Delaware, Lackawanna &Western 4-6-0 "Ten-Wheeler" Type Locomotives

Class 1001 (Locobase 3934)

Data from Railroad Gazette (22 June 1900), which notes that these camelbacks were quite similar in size to some Lake Shore & Michigan Southern 10-wheelers that burned bituminous coal. The Lackawanna engines generated steam in a wide Wootten firebox using fine anthracite.

Drury (1993) notes that these engines also were very similar to some Central of New Jersey locomotives. He adds that they were slow engines. Four were rebuilt with slide valves and all later were superheated and fitted with outside Walschaerts gear (see Locobase 5728).

Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004. Works #3463-3469 in March 1900. Except for 1005, scrapped in March 1930, all of the class were scrapped in January 1931.

Class 1008 (Locobase 5360)

Data from a table in June 1906 AERJ. Like their Brooks predecessors, these camelbacks generated steam in a wide Wootten firebox using fine anthracite. They were later superheated -- see Locobase 5729.

The quintet was retired over a long stretch of 11 years -- 1931-1942.

Class H-1a/b/c - superheated (Locobase 5728)

Data from Data from set of DL&W locomotive diagrams at http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003).

These camelback TenWheelers (in their saturated form, they're profiled in Locobase 3934) preserved the wide firebox, but changed to piston valves and Walschaerts valve motion when they were upgraded. All had been retired by 1931.

Class H-2b/H-6b (Locobase 5729)

Data from set of DL&W locomotive diagrams at http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003). Originally delivered as saturated-steam engines (see Locobase 5360), these camelback Tenwheelers lost a hefty percentage of tubes to accommodate the superheater flues. In line with the Lackawanna's thinking on superheat, boiler pressure dropped as well. They also added some useful adhesion weight.

H-4a & H-6a upgrades addressed the 26 engines in the Rogers (1013-1023) and Schenectady batches (1024-36) originally delivered in 1906-7 and 1908, 1910. The one difference was the truly huge 103-sq ft grate in the Wootten firebox.

Most of these were later converted to conventional-cab locomotives.

Specifications
Class	1001	1008	H-1a/b/c - superheated	H-2b/H-6b
Locobase ID	3934	5360	5728	5729
Railroad	Delaware, Lackawanna &Western	Delaware, Lackawanna &Western	Delaware, Lackawanna &Western	Delaware, Lackawanna &Western
Whyte	4-6-0	4-6-0	4-6-0	4-6-0
Road Numbers	1001-1007	1008-1012	1001-1007	1008-1013, 1015-16, 1024-
Gauge	Std	Std	Std	Std
Builder	Brooks	Alco-Schenectady	shops	shops
Year	1900	1905	1916	1916
Valve Gear	Stephenson	Stephenson	Walschaert	Walschaert
	Locomotive Length and Weight
Driver Wheelbase	14'	14.33'	14'	14.33'
Engine Wheelbase	25.25'	25.50'	25.25'	25.50'
Ratio of driving wheelbase to overall engine wheebase	0.55	0.56	0.55	0.56
Overall Wheelbase (engine & tender)	50.85'	54.02'	50.85'	54.15'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers	137000 lbs	154000 lbs	137000 lbs	167500 lbs
Engine Weight	179000 lbs	201000 lbs	179000 lbs	214800 lbs
Tender Light Weight	120000 lbs	120000 lbs	120000 lbs	134700 lbs
Total Engine and Tender Weight	299000 lbs	321000 lbs	299000 lbs	349500 lbs
Tender Water Capacity	6000 gals	6000 gals	6000 gals	7000 gals
Tender Fuel Capacity (oil/coal)	12 tons	10 tons	12 tons	10 tons
Minimum weight per yard of rail on which locomotive could run	76.11 lb rail	85.56 lb rail	76.11 lb rail	93.06 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	69.40"	69"	69"	69"
Boiler Pressure	210 psi	215 psi	200 psi	200 psi
Cylinders (dia x stroke)	20" x 28"	22.5" x 26"	21" x 28"	23" x 26"
Tractive Effort	28807 lbs	34862 lbs	30423 lbs	33887 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.76	4.42	4.50	4.94
	Heating Ability
Firebox Area	180 sq. ft	221.70 sq. ft	168 sq. ft	220 sq. ft
Grate Area	85.58 sq. ft	94.80 sq. ft	84 sq. ft	94 sq. ft
Evaporative Heating Surface	2700	3378	2070	2564
Superheating Surface			382	490
Combined Heating Surface	2700	3378	2452	3054
Evaporative Heating Surface/Cylinder Volume	265.20	282.32	184.42	205.08
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	17971.80	20382	16800	18800
Same as above plus superheater percentage	17971.80	20382	19417.29	21816.37
Same as above but substitute firebox area for grate area	37800	47665.50	38834.58	51059.59
Power L1	8588.87	9271.06	13007.44	14852.91
Power MT	414.64	398.17	627.95	586.48