Hitec HS-81 - Standard Micro Servo

Specifications

Modulation: Analog
Torque: 4.8V: 36.00 oz-in (2.59 kg-cm)
6.0V: 42.00 oz-in (3.02 kg-cm)
Speed: 4.8V: 0.11 sec/60°
6.0V: 0.09 sec/60°
Weight: 0.58 oz (16.4 g)
Dimensions: Length:1.17 in (29.7 mm)
Width:0.47 in (11.9 mm)
Height:1.16 in (29.5 mm)
Motor Type: 3-pole
Gear Type: Plastic
Rotation/Support: Bushing
Rotational Range: 180°
Pulse Cycle: 20 ms
Pulse Width: 900-2100 µs
Connector Type: (add)
Hitec HS-81
Brand: Hitec
Product Number: 31081S
Typical Price: 17.95 USD
Compare: add+ view

Notes

Reviews of Hitec HS-81 (4)

  • Rating:

    Application(s): 1500mm warbird

    Comments: These are cheap so i guess you get what you pay for. The gears strip easily. Had a crash and both ailerin servos striped.

  • Rating:

    Application(s): The HS-80 and later the HS-81 has been used for elevon servos in the Zagi THL and all of the electric flying wings for 15 years.

    Comments: The way we rate servos is by service, availability and price. The HS-81 rates high for our mixed elevon application. Very few returns or user issues. It's a reliable servo.

  • Rating:

    Application(s): Mid-size power planes and gliders

    Comments: I have been disappointed by these servos. Sure, they are cheap, but they develop slop, and they strip easily. Hitec HS-85MGs are the same size but are far stronger and better. But then again, 85s cost around twice as much.

  • Rating:

    Application(s): Elevon control, CombatWings MiniXE (100mph 34"flying wing)

    Comments: A solid well modulated servo. Quick, precise, and crash resistant. Very impressive for a micro servo. I frequently had roll rates exceeding 600deg/sec and yet was able to instinctively enter level flight at will.

Submit a review of Hitec HS-81