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    Display : All categories 0 Radio / Servos 633 Servos 166 All Servos 166

    RJX FS-0521HV Metal Gear Digital Servo Ultra High Speed and Torque 21.3kg / 0.05sec / 68g

    RJX FS-0521HV Metal Gear Digital Servo Ultra High Speed and Torque 21.3kg / 0.05sec / 68g

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    RJX FS-0521HV Metal Gear Digital Servo Ultra High Speed and Torque 21.3kg / 0.05sec / 68g

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    Product Description

    The RJX FS-0521HV provides the ultimate in performance for standard size servos. Cranking out a whopping 21.3kg and 0.05sec transit speed @ 8.4V, you will be hard pressed to find a better servo for your money. The massive torque and lightning fast speed makes this servo ideal for use in large 3D helicopters as a cyclic or tail servo, giant scale airplanes and even large cars/trucks. The entire gear train is metal, making stripped gears virtually impossible. The case is machined from aluminum alloy providing the ultimate in durability and offering excellent heat dissipation.

    The FS-0521HV is a true high-voltage servo capable of operating at a constant 8.4V, yet still yields impressive numbers at as low as a 6V input. This makes it a very versatile servo which can be used in many different applications.

    A full set of servo hardware is included, as well as an alloy servo arm ideal for use with helicopter cyclic servo applications.

    Specs:
    Operating Voltage: 6.0~8.4V
    Torque: 17kg/cm (236.1oz/in) @ 6.0V 19.5kg/cm (270.9oz/in) @ 7.4V, 21.3kg/cm (295.9oz/in) @ 8.4V
    Speed: 0.07sec/60° @ 6.0V0.055sec/60° @ 7.4V0.05sec/60° @8.4V
    Frequency: 1520us/333hz
    Gear Type: All metal gear
    Spline Count: 25T
    Motor Type: Coreless
    Gear Type: Digital
    Plug Type: JR
    Dimensions: 40x20x37mm
    Weight: 68g

     

    Product Specifications
    • Servo Torque(kg)(min. 0.01kg) 21.30
    • Servo Speed (Sec/60deg) 0.05
    • Servo A(mm) 42.00
    • Servo B(mm) 41.00
    • Servo C(mm) 38.00
    • Servo D(mm) 20.00
    • Servo E(mm) 55.00
    • Servo F(mm) 25.00
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    Dimension Diagram Guide

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    Reviews

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    RCPavel | Verified Buyer

    • Overall
    • Quality
    • Value

    Certified Buyer Rated

    Oct 13, 2015

    Got them last week, wery nice, perfect design, super precise, strong, fast. The only question is the durability.

    Brandon | Verified Buyer

    • Overall
    • Quality
    • Value

    Customer Rated

    Aug 02, 2015

    Fast, precise, powerful, and indestructible. Specs are dead-on. I've modified 4 of these for continuous rotation to power a combat robot. They run extremely smoothly and ice-cold, even when stalled. They should handle over-voltaging well. No need for plastic servo arms since the gear train and bearings are rock solid (and easily replaceable).

    GAMON | Verified Buyer

    • Overall
    • Quality
    • Value

    Customer Rated

    Mar 02, 2015

    High speed under load. High precision. At the same time - a phenomenally quiet servo. Will be used on 1/8 on_road

    Goliaph | Verified Buyer

    • Overall
    • Quality
    • Value

    Customer Rated

    Feb 10, 2015

    Excellent.

    I'm using it in my 1/8 e-buggy(dex408). Very fast and powerful with 4.5A / 7.2V BEC from HK.
    I've disassembled it and made it waterproof before winter championship (gearbox with extra grease Gummi-Isolierung(ger.) on elements foam-rubber piece between servo and servo horn). 4 events passed at temp from -15 to 3 C with show and water condidions.

    It's perfect.

    nesperatu | Verified Buyer

    • Overall
    • Quality
    • Value

    Certified Buyer Rated

    Oct 03, 2014

    rnler gerekten ok kaliteli

    Emmanuel | Verified Buyer

    • Overall
    • Quality
    • Value

    Customer Rated

    Aug 19, 2014

    Pros: EVERYTHING
    Cons: None, really
    That's one fast servo. And strong. In fact, it is the best I've ever seen. At that price, get it. Get it. Worth it. Yup. mhm.

    vadson | Verified Buyer

    • Overall
    • Quality
    • Value

    Certified Buyer Rated

    Jun 02, 2014

    These are the best servos for the helicopter. I installed them on gasoline helicopter 700 class. They work perfectly.

    SaltCritters | Verified Buyer

    • Overall
    • Quality
    • Value

    Customer Rated

    Apr 07, 2014

    These servos are so solid feeling! I bought four of them for a 30cc plane. one started acting up for whatever reason. Told Hobby King about it and they offered to send me a new one or refund me! They didn't even want the faulty one back! Amazing service!

    Piotr | Verified Buyer

    • Overall
    • Quality
    • Value

    Customer Rated

    Feb 07, 2014

    We test it clone servoking here: http://hobbyking.by/testirovanie-servoking-ds-695hv-i-servoking-ds-696ihv.html

    For this price the best servos. on 600size heli with DFC head after hard crash not break at all! Very strong bearings and gears!

    | Verified Buyer

    • Overall
    • Quality
    • Value

    Certified Buyer Rated

    Oct 29, 2013

    RJX FS-0521HV Metal Gear Digital Servo Ultra High Speed and Torque 21.3kg / 0.05sec / 68g .. Is the real speeds?

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