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Power HD 3688HB Digital Servo 2.8kg / 0.07sec / 25g

Power HD 3688HB Digital Servo 2....

A precise servo of around park-flyer size. Smaller than a standard servo yet larger than a mini. The 3688HB has a 2.8kg/cm stall torque weight and weighs only 25g.
For those looking for precision servo for their small- to medium sized plane, ...
HD-3688HB

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$22.20
55g
HD-3688HB


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Overview

A precise servo of around park-flyer size. Smaller than a standard servo yet larger than a mini. The 3688HB has a 2.8kg/cm stall torque weight and weighs only 25g.
For those looking for precision servo for their small- to medium sized plane, this would be a smart choice.

Model: HD-3688HB
Voltage: 4.5v~6v
Speed @ 4.8V: .08sec
Speed @ 6V: .07sec
Torque @ 4.8V: 2.3kg/cm
Torque @ 6V: 2.8kg/cm
Weight: 26g
Size: 35.5x28.6x15mm

Specs

Additional Information

  • Blade Count:
    N/A
  • Diameter X(Inch):
    No
  • SKU
    HD-3688HB
  • Weight(g)
    55.00
  • Length:
    72.00
  • Width:
    40.00
  • Height
    61.00
  • Speed (Sec/60deg)
    0.07
  • Torque(kg)(min. 0.01kg):
    2.80
  • Unit Weight (g):
    N/A
  • A(mm)
    32.00
  • B(mm)
    35.00
  • C(mm):
    29.00
  • D(mm):
    14.00
  • E(mm)
    48.00
  • F(mm)
    19.00
Discussion
Reviews

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I so far run two of these in two 450 size helis as tail servo, no problems so far and am happy with their performance.
ottimo veloce e affidabile
I bought this servo for my Copter X 450, and I can say that I am satisfied, the servo works well, and runs cool, but the finish on it is awful, plastic parts have whiskers sticking out, metal case is skewed a few degrees in relation to other servo parts. The overall feel of the servo is far worse than much cheaper servos I bought. Performance wise it is satisfying, and works with no problems so far.
This servo was faulty it just judders when using with my gimbal. Waiting for a refund
Fitted in my Gt12 for club racing. I have used it for 4 weeks now without any issues at all. Extremely fast and strong servo at an exceptional price!
Shall definitely be purchasing again.
Ein Superservo. Im 450-ger als Heckservo. Im 500-ter 3x Taumelservos. Macht sich echt gut.
wird das heck schon halten
i have 4 of these on my hk 500 so far i have had 2 fail 1 electrically in mid flight
the other rough landing gears stripped so im now looking for better servos
Worked great while it lasted. Very similar to the Align DS520 in size and performance and picks up exactly on the standard align mounting holes. I was very careful to set mine up to prevent any binding of the tail mechanism. It lasted about 50 flights then failed with no warning, tail just stopped responding. i was just hovering around doing nothing taxing. Luckily I landed with no damage. Tested the servo with servo tester and it was dead, no response at all.
Thought i must have been unlucky, got another one, checked again for no binding and changed ESC. This one also lasted about 50 flights before failing in an identical way. Stripped them both down and the problem appears to be the brushes burning up.
Two of these servos has stopped working for me.
In both cases the servos suddenly went to one end stop witout any apparent reason and after that the servo do not work. The servos had been used in 450 helis with a total running time of less than 3 hours each.
In one heli an Assan GA250 gyro was used and in the other a HK401 gyro
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Customer files
HD3688 SPec PDF download now [487kb]

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