D-Motor LF26

D-Motor LF26
D-Motor LF26
Type Piston aero engine
National origin Belgium
Manufacturer D-Motor

The D-Motor LF26 is a lightweight liquid cooled, four-stroke, flat four, 2.5 litre petrol aircraft engine , produced by D-Motor in Deerlijk, Belgium.[1]

Contents

Design and development

This direct-drive four stroke aero-engine is unusual in having a side-valve valvetrain. The developing engineers determined that since maximum power was to be produced at only 2800 rpm, the weight and complexity of overhead valves would be superfluous. The resulting engine is compact and light at 47 kg (104 lb)[2], with a power-to-weight ratio of 1.28 kW/kg. The engine uses fuel injection, so carburetor heat is unnecessary. Lubrication is dry sump, with an external oil tank. Dual ignition is used, each cylinder having twin spark plugs sited between the valves and the piston crown.

D-Motor are developing a derivative 3.76 litre flat-six engine, with government funding[3]; and this motor is expected to produce 115 hp (86 kW) and to weigh 63 kg (139 lb).

Applications

  • Raj Hamsa X-Air‎[4]

Specifications

General characteristics

  • Type: horizontally opposed flat four
  • Bore: 104mm ( 4.1 in)
  • Stroke: 74 mm (2.91 in)
  • Displacement: 2,512 cm³
  • Length: 611 mm
  • Width: 533 mm
  • Height: 382 mm
  • Dry weight: 47 kg with exhaust, radiator & external oil tank

Components

Performance

See also

Comparable engines
Related lists

References

External links


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