These are the known mechanical and performance specifications for your 1955 Hercules 319.
Displacement173.00 ccm (10.56 cubic inches)
DetailsSingle cylinder, two-stroke
Bore/Stroke57.0 x 58.0 mm (2.2 x 2.3 inches)
Horespower9.00 HP (6.6 kW)
Top Speed90.0 km/h (55.9 mph)
Fuel Economy & Polution
Frame TypeSingle cradle
Alt. Seat Height
Dry Weight116.0 kg (255.7 pounds)
Wheels & Brakes
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
It appears you're interested in specifications for the Hercules 319. This Sport model is powered by a Single cylinder, two-stroke engine with 173.00 ccm (10.56 cubic inches) of actual displacement before compression. Fueling is metered via Carburettor allowing this machine to produce its 9.00 HP (6.6 kW) horsepower and torque. According to our records engine heat of the Hercules 319 is moderated by Air. You'll need to get familiar with the transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 19-Mar and the rear is 19-Mar. The entire package is supported by the frame, Single cradle. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Expanding brake (drum brake) front brakes and Expanding brake (drum brake) rear brakes. The Hercules 319 was launched in 1955, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.