Hercules 313 Starr: history, specs, pictures

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Hercules 313 Starr
Production 1951 - 1957
single cylinder, two-stroke
Bore / Stroke 57.0mm x 58.0mm
Top Speed 53 mph (85 km/h)
Horsepower 6.3 HP (4.7 KW) @ 4700RPM
Fuel System carburetor
Transmission Final Drive: chain
Suspension Front: telescopic
Rear: rigid
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 2.75-19
Rear Tire 2.75-19
Weight 198.42 pounds (90.0 Kg) (dry),
Fuel Capacity 2.91 Gallon (11.00 Liters)
Manuals Service Manual

The Hercules 313 Starr was a single cylinder, two-stroke standard produced by Hercules between 1951 and 1957. It could reach a top speed of 53 mph (85 km/h). Claimed horsepower was 6.3 HP (4.7 KW) @ 4700 RPM.


The engine was a air cooled single cylinder, two-stroke. A 57.0mm bore x 58.0mm stroke result in a displacement of just 123.0 cubic centimeters.


It came with a 2.75-19 front tire and a 2.75-19 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The front suspension was a telescopic while the rear was equipped with a rigid. The 313 Starr was fitted with a 2.91 Gallon (11.00 Liters) fuel tank. The bike weighed just 198.42 pounds (90.0 Kg).