Arrow 500
| Company type | Private company |
|---|---|
| Industry | Aircraft engine manufacturing |
| Headquarters | Italy |
| Products | Aircraft engines (Arrow series) |
The Arrow 500 is a horizontally opposed, twin-cylinder, two-stroke aircraft engine featuring either single or dual ignition options. It was engineered by the Italian company Arrow SNC specifically for use in ultralight aircraft.[1][2]
This engine belongs to the Arrow series, which employs a modular architecture sharing pistons, cylinders, and gearboxes across varying crankcase configurations to create one-, two-, or four-cylinder variants.[1] Production of Arrow engines has since ceased.
Development
Weighing approximately 88 lb (40 kg), the 500 model is a traditional twin-cylinder powerplant. It incorporates features such as reed valve induction, free air cooling, and a tuned exhaust system. The fuel delivery is managed by a single slide venturi-type Bing carburetor, accompanied by a fuel pump. Cylinder walls are treated with Nikasil coatings to enhance durability. The ignition system can be configured as single or dual, and the engine includes an optional gearbox reduction drive equipped with a one-way clutch. Starting is facilitated by an electric starter; however, there is no recoil starter option available.[1]
Generating 65 hp (48 kW), the Arrow 500 operates on premium unleaded automotive gasoline and has an advised time between overhaul of 400 hours.[1][2]
The supplied tuned exhaust system has received feedback describing it as "cumbersome," often requiring modifications to fit various aircraft installations.[1]