E-flite Ultra Micro Radian BNF Sailplane (730mm)

E-flite Ultra Micro Radian BNF Sailplane (730mm)
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This is the E-flite Ultra Micro Radian Bind-N-Fly Sailplane. The E-flite® UMX™ Radian is a powered sailplane that packs all the simple fun of the larger ParkZone® Radian into a much smaller package that’s an absolute delight to fly. AS3X® technology gives a pilot the feeling of flying a much larger glider especially outdoors because of its renowned ability to smooth out the effects of wind and turbulence. Its distinctively curved wing delivers outstanding lift and impressive glide ratio using 3-channel control simplicity. The lightweight brushed power system requires just a single-cell Li-Po battery to provide excellent launch performance and long flight times. Plus the one-piece wing can be easily removed and stored in the handle-equipped box making your ability to soar through the clouds as convenient as can be. You’ll be in the air in no time thanks to great features like:
  • Folding Propeller: For maximum glide efficiency, the ESC is specially programmed to work with the folding propeller so it opens quickly and folds back to streamline the airframe.
  • Removable Wing: With the removal of just two screws the fuselage and wing can be separated for easy transport and storage within the custom packaging provided.
  • Long Flight Times: The included E-flite 150mAh 3.7V 1S 25C Li-Po battery can be charged with the provided charger from any convenient USB power source. Average flight times of 10 minutes or more can be easily achieved on a single charge.
  • AS3X System Equipped: The specifically tuned AS3X System in the UMX Radian® ultra micro motor glider is designed to work behind the scenes to provide instantaneous attitude corrections when turbulence, torque and tip stalls haphazardly interrupt the way you want to fly. Moreover, the aircraft flies incredibly smooth while providing you with control that feels natural and utterly accurate. The result is the feeling of flying a much larger, well tuned sailplane that’s convenient enough to fly just about anywhere.
  • Lightweight, molded-foam construction
  • AS3X® System provides outstanding stability and smoother flight
  • 3-channel control for easy-flying and friendly soaring characteristics
  • Contoured spinner with folding propeller (installed)
  • One-piece, removable wing with carbon fiber support
  • E-flite® 8.5mm x 23mm coreless brushed/geared (installed)
  • Spektrum™ DSM2®/DSMX® 5-Ch UM AS3X Receiver/Servos/ESC unit (installed)
  • E-flite 1S 3.7V 150mAh 25C Li-Po battery (included)
  • E-flite USB Li-Po charger, 300mA (included)
  • Included 1S Li-Po battery provides long flight times on a single charge
  • Ideal for outdoors and larger indoor flying sites
Wingspan: 28.7 in (730mm)
Overall Length: 16.5 in (418mm)
Flying Weight: 1.50 oz (43 g)
Motor Size: 8.5mm coreless brushed motor
Radio: 4+ channel transmitter required
CG (Center of Gravity): 1.22 in (31mm) back from the leading edge of wing at wing root
Recommended Motor Battery: 1S 3.7V 150mAh 45C LiPo
Flaps: No
Charger: 1S 300mA LiPo USB Charger
Is Assembly Required: Yes
Plane Type: Sailplane
Experience Level: Intermediate
Power Plant Size: Micro Electric
Recommended Environment: Indoor/Outdoor
Fuel Type: Electric

Needed To Complete:
  • 4+ channel DSM2- or DSMX-compatible transmitter

This product was added to our catalog on April 8, 2014

Verified Owner
Wednesday, Jul 1 2020 (4 months ago)
E-flite Ultra Micro Radian BNF Sailplane (730mm)
This is a very lightweight glider - only 48g! It flies nice and slow (stall speed is ~5mph), so is great for small spaces. The AS3X gyro-stabilization makes it far less twitchy than you’d expect - making it easy to fly in bumpy air (where the thermals are).

The low density makes it stay up almost indefinitely in any sunlight or ridge lift, just like the birds do. The tiny 1S battery gives several launches on a charge, and gives maybe 1 hour of flight time if you use the motor very sparingly.

With only rudder and elevator, it can be challenging to bring this glider back down to earth again! For that reason I wouldn’t recommend flying it in winds over about 5mph. Otherwise landing it involves a spiral dive into a tree :-). Great fun all round!
Verified Owner
Wednesday, May 6 2020 (6 months ago)
E-flite Ultra Micro Radian BNF Sailplane (730mm)
This is a very simple plane to fly. Lots of fun. I don’t have to leave home to find a field to fly it. I’m use to the full size Radian which require a long approach to land. This ultra is a easy quick landing.only complaint I have is trying to find the screw mount to secure the wing. I had to remove the top fuselage to set the screws. I finally just used clear packing tape to affix the wing. Other than that I love this little guy.
Wednesday, Jul 17 2019 (about a year ago)
E-flite Ultra Micro Radian BNF Sailplane (730mm)
This has been my most successful flyer. 14 flights and no crashes. I have lown it of 2 different cliffs and in 10 to 20 MPH headwinds. I had a peregrine falcon come down to check it out. Livetime experience!
Thursday, Mar 8 2018 (about 2 years ago)
E-flite Ultra Micro Radian BNF Sailplane (730mm)
Great flying airplane, soars well. The airplane is lightweight, so a breeze will overwhelm it, but in calm air it's very nice. Some of the hand launches resulted in the battery hanging out during flight, so it would be nice if E-flite would just put a battery clip in.