The Horex 644 Osca is a motorcycle that was produced in 1988. Its engine is a four stroke, single cylinder, SOHC, 4 valve per cylinder with a capacity of 644 cc / 39.2 cu-in, which is similar to the Honda Dominator. The bore x stroke is 100 x 82 mm, and the cooling system is air cooled with a compression ratio of 8.7:1. The motorcycle is equipped with a carburetor induction and CDI ignition, and it can be started electrically. Its maximum power is 50 hp / 36 kW at 7000 rpm, and its maximum torque is 57 Nm @ 5500 rpm. The motorcycle has a 5-speed transmission and a chain final drive. Its front suspension is a telescopic fork, while its rear suspension is a swing arm. The front brakes consist of 2 discs, while the rear brake is a single disc. The fuel tank has a capacity of 12 liters/3.1 US gal, and the dry weight of the motorcycle is 138 kg / 304 lbs. The size of its front and rear tires is not provided.
Technical specifications:
Make Model: Horex 644 Osca
| Year | 1988 |
|---|---|
| Engine | Four stroke, single Cylinder, SOHC,, 4 valve per cylinder. (Honda Dominator) |
| Capacity | 644 cc / 39.2 cu-in |
| Bore x Stroke | 100 x 82 mm |
| Cooling System | Air cooled |
| Compression Ratio | 8.7;1 |
| Induction | Carburetor |
| Ignition | CDI |
| Starting | Electric |
| Max Power | 50 hp / 36 kW @ 7000 rpm |
| Max Torque | 57 Nm @ 5500 rpm |
| Transmission / Drive | 5 Speed |
| Final Drive | Chain |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swing arm |
| Front Brakes | 2x discs |
| Rear Brakes | Single disc |
| Front Tyre | NA |
| Rear Tyre | NA |
| Dry Weight | 138 kg / 304 lbs |
| Fuel Capacity | 12 Litres / 3.1 US gal |
