
          X6 are higher lift than X4 and suitable for surface/semi surface use
          14 are moderatley high lift for hydros and deep V's
          16 are high lift props for riggers and hydro's
          17 are the highest lift prop for riggers and outboards
          P7 are similar to 17 series but more rake and less lifti
          19 are high lift for riggers and hydro's
          V9 are moderate lift suitable for riggers, hydros and SAW racing
          20 are moderatley high lift suitable for riggers
          21 are high lift for riggers and hydro's 22 are high lift surface drive only good straight line speed
          Last edited by ReddyWatts; 09-21-2008, 08:14 AM.
          ReddyWatts fleet photo
          M1 Supercat - Neu 1527 1Y, 8s / Mean Machine- Feigao 580, 8s, 120 HV esc
          Mean Machine - Feigao 540 14XL, 8s, 100 amp HV esc, X537/3

          Comment

          • mtgoat
            Member
            • Apr 2008
            • 81

            #6
            Originally posted by ReddyWatts
            M4 are like X4 but with the tongues removed to unload the prop
            In practical terms, what effect does this have?

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            • ReddyWatts
              Fast Electric Addict!
              • Apr 2007
              • 1711

              #7
              The tongue is used mostly when taking off and low speed acceleration. Removing the tongue allows the prop to turn easier at high end rpm for a faster top speed.
              ReddyWatts fleet photo
              M1 Supercat - Neu 1527 1Y, 8s / Mean Machine- Feigao 580, 8s, 120 HV esc
              Mean Machine - Feigao 540 14XL, 8s, 100 amp HV esc, X537/3

              Comment

              • Doug Smock
                Moderator
                • Apr 2007
                • 5272

                #8
                Originally posted by mtgoat
                In practical terms, what effect does this have?
                This will help, "areas to cut"



                Doug
                MODEL BOAT RACER
                IMPBA President
                District 13 Director 2011- present
                IMPBA National Records Director 2009-2019
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                • Ocean Racer
                  Senior Member
                  • Sep 2007
                  • 502

                  #9
                  Originally posted by ReddyWatts
                  The tongue is used mostly when taking off and low speed acceleration. Removing the tongue allows the prop to turn easier at high end rpm for a faster top speed.
                  SO the tongue is epual to putting small tires on a car you take off quick but not for long. So from what I got from that is if you mess with the tongue you can get a perfect prop. You can shave a little off and get the right amount of acceleration to fly at the start. Plus you have a small enough tongue that you get a good top end. right
                  Failure is the First step to SUCCESS

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                  • andym
                    More Go Than Show Prop Co
                    • Apr 2007
                    • 2406

                    #10
                    Yes,..........................................

                    Comment

                    • Diegoboy
                      Administrator
                      • Mar 2007
                      • 7244

                      #11
                      Wow, pretty good stuff!
                      "A quick temper will make a fool of you soon enough."
                      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bruce Lee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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