Derbi Dirt Boy: history, specs, pictures
| Derbi Dirt Boy | |
| Manufacturer | |
|---|---|
| Also called | Dirt Boy10, Dirt Boy 10, Dirt Boy50, Dirt Boy 50 |
| Production | 2006 - 2009 |
| Engine | single cylinder, four-stroke |
| Bore / Stroke | 39.0mm x 41.8mm |
| Horsepower | 4.56 HP (3.4 KW) @ 8500RPM |
| Fuel System | carburetor. 14 mm |
| Ignition | cdi |
| Transmission | Gear box: 1-speed Final Drive: belt |
| Suspension | Front: hydraulic fork. Rear: monoshock. |
| Brakes | Front: single disc Rear: expanding brake (drum brake) |
| Front Tire | 2.50-12 |
| Rear Tire | 2.75-10 |
| Wheelbase | 35.63 inches (905 mm) |
| Length | 50.79 inches (1290 mm) |
| Width | 20.43 inches (519 mm) |
| Height | 49.61 inches (1260 mm) |
| Seat Height | 24.02 inches (610 mm) |
| Weight | 103.62 pounds (47.0 Kg) (dry), |
| Fuel Capacity | 0.61 Gallon (2.30 Liters) |
| Manuals | Service Manual |
The Derbi Dirt Boy50 was a single cylinder, four-stroke standard produced by Derbi between 2006 and 2009. Claimed horsepower was 4.56 HP (3.4 KW) @ 8500 RPM.
Engine[edit | edit source]
The engine was a air cooled single cylinder, four-stroke. A 39.0mm bore x 41.8mm stroke result in a displacement of just 49.9 cubic centimeters.
Drive[edit | edit source]
The bike has a 1-speed transmission.
Chassis[edit | edit source]
It came with a 2.50-12 front tire and a 2.75-10 rear tire. Stopping was achieved via single disc in the front and a expanding brake (drum brake) in the rear. The front suspension was a hydraulic fork. while the rear was equipped with a monoshock.. The Dirt Boy50 was fitted with a 0.61 Gallon (2.30 Liters) fuel tank. The bike weighed just 103.62 pounds (47.0 Kg). The wheelbase was 35.63 inches (905 mm) long.