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> Servos & Parts > All Servos
> Servos & Parts > Park Servo 21-30g
> Servos & Parts > Power HD

  RATED:

Power HD 3688HB Digital Servo 25g/2.8kg/.07sec

Power HD 3688HB Digital Servo 25g/2.8kg/.07sec

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



PRODUCT ID: HD-3688HB

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Weight (g) 26
Torque (kg) 2.8
Speed(Sec/60deg) 0.07
A(mm) 32
B(mm) 35
C(mm) 29
D(mm) 14
E(mm) 48
F(mm) 19
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Customer Data

Weight: 55g
Quantity: 
International Warehouse
stock
10+
USA West Warehouse Out Of Stock
Price  $21.85

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 Customer rated
4137
crowns
  
 
Total of 36 discussions.
Fabio  3 points - 6/20/2014
 
Hello, can anyone tell me which screw is there to fix the Servo arm? I have lost mine an i can´*t find a screw that fits ... :(
Randall  1 points - 3/11/2014
 
First off I want to apologize for posting this in error- as you can see It went directly to your comments...this was my first attempt asking for assistance. would you happen to know what the load for this servo is ? 1520us 333hz, 760 us 560hz, 1520us 250 hz ?- I'm contemplating pairing this servo up w/ a Assan ga-250 gyro . I recall reading somewhere that this combination works very well... any help will be appreciated. thank-you.
 Adriaan 4 points
I set mine to 1520us at 250hz and works great on a GA 250
 contact303 269 points
GREAT servo on the GA250 I have same
setting can confirm Adriaan
Works really really well
Bambang  1 points - 2/12/2014
 
for this servo, what kind gyro are using compatible ? I have align gyro gp 780 , is this compatible or not ?
 Adriaan 4 points
How can you tell this guy to set his gyro to analogue when the servo is a digital servo?
 Randall 1 points
WTWUK would you happen to know what the load for this servo is ? 1520us 333hz, 760 us 560hz, 1520us 250 hz ?- I'm contemplating pairing this servo up w/ a Assan ga-250 gyro . I recall reading somewhere that this combination works very well... any help will be appreciated. thank-you.
 Adriaan 4 points
I understand what you saying but my servo works fine on digital setting on a GA 250 so it wont burn servos on all gyro set to digital!
porte  1 points - 12/3/2013
 
Is it a low profile servo ?
 Anthony 1 points
No it's just a standard mini servo size
Christoph  9 points - 10/22/2013
 
Servo failed after 10 flights as 450 tail servo.. instant crash, servo very hot
 Cacique 1 points
Hi, what kind of gyro are you using? I know this not work fine with 401B is better with GA250 or similar. regards
 Christoph 9 points
It was a KDS800 gyro. Meanwhile i replaced the servo with a cheap chinese HD clone from ebay for 10$ which works perfectly.
 Cacique 1 points
Your gyro is similar to HK401B, is clone of futaba gy401, you need a clone servo of futaba S9257 digital servo for your gyro, test with HK 28012MG
Customer Reviews
Overall Rating
WetPants
19 likes
ValueUNRATED
QualityUNRATED
10 thumbs up!
Great quality servo. Cable seem a bit thin though.
I stripped the gears on bad landing. Cant find spare gear parts anywhere. So maybe not so good value if I have to buy new one?


32 comments. Reply..

Overall Rating
Graham helis
374 likes
ValueUNRATED
QualityUNRATED
1 thumbs up!
just got mine to day, seems to be worth the wait.
i have all ways had good quailty servos over the years.
this one is Very Good.
i am going to use it in a HK 450, with a 401b
the speed is good centering is consistent,so overall
i am very pleased with the price and quality
as all ways it is five stars


2 comments. Reply..

Overall Rating
Graham helis
374 likes
ValueUNRATED
QualityUNRATED
1 thumbs up!
i have now had the chance to fly the servo.
i have got it on a HK450 PRO and A HK401B gyro
it is as good as the turnigy ds480 tail servo, i would go so far to say that it is faster in the heli.
very good quality, so Hk have done it again five stars


9 comments. Reply..

Overall Rating
Maccanaut
47 likes
ValueUNRATED
QualityUNRATED
1 thumbs up!
This servo is just as good as the DS520 as far as I can tell. Works beautifully on my Skya 450 Pro and is as fast as anything else I use. Great servo for the money!!


No comments. Reply..

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Overall Rating
Mastaofdisasta
166 likes
ValueUNRATED
QualityUNRATED
Like it?
Das Servo macht aus der Verpackung heraus einen guten Eindruck: Spielfrei, schnell und rueckstellgenau! Werde das Servo im HK-T 500 als Heckservo verbauen.


2 comments. Reply..

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