Diameter of cylinders 15 inches. Length of stroke 22 " DRIVING-WHEELS. Diameter of drivers 44 inches. WHEEL-BASE. Total wheel-base 9 ft. 9 inches. Rigid " 9 ft. 9 inches. TENDER. ON TWO FOUR-WHEELED TRUCKS. Capacity of tank 1600 gallons. WEIGHT OF ENGINE IN WORKING ORDER. Total weight of engine, about 52,000 pounds. LOAD. IN ADDITION TO ENGINE AND TENDER. On a level 1260 gross tons. " 20 ft. grade 590 " " " 40 " 375 " " " 60 " 270 " " " 80 " 210 " " " 100 " 165 " " DIVISION V. SWITCHING ENGINES WITH SEPARATE TENDERS. CLASS 27-1/2 D. General Design Illustrated by Print on Page 100. CYLINDERS. Diameter of cylinders 16 inches. Length of stroke 22 or 24 inches. DRIVING-WHEELS. Diameter of drivers 44 to 48 inches. WHEEL-BASE. Total wheel-base 10 feet. Rigid " 10 " TENDER. ON TWO FOUR-WHEELED TRUCKS. Capacity of tank 1600 gallons. WEIGHT OF ENGINE IN WORKING ORDER. Total weight of engine, about 60,000 pounds. LOAD. IN ADDITION TO ENGINE AND TENDER. On a level 1460 gross tons. " 20 ft. grade 685 " " " 40 " 440 " " " 60 " 320 " " " 80 " 245 " " " 100 " 200 " " DIVISION V. SWITCHING ENGINES WITH SEPARATE TENDERS. CLASS 25-1/2 D. General Design Illustrated by Print on Page 100. CYLINDERS. Diameter of cylinders 17 inches. Length of stroke 22 or 24 inches. DRIVING-WHEELS. Diameter of drivers 48 inches. WHEEL-BASE. Total wheel-base 10 feet. Rigid " 10 " TENDER. ON TWO FOUR-WHEELED TRUCKS. Capacity of tank 1800 gallons. WEIGHT OF ENGINE IN WORKING ORDER.