LOAD. IN ADDITION TO ENGINE AND TENDER. On a level 1400 gross tons. " 20 ft. grade 655 " " " 40 " 415 " " " 60 " 300 " " " 80 " 230 " " " 100 " 180 " " DIVISION III. FREIGHT OR PUSHING ENGINES--"MOGUL" PATTERN. CLASS 25-1/2 D. General Design Illustrated by Print on Page 74. CYLINDERS. Diameter of cylinders 17 inches. Length of stroke 22 or 24 inches. DRIVING-WHEELS. REAR AND FRONT PAIRS WITH FLANGED TIRES 5-1/2 INCHES WIDE. MAIN PAIR WITH PLAIN TIRES 6 INCHES WIDE. Diameter of drivers 48 to 54 inches. TRUCK. ONE PAIR OF LEADING WHEELS, WITH SWING BOLSTER AND RADIUS-BAR, EQUALIZED WITH FRONT DRIVERS. Diameter of wheels 30 inches. WHEEL-BASE. Total wheel-base 21 ft. 10 inches. Rigid " (distance between centres of rear and front drivers) 14 ft. 6 inches. TENDER. ON TWO FOUR-WHEELED TRUCKS. Capacity of tank 1800 gallons. WEIGHT OF ENGINE IN WORKING ORDER. On drivers 62,000 pounds. On leading wheels 9,000 " ------ Total weight of engine, about 71,000 " LOAD. IN ADDITION TO ENGINE AND TENDER. On a level 1500 gross tons. " 20 ft. grade 695 " " " 40 " 445 " " " 60 " 320 " " " 80 " 245 " " " 100 " 195 " " DIVISION III. FREIGHT OR PUSHING ENGINES--"MOGUL" PATTERN. CLASS 30 D. General Design Illustrated by Print on Page 74. CYLINDERS. Diameter of cylinders 18 inches. Length of stroke 22 or 24 inches. DRIVING-WHEELS. REAR AND FRONT PAIRS WITH FLANGED TIRES 5-1/2 INCHES WIDE. MAIN PAIR WITH PLAIN TIRES 6 INCHES WIDE. Diameter of drivers 48 to 54 inches. TRUCK. ONE PAIR OF LEADING WHEELS, WITH SWING BOLSTER AND RADIUS-BAR, EQUALIZED WITH FRONT DRIVERS. Diameter of wheels 30 inches. WHEEL-BASE.