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Thread: Servo for locomotive Johnson bar???

  1. #1

    Servo for locomotive Johnson bar???

    When installing a micro servo to operate a Johnson bar (throttle lever) on a live steam 1:20.3 locomotive, must the servo throw travel to full lock to prevent burning out the servo when pressing the transmitter lever to the limit?
    This model's Johnson bar is usually thrown full forward, reverse or centered for neutral.
    The transmitter is a Planet 5 channel.

  2. #2
    No the servo does not need to go to it's limit. It can move and hold in any position.

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