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E-flite UMX J-3 Cub BNF Basic 660mm (26") Wingspan - BNF

Brand: E-flite /
Regular price 129.99 $12999 Free Shipping*
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26" Wingspan E-flite UMX J-3 Cub BNF Basic - Bind-N-Fly (BNF) - EFLU3450

Wings of Lock Haven Yellow

Motion RC carries quite a few J-3 Cubs and for good reason. The J-3 Cub is said to be the best-flying light airplane ever made. Designed in 1937 to be affordable and forgiving in the air, thousands were produced in Lock Haven, Pennsylvania and helped countless aviators realize the dream of flight. Today, lucky pilots scramble at the chance to fly a J-3 Cub so they can experience what it's like to be in perfect harmony with air and machine. The E-flite UMX™ J-3 Cub is an ultra micro-size tribute to the gold-colored airplane and an upgrade for veteran pilots.

Lightly constructed, this model of the everlasting classic features an authentic outline and molded surface detail. Up front is a 2S brushless outrunner power system that allows you to cruise the park at what seems like a walking pace, or punch the throttle to the stops and master basic aerobatics. But the feature that will help you enjoy flying this Cub even more is AS3X technology. That's because the AS3X system built into the ultra-micro 6-channel receiver has been finely tuned so you feel as if you're at the controls of giant scale J-3 that's been expertly trimmed right out of the box. Molded hard points in the belly make the installation of an optional float set simple. So whether your fancy is doing touch-n-goes all day, or just cruising around, this fully assembled charm-machine gives you everything that's great about the J-3 Cub and more.

AS3X Technology

The advanced AS3X (Artificial Stabilization – 3-aXis) system built into the Spektrum™ 6-channel ultra micro receiver is what helps give the E-flite UMX™ J-3 Cub an incredibly smooth feel in the air. It's technology that combines 3-axis sensing with exclusively tuned flight control software to help counter the effects of wind and turbulence behind the scenes. As a result, your workload to fly smoothly is significantly reduced so you can enjoy natural feeling control that's precise. It's an impressive flight experience that will have you feeling like you're at the controls of an expertly-tuned scale model that's much larger.

Brushless Power

The 180BL brushless outrunner motor installed spins a two-blade propeller to provide outstanding thrust and throttle response for slow flight and basic aerobatics.

Scale Detail

Authentic factory applied graphics complement the Lock Haven Yellow painted finish while the wing struts and exposed engine deliver an unmistakable sense of realism.

Optional floats

Turn your local pond into the neighborhood RC sea port. Just add the E-flite float set (EFLUA1190) which mounts to the hard-points already built into the fuselage.


  • Scale markings, engine and surface detail
  • Brushless BL180, 2500Kv outrunner motor
  • Advanced AS3X technology delivers smooth flight
  • Fits a 180–280mAh 2S 7.4V 30C Li-Po battery (sold separately)
  • Industry-leading Spektrum DSMX 2.4GHz technology
  • Ultra micro linear long-throw servos (installed)
  • Fully assembled with no building required


  • 26" E-flite UMX J-3 Cub BNF Basic - (BNF)


  • 4 Channel Spektrum Compatible Radio - Select a minimum 4 channel Spektrum compatible radio from our Radio Collection
  • 2 Cell 7.4V 200mAh or 280mAh LiPo battery - Click Here or or Here for recommendations
  • 2 Cell LiPo battery charger such as EFLUC1007 or EFLC1105 OR cable EFLA700UM with any charger which uses standard banana connector charge cables


  • E-flite float set which mounts to the hard-points already built into the fuselage - EFLUA1190

Product Specifications:

AGE LEVEL : 14 and up
SKILL LEVEL : Intermediate
BUILD TIME : 30 Minutes


26.4in / 670mm


16.9in / 430mm

Flying Weight


CG (Center of Gravity)36mm at the leading edge of the wing at the root

Power System

180 UM Brushless 2500Kv (installed)

Electronic Speed Control

N/A (installed)

Propeller / EDF

5.75 x 2.5 propeller


Ultra micro linear long-throw servos (installed)

Landing GearFixed

Required Battery

2 Cell 7.4V 280mAh LiPo (required)

Required Radio

Minimum 4 Channel DSM2 full range Radio (required)









Hinge Type


Skill LevelIntermediate
Build Time30 Minutes
Recommended EnvironmentIndoor/Outdoor

Product Videos

Product Questions & Answers

NOTE: Questions submitted on this page are answered by customers who have previously purchased this item. If you have a support related question that requires immediate assistance, please visit our Help Center.

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Product Manuals:


If you need any additional assistance, please visit the Motion RC Help Center

Product Reviews

Customer Reviews

Based on 11 reviews
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James L.
United States

Excellent, Easy Flyer.

Wow is this a fun and easy little plane to fly. Great beginner plane if you don't want "SAFE"

Stephen F.
United States
  • How would you rate the overall quality of the product? Very LowLowOkayGoodVery Good
  • How would you rate the value of the product for the money? Very LowLowOkayGoodVery Good
  • How difficult or easy is the product to assemble, use, or operate? Very DifficultDifficultAverageEasyVery Easy
  • How well does the product perform / function? Very WeakWeakOkayGoodVery Good

E-Flite UMX J-3 Cub

arrived in great shape and no problems so far

Scott H.

J-3 cub

Great plane set it up for Fpv


not good recievers

fly's well but the servos stick the worst deigned receiver i eve seen if you want to have fun for a week or so buy now

Lowan G.

Best Little Cub Ever

This airplane has become my very favorite. I have also received many compliments on how well it flies and looks.

A Motion RC Customer
Joe L.

A gem of a J3

Just came in from the maiden flight, several take-offs and landings, flying around trees, etc. I'm more than satisfied. I can't always get out to the field with my bigger airplanes and wanted something to fly around my home that was more challenging than my well-worn Champ. Relatively slow-fly capable, but responsive and plenty of power to get out of trouble. Using the E-flite 200mah lipos, I wish they would use the JST connectors on this (and the 280 mah batteries), but it is what it is and they are good batteries. This airplane is exactly what I was hoping it would be. Thanks to Motion RC for the fine product and quick shipping. - Joe

James D.

j3 cub

stable plane on windy days, flies well with floats.


Very easy to fly, with typical cub flight characteristics.

This is a great plane. It can do loops easily. I wouldn't use this plane for learning inverted flight or rolls. This is a good float fly plane, and a nice plane to learn on. Of 40+ planes, this is the only one I haven't crashed.

Tony s.

E-flite UMX Cub

Finally a Cub that I like flying. Most models of Cubs fly just like the real ones, lots pf rudder to over come adverse yaw. This one because of the differential aileron throw doesn't need it making it much more relaxing to fly. Though relaxing for someone with experience, I would not call this a beginers plane.