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  Item found in the following categories;
> Servos & Parts > All Servos
> Hardware & Accessories > Wheels/Landing Gear/Retracts > Retracts

  RATED:

Digital Servoless Retractable system (1pc)

Digital Servoless Retractable system (1pc)

The easiest way to put retracts in your plane. No need to install a control box, messy wiring or a complicated air system. Just screw in the retracts, connect to your Rx and youre ready!
Reliable servo mechanism with metal gearing and a high torque motor ensures trouble free flying!
Why bother with air systems when you can now have a realistic and reliable electric unit at a fraction of the price?!
Landing gear not included with the servoless retractable system.

Features:
Robust landing gear strut and mounting bracket
Built-in 10 seconds over current and jamming protection
Integrated electric motor with a micro PCB
Double shock absorption design, completely protect the gears
Auto 90 degree twist when retracted 

Spec.
Working voltage: 4.5~5.5V
Speed: 0.7s/60deg 4.8v - 0.55/60deg 6v
Idle current: 3mA
Angle limit: 90 degree when retracted
Operating temp: -10~50C
Weight: 37g
Shaft size: 3mm
Mounting area size: 35mm x 33mm
Length: 67mm
Not suitable for a plane heavier than 2.5kg


PRODUCT ID: HKD-312

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Weight: 49g
Quantity: 
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stock
10+
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Price  $8.15

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 Customer rated
579
crowns
  
 
Total of 68 discussions.
Stephen  5 points - 6/30/2015
 
are these metal trunion?
 Napstr 1256 points
They have a brass pivot so the pin things are rotating around is metal (which is where you screw bolts or grub screws to hold your legs but they would be considered plastic trunnion as the rest is plastic - my opinion is these are better than metal trunion ones as the screws holding the legs are solidly held by the brass so you get a good hold and they are lighter - I have never seen the actual trunion give way on these as it sits flush with the mounting plate - the mounting plate however is what gets mangled on these and the metal trunion ones.
Nicholas  2 points - 4/8/2015
 
Is there any way of reducing the max angle limit to say 45 degrees?
 Napstr 1256 points
Hi Nicholas - unfortunately there is no way to limit the travel - the units stop when jammed but won't apply a proper lock. To change the travel limit you would have to change the shape of the rotating block and its centre
Vincent  3 points - 9/8/2014
 
Can I controll these with an Arduino?
 NewToHobbyKing 16113 points
Vin anything that can control a SERVO can control this RETRACT. It acts just like a servo. So I am thinking YES!
Minair  10 points - 5/8/2014
 
can I use on the Durafly D.H.100 Vampire
 ATAN #1 75 points
Can be..?
Gadgieboy  34 points - 4/27/2014
 
Does anyone know if these will fit onto a Dynam 550 turbojet?
 TiMiDi16 10 points
u can make them fit probably
Customer Reviews
Overall Rating
Thomas
13 likes
Value
Quality
4 thumbs up!
would like to know if this is a good replacement for the Durafly T-28 Trojan retractable nosegear? The main gear retracts have aluminum blocks that the strut goes into...the nose gear is black plastic...I would like to know if that black piece is in there...mine snapped and the nosegear collapsed...it sits on the strut on a collar and an E clip to hold on!.....thanks for any help!


2 comments. Reply..

Overall Rating
jbc1234567
399 likes
ValueUNRATED
QualityUNRATED
1 thumbs up!
Just installed a set of these on my Starmax 70mm F-5. They look to be perfect for any 70mm EDF & 25 size or 'LIGHT' 40 size prop plane. Specs say upto 2.5kg but I would'nt go above 2kg, a little little less if you fly off grass. The action is smooth, not too quick & overcurrent protection :)
Suit a 3mm strut & uses brass threads where you can screw grub screws to secure the strut. Excellent value for money, I've ordered 3 more for my 70mm F-35.


26 comments. Reply..

Overall Rating
Bebbi
33 likes
ValueUNRATED
QualityUNRATED
1 thumbs up!
The problem is a not enough powerful H-bridge in the control device. My two retracts burned out after about 8 or 10 cycles. I opend them and there was a transistor damaged. After I've replaced it it's working fine again. For Me it's easy to repair it but what are doing other modellers?
I suggest that you have the same problem if you smell a bourned out electronic divice.


7 comments. Reply..

Overall Rating
iosxphone
28 likes
ValueUNRATED
QualityUNRATED
1 thumbs up!
there great but yo have to make a stopper so the 3 mm rod does not jam it up


1 comment. Reply..

Create an account
Overall Rating
Mark in Aus
856 likes
ValueUNRATED
QualityUNRATED
Like it?
smooth travel and nice speed. no problems yet as others have mentioned


2 comments. Reply..

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