Total Price

$0.00

Cart 0 Cart 0 Loading...

Digital Servoless Retractable System (1pc) 37g

Generating Links

Digital Servoless Retractable System (1pc) 37g

Price:

Now save save $0.00 $0.00

$8.83
QTY:
Shipped From:
  • USA
  • Global
  • EU
Already Purchased
Status:
In Stock
SKU:
HKD-312
want FREE shipping? Click here to find out more!
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
Upload video

Only registered users can upload video. Please, log in or register

Topics
Sort by
Most Recent Topics
* Nickname:

* Your Reply:


Please, enter the text shown in the image into the field below
*Verification Code:
Cancel
Submit
Post a new Topic
* Nickname:

* Your Topic:



Please, enter the text shown in the image into the field below
*Verification Code:
Post Topic

Only registered users can write reviews. Please, sign in or sign up

Jiri | Verified Buyer

  • Quality
  • Overall
  • Value

skvělý podvozek

Apr 12, 2022

osvěčené podvozky pro malé jety

Marco | Verified Buyer

  • Quality
  • Overall
  • Value

Buon prodotto

Nov 12, 2021

Prodotto buono a costo basso. Montato su aereo apertura alare m1,4 peso kg 1,6 ,assorbe bene gli urti funziona bene . Io ho allargato il foro della gamba da 3mm a3,5mm

Robbiejohn | Verified Buyer

  • Quality
  • Overall
  • Value

Good unit

Aug 22, 2021

My first experience with retracts, and am impressed with the quality of this unit. Have had over 20 flights, with no problems.
My only issue would be the short lead.

John | Verified Buyer

  • Quality
  • Overall
  • Value

sistema retrátil Servoless Digital

Oct 04, 2020

Works fine.

Geoff | Verified Buyer

  • Quality
  • Overall
  • Value

Undercarriage

Aug 19, 2020

I purchased 2 digital undercarriage units from hobby king to replace both on my E-Flight spitfire. The fit was perfect, I didn’t need to adjust or alter anything and so far they have worked perfectly.

Nono | Verified Buyer

  • Overall
  • Value
  • Quality

bon Train rentrant

Jun 24, 2019

Un bon train rentrant dommage qu'il n(y ai pas des BTR pour bloquer la CAP de 3mm.

Doug | Verified Buyer

  • Value
  • Quality
  • Overall

Same Dimensions Different P/N

Jan 12, 2017

Today I received my servoless retracts from USA(W) warehouse, and I was surprised that instead of P/N HKD-312 I received P/N HK-15090. They appear to be identical and comparing them dimensionally to the illustrations that have been uploaded to "Files" that they are the same. I had a chat with Product Support who were very helpful and patient as I explained my puzzlement. I suspect that soon there may be a new P/N entered into the on-line catalog with the appropriate product description...but in the meantime, I plan to install these retracts into the Hobby King DC-3/C-47 Kit I bought a few weeks ago! They fit perfectly!

| Verified Buyer

  • Quality
  • Value
  • Overall

Certified Buyer Rated

Aug 01, 2016

I have put a pair of these in my Focke-Wulf FW 190D 1550mm span ARF plane. Needed a little bit of adaption of the wheel well but seem to work well. Quite tough for plastic retracts.

bruteforce | Verified Buyer

  • Quality
  • Value
  • Overall

Customer Rated

Jul 22, 2016

Astounding value for money! I use these on a 550 size Bell222 and a 600 size Airwolf. general fitment is great, no fiddling with servos and links that need to be exactly right. Fit & forget. Nice slow action and sturdy construction. Remark: Only use them on 4,8V or they may fry themselves.

Soomin | Verified Buyer

  • Quality
  • Value
  • Overall

Certified Buyer Rated

Jul 04, 2016

Good Item. But I can not find still wire for this item in Hobby King. I just buy japan shop OK model parts. It's perfect fit with this item.

Customer files
PZ_P47_HK_Retract_Install Download [783]
No File Name Download [427]
No File Name Download [224]
No File Name Download [435]
No File Name Download [950]
No File Name Download [351]
No File Name Download [954]
No File Name Download [954]
No File Name Download [427]
No File Name Download [224]
  1. 1
  2. 2
Upload your file

Only registered users can upload files.
Please log in or register to start helping your fellow hobbyists today!