1/72 Gato 2.5" Sub Driver; Recommended Servos?

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  • wlambing
    Commander

    • Nov 2020
    • 359

    #1

    1/72 Gato 2.5" Sub Driver; Recommended Servos?

    I am engaged in building a 1/72 Gato. I had installed some servos that nicely fit the tray fore & aft, side to side. They're too frickin' tall!! I have used Futaba S3110 and S3114 units in the past (S3110s in my Type 23). Is there a recommended make and model of servo to cover the 4 functions this boat will use?? If you had a good running boat, what did you use?

    TIA,

    Bill
  • He Who Shall Not Be Named
    Moderator

    • Aug 2008
    • 13398

    #2
    Originally posted by wlambing
    I am engaged in building a 1/72 Gato. I had installed some servos that nicely fit the tray fore & aft, side to side. They're too frickin' tall!! I have used Futaba S3110 and S3114 units in the past (S3110s in my Type 23). Is there a recommended make and model of servo to cover the 4 functions this boat will use?? If you had a good running boat, what did you use?

    TIA,

    Bill
    Amazon.com: Sg90 9g Micro Servo Motor, Miuzei Mini Small Servos Motor Kit Metal Gear for Arduino RC Car Airplane Robot (10) : Toys & Games
    Who is John Galt?

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    • wlambing
      Commander

      • Nov 2020
      • 359

      #3
      Thank You! I'll check the fit dimensionally and proceed from there. :)

      Comment

      • wlambing
        Commander

        • Nov 2020
        • 359

        #4
        Servos are ordered up. Meanwhile, I'm doing stuff to further progress. Throwing paint around, test fitting bits and pieces, researching sail mods, etc. When I get the new servos, what hole in each servo arm gets the pushrod? I will use bow planes, bow planes retract, stern planes, and of course, rudder. I ask as I know these small servos have dainty arms and I don't want to wreck them by experimenting, if the correct answer is known.

        Take care, TIA,

        Bill

        Comment

        • He Who Shall Not Be Named
          Moderator

          • Aug 2008
          • 13398

          #5
          Originally posted by wlambing
          Servos are ordered up. Meanwhile, I'm doing stuff to further progress. Throwing paint around, test fitting bits and pieces, researching sail mods, etc. When I get the new servos, what hole in each servo arm gets the pushrod? I will use bow planes, bow planes retract, stern planes, and of course, rudder. I ask as I know these small servos have dainty arms and I don't want to wreck them by experimenting, if the correct answer is known.

          Take care, TIA,

          Bill
          Cut the servo horns back to retain only the three holes from the center -- you need to do this so the horn does not strike the inside of the cylinder during full-throw. Experiment with what gives at least a 30-degree throw of the control surface with full-through (end-points set at 100%-100%) of the servo. Fine tune at the transmitter -- the end-point adjustment, if you have that feature.

          I've found the second hole from the center (dirty-boy... get your mind out of the gutter you nasty old Auxilleryman, you!) to be the most useful.

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          Who is John Galt?

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