HK-250GT Electric Helicopter Kit (Alloy/CF w/ Blades) (USA Warehouse)
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.
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.
I'm using a 3800kv motor on mine with the stock pinion. The motor I am using has a 3mm shaft and i had to drill the pinion to make it work. Access to a drill press is handy. When i set up the transmitter i put the max throttle setting to 85% to ensure i had a safe headspeed so far so good i have abouy a dozen flights on it so far and it's good. Just make sure there is thread locker (blue not red) on the feathering spindle before putting on the main blades. Also check the rest of the heli for snug bolts and it should be fine.
Ok here's the math im wrong in the post above. with a 3900kv motor on a 11.1 battery. 15 tooth pinion and a 120 tooth main gear to keep the headspeed under 4k I should be running the heli with the throttle at a maximum of 74%. In your case with the exact setup but with a 3800kv motor set the max throttle to 76% to keep the headspeed at 4k.
Hi, Does any know what size the pinion gear is that comes with the kit? 2.3 2.5mm??? I am planing on running the p2622 motor in the heli and just wondering if the 15 tooth will even be worth trying to use due to the head speed being at the high end with it as the motor is 3800Kv. Also one more thing has any one used the p2622 in there 250gt? Thank you in advanced for any help.
recent addition to my fleet is the hk250gt. love it, so I bought 2. looking for the lowest profile cyclic servos so I can fit this birdie in a scale fuselage I have. I currently have the hkscm9-5 on the cyclic and the ds65hb on the tail. i'd go all ds65hb, but i'd have to extend the screw holes. any usa warehouse suggestions?
I converted my hk 250 with an align dfc head the kit comes with the new main shaft but i would buy a original align feathering shaft at the same time u have to use the old one glad i did very responsive with my cx3x1000 gyro
I am new to helicopter kits. I know I will need a gyro, servos for the main blade and one for the tail, a battery, and a motor. Specifically which ones? I assume that the receiver that comes with the Turnigy 9x will work with this kit. I wish that a detailed list of necessary parts was included in the kit description for novices like me. Also could a fly artless head be switched out for the one that comes with this kit?
this will do you just fine: cyclic servos HKSCM9-5 Single Chip Digital Servo (5V) 10g / 1.4kg / 0.09s (USA Warehouse* tail servo DS65HB Digital High Speed Servo 6.5g/1.5kg/.07sec (US Warehouse)*
Turnigy 2627 Brushless Outrunner 3800kv (USA Warehouse)* Turnigy AE-20A Brushless ESC (USA Warehouse)* (finally, I got a gy48v gyro somewhere else)
but they drug their heels for over a year and now the newer DFC flybarless version is available from align and it is far superior geometrically with a lower center of gravity, slopless torque tube tail and much more stability.
Now if HK would clone the newer flybarless version
latest and greatest? thats a matter of opinion but i think hobby king does a great job of keeping the toys in our hands for a great price.you need to let the name brand companies get some money first because of the cost of R&D but i think HK is making enuff $ these days they need to get an R&D department together and develope their own not a clone
Just received it yesterday. Arrived in great shape, with no damage or other signs of distress. The box was packed very well. I'm very pleased with the quality and packaging. I did order some spare parts based on other reviews (CF blades, feathering shaft, belts, extra hardware pack, etc.). I plan on building it over the next month as I am on a budget and need to get servos and other items. Will let you know how it goes later.
In general, this is a very nice kit, and I'm pleased with mine. HOWEVER, there were a couple of quality problems with mine, the most noteworthy is that the headblock was drilled completely off center, so no matter what you did the head wobbled excessively. There were 2 or 3 other "defective" parts on mine. I would recommend just buying 2 of these kits, and then you could build 1 very nice heli, and have lots of spares for crashes. You'll still save 50pcnt over the cost of a name brand heli. It's a very nice kit...just realize that you'll have a couple of parts to purchase to get it in the air.
2 comments. Reply..
It looks like a nice kit when you open the box. However, once you start putting it together it becomes obvious that it is below the quality of the HK-500GT. Most of the parts that move need to be replaced with pre-cloned parts, bearings, main/tail/feathering shafts, main head, belt, ball links, and the main gear. The main blades have some sort of glue all over them. Still, not to bad for the price, but might be really frustrating for a beginner.