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Gear ratio, speed and torque

Change teeth and stages to observe rotation direction, speed and torque.

    E03 · Gear ratio, speed and torque0.00 s · Ready

    Mechanical Engineering · Machines and forces / Principles and inquiry

    Gear ratio, speed and torque experiment guide

    Change teeth and stages to observe rotation direction, speed and torque.

    How does it work?

    Reducing speed increases torque while ideal shaft power stays equal.

    Key relationship

    ωout/ωin = (Nin/Nout)ⁿ · Tout/Tin = 1/|ωout/ωin|

    Try this investigation

    1. Change teeth and stages to observe rotation direction, speed and torque.
    2. Run and record each of the three reference settings.
    3. Change one variable and compare force, deformation or response with the reference records.

    Interpreting your results

    How does torque change in a reduction gear?

    It gets bigger · Reducing speed increases torque while ideal shaft power stays equal.

    Assumptions and limitations

    External gears have no slip or friction. Two stages form a compound train with the same tooth ratio per stage. Rotation is slowed for observation.