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 Shaft size: 3mm Mounting area size: 35mm x 33mm Length: 67mm Not suitable for a plane heavier than 2.5kg
That would be very difficult to do. Mechanically, the mechanism is designed to lock at 90 degrees, if you only go to 60 degrees it won't lock in position. If this is not a concern, you could put something in the way that would prevent the retract from going past 60 degrees and let the overload circuit cut out when it hits the thing you put in the way. I hope this is helpful, please click on my green "thumbs up" if you found this the be useful.
Wenn du dir die Messinglager anschaust, um die das Fahrwerk aus- und einfä*hrt, dann siehst du Lö*cher im Zentrum der Achse. Da kommt je eine Blechschraube oder Madenschraube rein, die das Fahrwerksbein in der Aufnahme fixiert. Man muss das Fahwerksbein entsprechend abflachen. Bei den Fahrwerken mit Kunststofffü*hrung schneidet dich die Schraube ihr Gewinde selbst.
Check the depth of the wing, choose the correct spot on the wing and check the landing struts length. Make sure You got all the sizes correct before You start cutting the wing. It is only about You to perform the correct setup.
Keep getting questions about these so I'll repost a video I did where I installed these on my F5. These retracts are made by PingZehn and sold through various vendors like Hobbyking. Excellent retracts and now you can even get metal trunnions for them. Fast forward the video to 4mins 15sec to see the retracts. Cheers... http://www.youtube.com/watch?v=iLjLUdN2gm0
better still use the metal trunnion version HK-15094M . you will have to file a flat on the collett on the leg to the wheel to make it fit , but that is very easy to do. this is because the trunnion leg hole is is not centered the same as the plastic stock trunnion.
Anlucas yiasou mate! guys are using motorshafts as they come with grooves machined at one or both ends and usually come with circlips as well. This allows the shaft to spin freely but not fall out. For the other end just grind a flat for the strut and it's grub screw to connect.
I am using a pair of this in PZ P47. Honestly this is not identical in dimension to the eflite retract which fits perfectly into the P47. But with some cutting and trimming of the plastic sockets, the retract fits and works pretty well. Beware the unit would not flush with the underside of the wing unless you trim off more plastics. Mine would not flush and have around 1/4" protruding, but the flight performance didn't show any bad habits, roll and inverted flight are both very stable, not to me
Does anyone know if this is a drop-in replacement for the gear supplied with the Durafly DH Vampire, please? Importantly, does it have the same screw hole centres as the original Vampire retracts. Thanks in advance
Never had a Durafly vampire, but I assume most (if not all) HK brand planes would use this retract or the steerable one (almost same dimension). Heard many stories how stock servoless retract failed or jammed for Airfield planes etc, for me, all but one such retracts I ordered from HK are working perfectly. Good price, too. If you want a thinner retract, www.link It fits thinner wings like jets pretty good. Happy flying!
Any 3mm landing gear leg, or sand down 1/8" piano wire will fit pretty well into the hole. Make sure use file to make two flat spots on where you are going to use set screws (the ones used in most brushless motors) to fasten the leg. This is fairly reliable unit.
I use these struts and just take the small dual wheels off and put bigger wheels on them. www.link look and work GREAT!!! Use either 3mm hardened wire or 1/8 (if you are in the U.S.) and just drill the strut and retarct open a little bit. You will need your own 3mm set screws and filel a flat spot on the wire. That's it! Easy breezy!
Another PRODUCT ID: HK-5094 weighs only 18.8 grams and should be perfect for smaller planes. In my opinion, even lighter planes should be fitted with mechanical retract, like single servo for two main gear. I wish there comes ~12 g servoless retract for mini scale planes.
I can not understand what it means to a statement in the description:
"Car 90 degree twist When retracted" So when the leg of the landing gear is closed the wheel rotates 90 degrees as on a Corsair? Or the wheel remains stationary and the leg of the landing gear is closed normally? or is it something configurable?
I read a review where a customer complained that the leg is not turned on closing, and do not understand how it works. I would like that you do not speed ..
Thank you for everything!
The wheel will rotate 90 degrees if you install the adapters that are sold separately. They are listed in the landing gear section. Also, there is a set of these retracts with the adapters included for around $28, also sold in the landing gear section. I have them on my Parkzone Corsair and they work great.
I have used them on the Monster Mustang ( 5 lbs ) and my modified Parkzone Corsair ( 2.3 lbs ). They have performed great on both. Even with a few hard landings, there has been no broken parts. I highly recommend this product.
You can break then in 1 of 2 ways.
1. if your model is too heavy when you land the trunion can drive the worm gear arm back and it can pop the 'extend' limit switch off the PCB. Then the retract will allow the worm gear arm to travel too far ans the trunion can slip past the arm allowing the gear the collapse as if it retracted.
2. If the worm gear arm travels too far in the extend position the trunion can force its way past the arm and collapse the gear. This will actually s****e plastic off t
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..
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..
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..
1 thumbs up!
there great but yo have to make a stopper so the 3 mm rod does not jam it up