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Increasing motor speed

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  • Increasing motor speed

    Were running Andymark 4:0 motors. We attached two wheels and use app inventor 2 for programming. We fired them up and they just spit out the ball. If we drive up the wrap turn on motors, ball goes out just past the wheels. Can you increase the speed of the motors in the programming

  • #2
    The NeveRest 40 has a max speed of 160 RPM (with no load). You need approximately 1600 RPM to launch a ball with a two wheeled shooter.

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    • #3
      I just bought the NeveRest 3.7 Gearmotor (am-3461). Thinking it would solve the promblem. Is there a way to get the wheels to 1600 RPM

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      • #4
        The theoretical performance specs on Andymark's website list 1784 RPM as the max for the 3.7. If the motor is in RUN_WITHOUT_ENCODER mode and the power is set to 1.0 or -1.0, it should be moving faster than 1600 RPM.

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        • #5
          Originally posted by FTC8188 View Post
          I just bought the NeveRest 3.7 Gearmotor (am-3461). Thinking it would solve the promblem. Is there a way to get the wheels to 1600 RPM
          You can gear it to whatever speed you like. It is just a trade off of speed versus torque.

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          • #6
            The motor RPM is only the first element effecting your final particle speed.
            Once you have a high enough RPM, then you need to couple that speed to the particle effectively.

            You need a grippy wheel surface and the spacing between the wheel's or rolling surface needs to be tweaked to give the best possible combination of grip vs retaring force (the more you squeeze the ball, the more you slow down the motors as it goes through).

            You can go from dismal to great just be playing with materials and spacing.

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