MTH R 422-CG

The MTH R 422-CG is an Austrian aircraft engine, designed and produced by MTH Engines of Mattsee for use in ultralight aircraft.^[1]

MTH R 422-CG
Type	Aircraft engine
National origin	Austria
Manufacturer	MTH Engines

Design and development

The engine is a twin-cylinder two-stroke, in-line, 1,339 cc (81.7 cu in) displacement, liquid-cooled, gasoline engine design, with a toothed mechanical gearbox reduction drive with a reduction ratio of 3.0:1. It employs dual electronic ignition systems and produces 105 hp (78 kW) at 6500 rpm, with a compression ratio of 12:1.^[1]

Specifications (R 422-CG)

Data from Tacke^[1]

General characteristics

• Type: Twin cylinder, two stroke aircraft engine
• Bore: 99 mm (3.9 in)
• Stroke: 87 mm (3.4 in)
• Displacement: 1,339 cc (81.7 cu in)
• Dry weight: 42 kg (92.6 lb)

Components

• Fuel type: gasoline
• Cooling system: liquid
• Reduction gear: toothed mechanical gearbox

Performance

• Power output: 105 hp (78 kW)

See also

Related lists

• List of aircraft engines