Key Features

• More power and less weight than the 35GT2
• Easy-to-use spring-loaded choke greatly simplifies the start up
• Electronic ignition works with 2-cell 7.4V non-regulated Li-Po packs
• Swings a 2-blade Mejzlik 20x8 prop at 7700 rpm

Overview

If you enjoy flying large 1.80- to 2.20-sized sport and scale airplanes,  Evolution’s 40GX is the perfect powerhouse. The 40cc gas engine includes an advanced electronic ignition system that is compatible with 2-cell 7.4V Li-Po battery packs. It uses relatively little fuel and features an innovative spring-loaded choke design.

This purpose-built engine brings the clean and economical operation of gas to any 1.20- or 1.80-size sport or scale airplane.

The Evolution 40GX is part of Evolution’s outstanding line of gasoline powerplants. Every Evolution engine is purpose-built for model airplanes. Superior porting technology, Walbro carburetors, ball bearing-supported crankshafts and modern electronic ignition systems are all hallmarks of the line. As with all Evolution engines, the 40GX engine is backed by Horizon Hobby’s unmatched customer service and quality assurance.

Specs

• Type:2-stroke gasoline engine
• Displacement:2.4 cu in (40cc)
• Bore:38.0mm (1.5 in)
• Stroke:35.0mm (1.38 in)
• Cylinders:Single
• Engine (Only) Weight:1451 g (51.2 oz)
• Crankshaft Threads:M10 x 1mm
• Prop Range:20 x 8 to 22 x 10
• RPM Range:1,500 to 9,500
• Fuel:Gasoline w/oil mix 40:1
• Mounting Dimensions:182 x 84 x 118mm
• Cylinder Type:Ring
• Carb Type:Walbro 2-needle
• Crank Type:Ball bearing