Free Shipping on orders over 99*. Learn More
  $119.99  $89.99
Add to Cart
Add to Wish List
In stock online

The UMX Radian BNF represents the first powered ultra micro sailplane with AS3X® technology.


Image for UMX Radian BNF with AS3X from HorizonHobby
UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X UMX Radian BNF with AS3X
  • Overview
  • Specs
  • Reviews
  • Parts & Accessories
  • Completion Guide
  • Manuals & Support

Key Features

  • 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

Needed To Complete

- 4+ channel DSM2- or DSMX-compatible transmitter

Video Overview


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.

Approximate Assembly Time: Less than 1 Hour
Approximate Flight Time: 8–10 minutes
Charger: 1S 300mA LiPo USB Charger
Completion Level: Bind-N-Fly
Flaps: No
Flying Weight: 1.50 oz (43g)
Motor Size: 8.5mm coreless brushed motor
Recommended Fuel: Electric
Recommended Motor Battery: 1S 3.7V 150mAh 25C LiPo
Wingspan: 28.7 in (730mm)

Parts Listing

In Stock
$13.99  $13.29
In Stock
In Stock
In Stock
In Stock
In Stock
In Stock
$5.49  $3.99
In Stock
$9.99  $8.99
This item is no longer available

Optional Accessories

$69.99  $54.99
In Stock
$195.99  $169.99
In Stock
$724.99  $629.99
In Stock
$6.49  $4.99
In Stock
$23.99  $19.99
In Stock
$49.99  $39.99
In Stock
$18.99  $14.99
In Stock
$68.98  $49.99
In Stock



Product Support Tips

Product Support

Technical questions about this E-flite product should be directed to Horizon Hobby's Product Support Department:

Horizon Hobby, LLC.
ATTN: Product Support

2904 Research Road
Champaign, IL 61822

To place a Horizon Hobby Support Inquiry please visit our Inquiry Form Support Phone:(877) 504-0233
Fax:(217) 355-1552

Sales Support

If you would like to purchase this product, please go to the Store Locator or contact the Horizon Hobby Consumer Sales Department:

Horizon Hobby, LLC.
ATTN: Consumer Sales

2904 Research Road
Champaign, IL 61822
Email: Sales Phone:(800) 338-4639
Fax:(217) 355-1552