Arrow 250
Type Two-stroke aircraft engine
National origin Italy
Manufacturer Arrow SNC

The Arrow 250 is a family of single-cylinder, two-stroke, single- or dual-ignition aircraft engines that were designed for ultralight aircraft by Arrow SNC of Italy.[1][2]

The Arrow family of engines are modular in design and share the same pistons, cylinders and gearboxes assembled around different crankcase designs, giving one-, two- or four-cylinder engines.[1] Arrow engines are no longer in production.

Development

The 250 is a conventional single-cylinder engine that weighs only 13 lb (6 kg). The engine features single- or optional dual-ignition, reed valve induction, free air cooling, tuned exhaust system, a slide venturi-type Bing carburetor, fuel pump, Nikasil cylinder coatings. The engine was offered with a gearbox reduction system that included a one-way clutch. Starting is electric starter with no provision for a recoil starter.[1]

The tuned exhaust supplied with the engine has been criticized as "cumbersome" and needing modification to fit most aircraft.[1]

Variants

250
Gasoline aircraft engine, 34 hp (25 kW). Out of production.[1]
270 AC
Gasoline aircraft engine, 35 hp (26 kW) at 6800 rpm, weight 13.2 lb (6.0 kg) with carburetor, alternator, fuel pump and starter. Out of production.[2]

Specifications (Arrow 250)

Data from Cliche[1]

General characteristics

  • Type: Single-cylinder, two-stroke aircraft engine
  • Displacement: 250 cc (15.26 cu in)
  • Dry weight: 13.2 lb (6 kg)

Components

Performance

  • Power output: 34 hp (25 kW)

See also

References

  1. 1 2 3 4 5 6 Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-1 Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4
  2. 1 2 Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 70. BAI Communications. ISBN 0-9636409-4-1
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