| On a | level | 1000 | gross tons. | |
| " | 20 | ft. grade | 460 | " " |
| " | 40 | " | 290 | " " |
| " | 60 | " | 205 | " " |
| " | 80 | " | 150 | " " |
| " | 100 | " | 120 | " " |
The distance between centres of drivers (rigid wheel-base) can be made 8 ft. 6 in., if preferred to 8 ft. as given above. This greater spread of wheels, throwing more weight on the drivers, gives the engine greater adhesion, and thus adds to its efficiency for freight service. Owing to the peculiar construction of the truck, the engine is found to pass short curves without difficulty, even with this greater distance between driving-wheel-centres.
DIVISION I.
ROAD LOCOMOTIVES FOR PASSENGER OR FREIGHT SERVICE.
CLASS 28 C.
GENERAL DESIGN ILLUSTRATED BY PRINTS ON PAGES [56], [60], AND [64].
CYLINDERS.
- Diameter of cylinders 17 inches.
- Length of stroke 22 or 24 inches.
DRIVING-WHEELS.
- Diameter of drivers 56 to 66 inches.