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


Digital Servoless Retractable system (1pc) 54g

Digital Servoless Retractable system (1pc) 54g

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.

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 

Working voltage: 4.8~6V
Speed: .08s/60deg 4.8v - 0.6s/60deg 6v
Angle limit: 90 degree when retracted
Operating temp: -10~50C
Dimensions: 73.5x44x28mm
Weight: 54g
Shaft size: 5mm
Mounting area size: 44mm x 41mm
Length: 74mm
Not suitable for a plane heavier than 4.7kg


Shipped from:
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 Customer rated
Total of 105 discussions.
samsman  60 points - 1/16/2016
That reverse mounting plate has 4 countersunk mounting holes on the WRONG side!!! It is not a stupid engineering but a stupid mold designer and the whole f****ing team!!!
 Christ 823 points
hello SamSman not sure to understand what you mean. mine is correct. can you post a picture on the file tabs? enjoy flying
Sagar  2 points - 4/8/2015
Is there any way of reducing the max angle limit to say 45 degrees?
 Christ 823 points
hello Nicholas yes it is possible and even easy but you need to work a bit. you should open the device and you will find a switch at both extremity. and some legth so that the switch is closed at your desired angle. Hope this help. Enjoiy
Nicolas  1 points - 2/26/2015
walk to a plane .40 glow ??
 Christ 823 points
Hello Nicolas yes they are perfect for a plane in the 2 to 3 kg weight. A trick is to add a tie wrap on the mechanism befoer installing so that the cover will not be able to deform on a bad landing. Enjoy flying
stefano  3 points - 2/17/2015
which of these is suitable for the fuselage of the b-25?
 Christ 823 points
hello Stefano, which size of plane? is 1 question* the 2nd is to remember that they are moving only 90 degrees, so not really easy to accomodate in a B25. Enjoy flying
 mikicad67 26 points
YES , B-25
Helder  2 points - 1/20/2015
bought one of these just because i wanted auto-twist feature when retracted for my F4U-1D. Well it seems HK has mislead customers who search this particular feature because this there is no AUTO TWIST FETURE or anyway to enable it. Very disapoiting.
Customer Reviews
Review Blogs for this item
Servoless Retractable system
Overall Rating
4 thumbs up!
These are quite nice. Case is quite hard (for plastic), it should be able to withstand landings with planes around 4 kg. But, it does not come (at least mine did not) with 90 degree twist mechanism, neither it twists by itself. Quite a disappointment for me and my .40 Corsair. As a modeler I'am able to make my own mechanism, but they simply don't keep what they promise in description. 4 stars because of it.

8 comments. Reply..

Overall Rating
1 thumbs up!
good produckt to bad u do not sel the legs for it
the are 5 mm and hard to get so have to make them
your selfs

5 comments. Reply..

Overall Rating
1 thumbs up!
Type your review here.
Try to include as much data as possible.Unfortunatly only four stars. units work perfectly, no problems. However no grub screws to hold landing gear included in the package, I have to wait to install the gear until I can obtain grub screws. ( no good going to the local hardware store). Should be made clear in the specs Etc. that these are not included, better still include them in the package and charge a little more. If anyone is interested, I have two units, one coupled thro a servo speed controller, does not control the speed but delays the action of one unit. One unit almost retracted before the othe starts to move, very scale on Hurricane & Spitfire

2 comments. Reply..

Overall Rating
1 thumbs up!
Main Body
Height=25mm (loading plate is additional 3mm)
loading plate hole pattern=36mm wide x 33mm long (4 3mm holes retangle spacing)
the main body has a short hump for two of the load plate/main body attachment screws. the brass pivot for the landing gear leg block/holder is threaded m2.5 for 1 or 2 set screws for securing the landing gear leg, wire or carbon rod. The hole in the block for the leg is 5mm. Transit is 90 degrees / less with slack from wear allowance, and with locational clearance fits, and movement allowance fits. It is fairly precise, not less than 89 degrees when new. I suspect, as with all model accessories, the transit will come into 87 to 88 degrees after some wear.

2 comments. Reply..

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Overall Rating
1 thumbs up!
These new servoless retracts are pretty good. Having an issue with the set screws not holding the struts in place. That is with both set screws in place.

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