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
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
Shaft size: 5mm Mounting area size: 44mm x 41mm Length: 74mm Not suitable for a plane heavier than 4.7kg
I have these in two different aircraft - one an electric the other one. Is glow powered. After a very short time (4 or 5 flights on each aircraft) one retract on each model stopped working after going intermittent for a while ( I had to cycle the switch a few times before they worked) then they gave up the ghost. On one of them the motor was very hot. They had free movement there was nothing restricting them or causing them stick up or down. Any comments.?
in these type of landing gear is very important shim well the seat .. so that the four screws are tightened equal. on the landing that stops trying to loosen the screws slightly and see if it picks up the movement. . if so you have to shim under the re
ok, yes, it was only a test, I used 6 of these retractable, 1 installed on my at6 Texan model phoenix, and was stopped after about 6-7 flights. I disassemble the retrattile, but I did not find anything wrong .. I do not know the cause. replaced, and after more than a year is ok. these are, however, retractable economics , but the value for money is exceptional.
When i installed these units,,i realized there are no provision to lock the struts to the unit..I looked all over for set screws or location of set set screw( grub screw).....Yet on some of the reviews here,,,mentions are made to lack of set screws,,obviously the location for the screws are there,,while my units have blank wall on each side,,,,,,absolutely no way to lock the strut in or even prevent it from just sliping out,,,,,
Has anyone else have that same problem
These units (as do all of the servoless units I have found) use a screw in the centre of the bearing to lock the gear shaft into the unit. You should see the centre of the pivot has a small hole (usually 3mm threaded) which you insert a 3mm screw and lock the gear shaft with - to do this it is better (more secure) if you file a flat on the leg at the centre pivot area and thread lock the screw into the unit (use low strength removeable threadlock as you may want to remove the leg in future).
I made the legs from 3.8mm (5/32in) wire, with a shock absorbing coil, then soldered a short 5mm brass tube sleeve over the wire where it enters trunnion. I also filed a flat for the grub screw as suggested elsewhere. That works fine.
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.
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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
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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
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1 thumbs up!
Main Body Width=21mm Height=25mm (loading plate is additional 3mm) Length=74mm 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.