The HK-250GT is a high performance factory-upgraded heli kit. With it's true carbon fiber frame, hard alloy head and tail plus numerous upgrade components, the HK-250GT is sure to be a favourite amoungst micro 3D pilots.Features.Newly designed main rotor head set produced from billet alloy.
Newly designed metal control lever and CCPM metal swashplate for improved 3D performance.
New anti-rotation guide, with its strengthened frame base enhances the structural strength of the main frame.
Single unit tail belt makes it easier to assemble and improving rudder efficiency.Specification:Length: 430mmHeight: 187mmMain blade length: 205mmMain rotor diameter: 450mmTail rotor diameter: 108mmMotor pinion gear: 15TMain drive gear: 120TTail drive gear: 28TDrive gear ratio: 1:8:4.28Weight(without power system): 138gFlying weight: Approx 330gRequired items.
Brushless Outrunner Motor
Lipoly Battery (800mAh 3S)
Note: Canopy color may vary
Good quality just for the price. There are some problems on the shaft bearing because when spinning the shaft bends. The screws are torx type, not my favourite but..
Better to give it a good check and give the screws a bit of threadlock.Super little heli, mostly easy to build. Quality could be better in terms of the screws used. Some of them have spots of corrosion and their heads are not ok. Good thing is that the screws mostly have torque, however I replayed quite a few of them. I would prefer that in the pre assembly no bolt adhesive would be used at all. Some screws are secured, other not, there is always the risk that a well secured screw is hard to get of even if that was not necessary. Since I found totally none secured screws, I have to take it all apart anyway and rebuild it to be on the safe side.Quality - 3 star but because relatively inexpensive I gove it 4 stars in value and overall rating. The main shaft arrived with a slight bent - so right away an extra expense in cash and time to havre to replace it. The feather shaft is made of very soft metal. You don't have to crash to bend it. A rough touchdown on concrete (too sudden negative pitch to sit it down for example) will bent the feather shaft. Okay, my fault for the rough touchdown but I own Align and CopterX 250 helis and the feather shaft on those helis don't bend with such a small force. All the frame screws should be removed and installed with locktite as they will vibrate loose if left in stock condition. Tail has extreme slop as already mentioned by others. But if you want to tinker more than fly a crispy machine then this is for you. I built mine with HXT 900 cyclic and hobbyking tail servo, 2627 Turnigy, Hobbyking gyro, YEP 18 amp ESC, entire heli to build cost less than $100 - okay valueImpecable. Un clon del TREX250 con la mejor calidad. Terminacion de Primera. La nica critica con las palas. Las mismas deben ser remplazadas por unas de fibra las que trae son de un plstico muy ordinario. ni si quiera voy a intentar volarlo con esas. Esperare hasta que me lleguen las de fibra.Bought two of these a few months ago when they were less than $40. The second one was to be the crash kit. During the build, stripped out screw heads and broke off one screw in the tail boom holder. I ordered Align parts to replace that. The aluminum boom is very soft and gets damaged at the boom bolder when you tighten down the screws it already causes metal fatigue. With time and rough landings, you will notice the boom vibrate more and more. In hindsight, I would have built fromt the start with a CF boom because during flight the boom suddenly snap at the boom holder. Price is good value but you have to spend more (get quality hardware) to make this airworthy.This thing is badass, its instruction-free assembly, me being a first time collective pitch helicopter pilot, was manageable. MAKE SURE YOU PUT THREAD LOCKER ON EVERY SINGLE SCREW THAT GOES INTO METAL!! I've had two accidents that could have rooted from this problem, one in the main head, and one in the tail rotor.The parts are relatively cheap to replace, but just to save the time and money. Overall, some of the parts are fragile, and this is definitely not the heli, for a first time pilot, but its a great entry-level helicopter for somebody who's flown fixed pitch or coaxial.Hi everyone this is a great helicopter for an evening build. Put a fbl head on it and a beastx that im not happy with so i am swapping for a gpro. BUY IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Overall I would definitely recommend it. Everything fits true and straight. I only have two complaints.
1 The canopy is very poor quality, and was cracked when i received it.
2 The tail slider is larger than the tail shaft, so it has quite a bit of slop in it.
Other than that, everything is good quality.
The parts used are:
Assault 250 3800kv motor 15t pinion.
HK15178B 13g servos
Zippy Compact 850mah 3S batteries
30A ESCThis kit is really cheap but there are several issues that you have to be aware.
1. Mine came with a problem on the tail drive gear. The gear that connects with the main gear was not perpendicular to the shaft and i had to 'adjust' it with pliers. I replaced it with the Align just to be safe since HK did not have them in stock at the time.
2. The whole head has too much play. This is caused by the swashplate being too loose, the seesaw, and the ball links. I tried tightening them but the tolerances on these parts are too much so i had them replaced with the Align originals. This made the heli to respond and fly much better.
3.There are two problems with the tail. Again there is a problem with the parts tolerances and the tail blades feel loose. Also the tail pitch control links are too short and you cannot get enough angle on the blades when moving away from the heli. Combine the short links with the poor tolerances and you get very little control of the tail. Again i replaced the tail pitch assembly and the tail rotor control arm with the Align originals.
So here is the list of parts i have replaced which in total cost ~60 euro
H25016 CCPM Metal Swashplate
H25021 Tail Pitch Assembly
H25055 Stainless Steel Linkage Ball
H25056 Ball Link A-B
H25063 Tail Drive Gear Mount Set
H25079 Metal Tail Drive Gear Assembly
H25092 Metal Tail Rotor Control Arm Set
H25007 Metal Flybar SeesawI got today. Perfect model with excellent finish construction. More impressions after the first flight. Thanks HOBBYKING.
380351973X94572X50.jpg download now [40kb] New blades HK-250 download now [656kb] my hk250gt setup download now [781kb] HK250GT setup download now [834kb] Photo package download now [2244kb] HK-250 ESC placement download now [2618kb] Î—Îš-250 GT All inside placement download now [2721kb] mi mini housefly download now [2423kb] T-Rex_250 ger download now [7108kb] 250 Build Guide download now [9540kb] HK250GT FBL - Build and setup 2.0 download now [946kb]