Diameter of wheels 24 to 30 inches.

WHEEL-BASE.

Total wheel-base 20 ft. 7-3/4 inches.

Rigid " (distance between driving-wheel-centres) 7 ft.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 35,000 pounds.

On truck 20,000 "

------ Total weight of engine, about 55,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 835 gross tons.

" 20 ft. grade 380 " "

" 40 " 240 " "

" 60 " 170 " "

" 80 " 125 " "

" 100 " 100 " "

[Ill.u.s.tration: Locomotive.]

DIVISION I.

ROAD LOCOMOTIVES FOR Pa.s.sENGER OR FREIGHT SERVICE.

CLa.s.s 24-1/2 C

General Design Ill.u.s.trated by Prints on Pages 56 and 60.

CYLINDERS.

Diameter of cylinders 15 inches.

Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

Diameter of drivers 56 to 66 inches.

TRUCK.

FOUR-WHEELED CENTRE-BEARING TRUCK, WITH SWING BOLSTER.

Diameter of wheels 24 to 30 inches.

WHEEL-BASE.

Total wheel-base 21 ft. 3 inches.

Rigid " (distance between driving-wheel-centres) 7 ft. 8 inches.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1800 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 39,000 pounds.

On truck 21,000 "

------ Total weight of engine, about 60,000 "

LOAD.

IN ADDITION TO WEIGHT OF ENGINE AND TENDER.

On a level 930 gross tons.

" 20 ft. grade 430 " "

" 40 " 270 " "

" 60 " 190 " "

" 80 " 140 " "

"100 " 110 " "