Power HD HD-3688HB - Digital Servo


Modulation: Digital
Torque: 4.8V: 31.94 oz-in (2.30 kg-cm)
6.0V: 38.88 oz-in (2.80 kg-cm)
Speed: 4.8V: 0.08 sec/60°
6.0V: 0.07 sec/60°
Weight: 0.88 oz (25.0 g)
Dimensions: Length:1.40 in (35.5 mm)
Width:0.59 in (15.0 mm)
Height:1.13 in (28.6 mm)
Motor Type: 3-pole
Gear Type: Plastic
Rotation/Support: Single Bearing
Rotational Range: 154°
Pulse Cycle: 3 ms
Pulse Width: 800-2200 µs
Connector Type: JR
Power HD HD-3688HB
Brand: Power HD
Product Number: HD-3688HB
Typical Price: 29.99 USD
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Reviews of Power HD HD-3688HB (7)

  • Rating:

    Application(s): Tail servo for 450 Pro

    Comments: Used and still using this servo on my 2 year old CX450 Pro with a Spartan-RC DS760 gyro without any problems. Running on 4.8V
    gyro set to 1520usec/333Hz with 0.07usec/60degrees

  • Rating:

    Application(s): HK 450 Pro

    Comments: Me duro unos 15 vuelos, después se me rompió sin aviso ninguno, suerte que fue a 15 cms del suelo. Se calentaba un montón y no me fiaba un pelo, no lo recomiendo para nada...

  • Rating:

    Application(s): Tail servo for 450 Pro.

    Comments: Died in flight, luckily just on lift off so no damage... Worked fantastically before that, but alas...

  • Rating:

    Application(s): Trex 450 Tail Servo - used with Detrum GY48v Gyro

    Comments: I have this installed on 6 helis. On two so far I have experience failures, luckinly not in flight. Just like every said above, they work great and all of a sudden then start acting up and die. Nice package and nice looks but frankly for teh price (not cheap at $25!) they are not worth it.

  • Rating:

    Application(s): Tail rotor servo in an EXI 450.

    Comments: Performed perfectly up until the point where it mysteriously died for no reason. Was running at 6V, died after about 30 flights or so. Still powers up and holds center, but will not accept signal inputs.

  • Rating:

    Application(s): 500 heli tail servo.

    Comments: Also died in flight without warning sinse 6 flights. Caused bad crash. Until death works perfect. :(((

  • Rating:

    Application(s): 450 Pro Helicopter

    Comments: Used this servo on the tail of my 450 Pro Heli. Worked great for about two months and died in flight without warning. Running 4.8volts. I cannot recommend this servo. Beware!

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