Hitec HS-81 Servo Micro Universal HRC31081S

Hitec HS-81 Servo Micro Universal HRC31081S
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You get two choices with Hitec’s most popular servo the HS-81, resin or metal gears. A popular servo for smaller airplanes, heli’s, boats, cars and trucks, the HS-81 offers a fine balance between speed and torque.

  • Compact, lightweight design-ideal for electric airplanes and sailplanes
  • Strong, Dependable Gear Train
  • High Torque and High Speed
  • Mounts with Two Screws


Motor Type3 Pole
Bearing TypeNone
Speed (4.8V/6.0V)0.11 / 0.09 sec @ 60 deg.
Torque oz./in. (4.8V/6.0V)36 / 42
Torque kg./cm. (4.8V/6.0V): 2.6 / 3.0
Size in Inches1.17 x 0.47 x 1.16
Size in Millimeters29.72 x 11.94 x 29.46
Weight ounces0.58
Weight grams: 16.44

  • One HS-81S Micro Servo with 6-3/4 connector wire.
  • One 7/8x7/8 X-shaped servo horn
  • One 1-1/8long straight servo horn
  • Two brass eyelets
  • Two mounting screws
  • Two servo grommets
  • One servo horn screw
Hitec, JR or Airtronics-Z radio system.

This product was added to our catalog on January 2, 2007