Piper Cub & 1.20cu.in Gas Engine Combo (2.24m wingspan)
  • Brand: Seagull Models
  • Product Code: SEA74-EVOE20GX2
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  • Availability: Pre-Order
Piper Cub and 20cc Gas Engine Combo
SAVE $76.00

The Piper J-3 Cub was the most popular commercial aircraft of the 1930's.  Barely seven yards long and instantly recognizable in its yellow-and-black paint scheme, this nostalgic favorite became the foremost trainer of the era, eventually training 80% of the United States' military pilots by the end of World War II.  A new Cub was rolling of the assembly line nearly every 20 minutes, and many of these beloved airplanes are still around today. 

Seagull's Piper J-3 Cub ARF captures the classic scale lines and smooth flight performance of the full-scale Cub. Constructed from top-quality balsa and lightweight plywood materials and showing off a vibrant Cub Yellow Ultracote scheme, this scale Cub will provide aviation buffs with hours of sport-flying fun.

Cubs are all easy to fly and quick to assemble thanks to the usual finished, covered and decorated components. You can probably see they are all factory-built to a very high standard with precision laser-cutting and high quality Oracover film as standard. As usual, the pushrods, the motor mounts, hinges, etc are factory-fitted for the fastest assembly time.

Of course, included too are comprehensive fittings kits, pre-painted L/W glass cloth cowls, aluminium wing struts, undercarriage, tail wheel assembly and fully illustrated instruction manuals.

20GX2 1.20cu.in Gas Engine
Since the release of the Evolution® 10GX small-block engine, countless modelers have discovered the benefits of gas power in aircraft formerly dominated by the .40-size glow engines. But what about the pilots who enjoy even larger airplanes in the .91- to 1.20-size range?

Bring the fuel efficiency and easy operation of a gas engine to your sport flying experience with the Evolution 20GX engine. Its new pumped carburetor makes fuel flow uniform and consistent regardless of fuel tank location and makes needle valve adjustment easier. It’s been designed with a standard beam mount and dimensions that allow it to fit anywhere you might use a .91- to 1.20-size glow engine. The 20GX will breathe new life into models designed for glow power. It’s also remarkably lightweight, even with the ignition system and battery. But what sets the 20GX apart from its nitro-fueled counterparts is its phenomenal fuel efficiency. It takes only 30% of the gas/petrol to run the 20GX the same amount of time it would to run a comparably sized glow engine. That’s an amazing efficiency level that results in a cost per flight difference of 90% on average to you.

All of the Evolution brand gas engines are designed from the start to provide you with excellent performance at a fraction of your previous operating costs. We have painstakingly designed each engine to insure a hassle free experience without giving away anything in expected performance or durability.


  • Pumped-carburetor for greater reliability and ease of installation
  • Reliable fuel system-easy to tune and efficient
  • Outstanding power and performance for demanding RC pilots
  • Lightweight construction based on the Evolution® 1.20NX glow engine
  • Standard .91 size beam mount allows for traditional mounting
  • Gasoline fuel delivers low operational cost and simplicity
  • Outstanding power and performance for demanding RC pilots
  • 2S Li-Po battery compatible ignition without a regulator provides long run times
  • Lightweight electronic ignition provides easy starts and superior reliability
  • Single prop nut attachment convenience
  • In-cowl muffler included
  • Supplied with fuel tubing and filters that handle gasoline and the high operating temperatures of a gasoline engine


Engine Size (Glow): 1.20cu.in 4-Stroke
Kit, ARTF or RTF: Almost Ready To Fly
Length: 56.2" (142.7cm)
Radio Required: 4 Channel at least
Servos Required: 6
Weight: 10.8lbs (4.9Kg)
Wing Area: 1137.1"2 (73.4dm2)
Wingspan: 88.2" (224cm)
Benchmark Prop: APC 16x6, APC 16x6
Bore: 1.20 in (30.5mm)
Carb Type: Evolution Pumped, Evolution Pumped
Crankshaft Threads: 5/16 - 24, 5/16 - 24
Crankshaft Type: Threaded
Cylinder Type: Ringed/Steel Liner
Cylinders: Single
Displacement: 1.20 cu. in. (20.00 cc)
Engine (Only) Weight: 25.2 oz (714 g), 25.2 oz (714 g)
Ignition Weight: 3.5 oz (99 g), 3.5 oz (99 g)
Muffler Threads: 4mm Screws
Muffler Type: Inverted Wraparound
Muffler Weight: 5.2 oz (148 g)
Oil Type & Content: 20:1 synthetic
Plug Type: 1/4 - 32
Prop Range: 15x6 to 17x8
Recommended Fuel: 87-91 octane gasoline (petrol)
Stroke: 1.10 in (27.9mm)
Total Weight: 33.9 oz (961 g), 33.9 oz (961 g)