| MODEL | HERCULES 313 STARR 1957 |
| Year | 1957 |
| Engine Type | Single cylinder, two-stroke |
| Displacement / Capacity | 123 cc / 7.51 cu in |
| Bore X Stroke | 57 x 58 mm / 2.2 x 2.3 in |
| Compression Ratio | — |
| Cooling System | Air |
| Max Power | 4.7 kW / 6.5 hp @ 4700 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | Carburettor |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | — |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic |
| Rear Suspension | Rigid |
| Front Brakes | Drum (expanding) |
| Rear Brakes | Drum (expanding) |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 90 kg / 198.4 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.75-19 |
| Rear Tyre | 2.75-19 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | 85 km/h / 52.8 mph |
The Starr (German for rigid) was a 123 cc two-stroke Hercules with a wider bore than the earlier 311 and a little more power. It kept a rigid frame and telescopic forks, with a sprung saddle for comfort.
