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The 3121 is a direct
replacement for the 3021 servo. At 46.4 oz./in. torque, the
JR 3121 Mini servo offers 24% more torque than the 3021
servo. It now has the power to handle applications never
previously possible with a mini-sized servo.
The JR 3121 is ideal for a
wide range of applications, including: control surfaces of
small to medium sized planes, electric helicopters,
sailplanes, pylon racers, or anywhere a high-precision mini
servo with a lot of torque is desirable.
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