Delaware, Lackawanna & Western Poconos

The Delaware, Lackawanna & Western designed and purchased five 4-8-4s (road numbers 1501 through 1505) to increase its motive power for the "Lackawanna Limited" and other passenger trains. These locomotives were assigned Class Q-1 and were built by the American Locomotive Company after the Northern Pacific took delivery of the first 4-8-4s in 1927. DL&W wanted its new locomotives to have a distinction of their own and decided to call them "Poconos", for the mountains that the railroad crossed. Designed with passenger service in mind, these locomotives had 73" drivers and a tractive effort of 64,500 pounds.

Starting in 1929, DL&W began to receive thirty new "Poconos" (road numbers 1601 through 1620 Class Q-2 and 1621 through 1630 Class Q-3) from ALCO. These were intended for freight service and had 70" drivers and a tractive force of 71,600 pounds.

In 1934, it purchased 20 more Class Q-4 (road numbers 1631 through 1650) ALCO "super power" 4-8-4s, this time intended for dual service. They were designed to have 74" drivers, a tractive effort of 72,000 pounds and roller bearings on all axles.

There are no survivors

Class	Road Numbers	Year Built	Builder
Q-1	1501-1505	1927	ALCO
Q-2	1601-1620	1929	ALCO
Q-3	1621-1630	1932	ALCO
Q-4	1631-1650	1934	ALCO

Specifications
	Class Q-1	Class Q-2	Class Q-4
Wheel Arrangement:	4-8-4	4-8-4	4-8-4
Length:			101' - 9"
Drivers:	77" dia.	70" dia.	74" dia.
Weight on Drivers:	269,000 lbs	262,000 lbs	274,000 lbs
Locomotive Weight:	421,000 lbs	418,000 lbs	447,000 lbs
Locomotive & Tender Weight:	637,000 lbs	707,000 lbs	760,000 lbs
Grate Area:	88.2 sq ft	88.2 sq ft	88.2 sq ft
Cylinders (dia. x stroke):	(2) 27" x 32"	(2) 27" x 32"	(2) 28" x 32"
Boiler Pressure:	250 psi	235 psi	250 psi
Tractive Effort:	64,500 lbs	71,600 lbs	72,000 lbs
Tender Capacity:
Water:	12,000 gals.	15,000 gals.	16,000 gals.
Coal:	14 tons	22 tons	26 tons

Delaware, Lackawanna & Western Poconos

Photos

References