3D Robotics

I had a great day today testing MatrixNav 2.0 on the UAV DevBoard, and part of the pleasure (along with the excellent performance of the autopilot) was my new cheap EasyStar substitute, the Dynam Hawk Sky. Basically it's an EasyStar clone, but with ailerons (yay!). Even better it comes in a $110 ready-to-fly kit that includes everything. You get the plane with brushless motor, prop, servos and ESC already installed. You also get an 1800mah 11.1v LiPo battery and AC charger. It even comes with a 4-channel RC radio (FM sadly, and since it's just 4 channels, you'll have to replace it with 5 channel or better RC gear to use an autopilot). It would cost you at least $200 to assemble the same around an EasyStar.

Even better, the motor is plenty powerful enough, so you won't have to replace it the way you do with other Chinese RTF kits, which are often underpowered. Like the EasyStar, the Hawk Sky has loads of interior room in the nose, thanks to the elevator and rudder servos being outside under the wing. Below you can see my setup. The RC receiver is in the back of the cockpit, under where my EM406 GPS module is mounted, and the battery is in front. That leaves loads of room for the UAVDevBoard, and you could easily fit a camera in there too.

How does it fly? Pretty well! It's not quite as inherently stable as the EasyStar, which you would expect with an aileron plane, but otherwise it's quite similar in performance. My only complaint is that the motor, on a plastic pylon, is noisy, since the plastic doesn't dampen vibrations the way the foam-mounted EasyStar's motor does. I may end up trying other props to minimize that. The plane is made of EPO foam, not Elapor like the EasyStar, so perhaps it won't handle crashes quite as well. But at this price, that's not much of a concern. Given that I've got two EasyStars, why am I flying the Hawk Sky? Because having ailerons is MUCH better for autopilots, especially IMU-based ones like the UAVDevBoard. If you've been wanting to get an EasyStar but were put off by the price once you added a brushless motor upgrade, or just wanted to upgrade to a plane with ailerons, the Hawk Sky is very worth considering. It's got all the anytime-anywhere appeal of the EZ, handling any kind of terrain with its hand launches and short belly landings. And because it comes already assembled with everything you need, it's faster to get into the air. Highly recommended! BTW, we've discussed the plane before on DIY Drones here.
E-mail me when people leave their comments –

You need to be a member of diydrones to add comments!

Join diydrones


  • hawk sky dont like over 1000grams of electronics . 

  • Hawk sky is no more available, in that case has anyone tries some other frame which has 4 channel and works without much trouble. Thanks

  • Hello everyone

    New member here but very long time model builder..(since Stick and Tissue and Dope days, etc).                  Just bought 3 Busy Bees, they come complete with 2 x 9g servos (no ailerons) 4ch Tx, 8ch RX, small Brushless motor and pusher prop, ESC, a 1800mah Lipo and 12v charger adapter.. I got each complete set for 100$ as a clearance deal from a local hobby shop so I think it's a very affordable entry base model as a basic UAV trainer with a training cable to an identical Tx. Think I'll add a couple servos for ailerons and maybe a bigger battery to correct that tail heavy tendency as I read about in many forums.. The Transmitters come with a rear jack outlet for a training cable but I can't see any button to enable the twin-Tx training operation. Has any of you guys done that operation? I'd appreciate any info before I start a deep surgical intervention lol..


    Beirut, Lebanon.

  • 3D Robotics
    Yes, it does come with a Tx. But it's only 4 channels, so you can't use it with an autopilot.
  • Does the Hawk Sky come with Tx as well? If not, would I be able to use the 4chan Tx that came with my cheap helicopter (it has removable crystal)?
  • 3D Robotics
    Earl, I usually just include a plane in a larger HobbyKing order. They've got practically everything I need and once you spread the shipping over a lot of batteries, motors, chargers, etc, it makes sense.
  • The price of the planes are good and low BUT you get killed with $41 to $65 shipping on a $59 plane. Don't make sense to me.
  • Developer
    I have the EasyFly, which is a nice cheap motorglider package, but Chris is right in that the cockpit room is very limited. Maybe not the best UAV candidate. Of course with foam you can do a lot of modification without too much effort.
  • Hi Chris !
    I have almost 2killos of brushless motors starting with 750kv to 5000kv and with size starting from small motors of 200gm thrust to upto large mtotors with 3kg thrust.

    I think 1800kv motor should be ok. Which one you are using ?
    Can you paste a link to that ?
  • 3D Robotics
    NS Rana, the BusyBee is a nice, roomy plane (I've had two), but you do need to upgrade the motor for decent performance. The included one is too small and can only handle 7.4v LiPos.
This reply was deleted.