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Modify servo

Home › Forums › R/C & Accessories › Modify servo

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  • 21 August 2014 at 22:28 #51467
    melvin hall
    Participant
      @melvinhall89458

      I am thinking of using a servo to elevate gun barrels on a model. I was wondering if its possible to modify a servo so when its moved, it stays where it is and doesn't go back to the middle position?

      21 August 2014 at 22:28 #5321
      melvin hall
      Participant
        @melvinhall89458

        Looking to modify a servo for model ship function

        21 August 2014 at 23:10 #51468
        Dave Milbourn
        Participant
          @davemilbourn48782

          Sounds like you might need one of these **LINK**
          A servo will always follow the movement of the Tx stick unless you put a device like this in between the servo and the receiver to alter that.

          Dave M

          22 August 2014 at 09:58 #51470
          Malcolm Frary
          Participant
            @malcolmfrary95515

            A cheap alternative is to fix the stick so it stays put when you let go or remove the servo electronics and use a small ESC, effectively turning the servo into a motor and gearbox.

            22 August 2014 at 16:39 #51473
            melvin hall
            Participant
              @melvinhall89458

              Ok will try that, thanks for the help!

              1 September 2014 at 22:31 #51789
              Jim Pinner
              Participant
                @jimpinner

                Hi all I am a new member but have subscribed to Model Boats for years.

                I am about to start a 1/16th Severn Class lifeboat and want to have working wipers. I know this will be servo controlled but how does the servo operate on a continual basis when switched on the Tx?

                Any advise would be appreciated

                Jim

                1 September 2014 at 22:43 #51791
                lnvisibleman
                Participant
                  @lnvisibleman

                  Jim

                  I would have thought that it may be better to get a small very slow geared motor     http://www.ebay.co.uk/itm/MICRO-GEARED-ELECTRIC-MOTOR-120-rpm-3-6v-FOR-RADAR-CRANE-ACCESSORY-DRIVE-/261540850532?pt=UK_ToysGames_RadioControlled_JN&hash=item3ce50cab64              and make up the gear to change rotary to oscillating movement as in a real wiper motor. That can then operate from a simple switch.

                  Mike ( Think loco wheels, only in reverse )

                  Edited By lnvisibleman on 01/09/2014 22:46:38

                  1 September 2014 at 22:58 #51792
                  Jim Pinner
                  Participant
                    @jimpinner

                    Hi Mike Doh why didn't i think of that such a simple solution to what appeared to be a difficult problem.

                    Many thanks

                    Jim

                    9 September 2014 at 13:37 #51933
                    melvin hall
                    Participant
                      @melvinhall89458

                      Hi,

                      Thanks for the suggestions.

                      I bought a servo control unit, and it will give the correct slow control for gun barrel elevation.

                      Is it possible to use the same method to rotate a turret? Is is possible to modify a servo so it turns farther than just 45 degrees either way?

                      9 September 2014 at 17:40 #51938
                      Malcolm Frary
                      Participant
                        @malcolmfrary95515

                        Yes the servo can be made to travel further http://www.modelradioworkshop.co.uk/products/turret-servo-controller

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