The HYPAC C778D Static Smooth Drum Roller is a heavy-duty compaction machine designed for asphalt and soil applications. It features a 130-horsepower Cummins QSB4.5, 4-cylinder diesel engine delivering power at 2200 rpm, optimized with an ECO-Mode system for efficient fuel usage. The roller has a drum width of 78 inches and a diameter of 48 inches, providing a static linear load of 162.4 pounds per inch for effective soil and asphalt compaction. It operates at high vibration frequencies of 3400 to 4000 vibrations per minute with nominal amplitude around 0.1 inch, enhancing compaction effectiveness. The machine's dimensions include an overall width of 7 feet, length of approximately 16.7 feet, and a height to the top of the cab of 9.3 feet, with a ground clearance of 15 inches, supporting maneuverability and job site versatility. Its turning radius is 16.5 feet inside, and wheelbase length is 10 feet. The roller has a maximum travel speed of about 10.1 mph and an operating weight of 25,800 pounds, suitable for medium to large scale paving projects. The cooling system holds 4.8 gallons of fluid, while the engine oil capacity is 4.3 gallons. Fuel capacity is generous at 60 gallons, enabling extended operation times. Equipped with dual hydrostatic drive motors, the C778D offers smooth speed control and directional changes, improving operator control and compaction consistency. The 12-volt electrical system powers operational electronics and controls. Overall, the HYPAC C778D is engineered for reliability, efficiency, and high productivity in road construction and paving tasks.