Vandalia Line / Pennsylvania 2-6-0 "Mogul" Type Locomotives

Class D (Locobase 9946)

Data from C H Caruthers, "Early Baldwin Locomotives on the Pennsylvania Railroad", Locomotive Engineering, Vol XI, No 2 (February 1898), p. 110. Works numbers were 505-507 in December 1852, 509-510 in January 1853.

These engines were named Cumberland, Jefferson, Northumberland, Schuylkill, and York. The drivers were widely spaced and the leading truck was held firmly in axle horns, which is why these don't really qualify as "Moguls". One locomotive became a 4-coupled engine when two sets of 54" drivers was mounted on the second and third driving axles and the first axle removed. Not long after, the third axle also received 54" drivers and was coupled.

About this class of not-quite-Moguls, Caruthers says simply: "They were good engines, rendered efficient service,and were not cut up until the latter part of the sixties."

Connelly's list of Baldwin locomotives gives a more varied picture of their end, with some being converted from 4-6-0s to 2-6-0s and others vice versa. The Jefferson & Northumberland were rebuilt and sold in 1856 to the Steubenville & Indiana.

Class F1 (Locobase 1137)

Data from diagram scanned in by Robert Schoenberg of http://prr.railfan.net . On the Pittsburgh Division, these Moguls were rated at 375 tons light, 433 tons loaded. Fitted with Belpaire firebox.

Class data from Bob Berkey's The Broad Way website. http://broadway.pennsyrr.com/Rail/Prr/Rosters/steam_class.html#class_j (visited 16 Feb 2003).

Class F2 (Locobase 2837)

Data from diagram scanned in by Robert Schoenberg of http://prr.railfan.net . See also http://www.northeast.railfan.net/prr_steam2.html

This was a two-cylinder cross-compound version of the F1 Mogul, also fitted with Belpaire firebox..

Class data from Bob Berkey's The Broad Way website. http://broadway.pennsyrr.com/Rail/Prr/Rosters/steam_class.html#class_j (visited 16 Feb 2003).

Class F27 (Locobase 5092)

Pieced together from a ghost elevation put on ghostdepot.com/rg/images/rolling/locomotive/alco%20dwg%20mogal.jpg (August 2002) and Edson. Further data filled in by table in June 1907 American Engineering & Railroad Journal (AERJ).

Railroad Gazette reported that the following supplied equipment for these locomotives:

Westinghouse air-brakes

Pennsylvania R. R. specification axles

Alexander bell ringers

Franklin Manufacturing Co.'s boiler lagging

"Creco" or Davis brake-beams

Tower couplers

Nathan Injectors and sight-feed lubricators

Hayden piston and valve rod packings

Coale's safety valves

Union Spring Co.'s springs,

Latrobe driving, truck and tender wheel tires and cast-steel wheel centers.

The Vandalia Line, itself an amalgam of railroads principally including the Terre Haute & Indianapolis, was taken into the Pennsylvania system in 1917 as part of the Pittsburgh, Cincinnati, Chicago & St Louis Railway.

Class F3 (Locobase 2838)

Data from diagram scanned in by Robert Schoenberg of http://prr.railfan.net . See also http://www.northeast.railfan.net/prr_steam2.html

Part of a 78-engine order, these had the Belpaire boiler while the F-3bs used a wagon-top design.

Class F3b (Locobase 4151)

Railroad Gazette 1 November 1901 describes this variant of the 78-engine order then under construction. These differed from the 24 F-3s in that they had a wagon-top boiler rather than the Pennsy-standard Belpaire

Specifications
Class	D	F1	F2	F27	F3	F3b
Locobase ID	9946	1137	2837	5092	2838	4151
Railroad	Pennsylvania (PRR)	Pennsylvania (PRR)	Pennsylvania (PRR)	Vandalia Line (PRR)	Pennsylvania (PRR)	Pennsylvania (PRR)
Whyte	2-6-0	2-6-0	2-6-0	2-6-0	2-6-0	2-6-0
Road Numbers	42, 44-45, 47, 49
Gauge	Std	Std	Std	Std	Std	Std
Builder	M W Baldwin	Altoona	Altoona	Alco-Schenectady	Burnham, Williams & Co	Burnham, Williams & Co
Year	1852	1895	1895	1906	1901	1901
Valve Gear	V-hook	Stephenson		Walschaert	Stephenson	Stephenson
	Locomotive Length and Weight
Driver Wheelbase	13'	14.60'	14.60'	14.75'	14.75'	14.75'
Engine Wheelbase	18'	23.33'	23.33'	23.83'	23.83'	23.83'
Ratio of driving wheelbase to overall engine wheebase	0.72	0.63	0.63	0.62	0.62	0.62
Overall Wheelbase (engine & tender)		51.12'	51.12'	56.85'	54.48'	54.45'
Axle Loading (Maximum Weight per Axle)		44650 lbs	46100 lbs		48700 lbs	49200 lbs
Weight on Drivers	46700 lbs	128100 lbs	134200 lbs	159300 lbs	142050 lbs	139100 lbs
Engine Weight	65500 lbs	146200 lbs	156800 lbs	187000 lbs	163000 lbs	160000 lbs
Tender Light Weight		76000 lbs	76000 lbs	144800 lbs	112000 lbs	111900 lbs
Total Engine and Tender Weight	65500 lbs	222200 lbs	232800 lbs	331800 lbs	275000 lbs	271900 lbs
Tender Water Capacity		3600 gals	3600 gals	7500 gals	6000 gals
Tender Fuel Capacity (oil/coal)		7.5 tons	7.5 tons	13 tons	11 tons	tons
Minimum weight per yard of rail on which locomotive could run	26 lb rail	71.17 lb rail	74.56 lb rail	89 lb rail	78.92 lb rail	77.28 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	44"	62"	62"	63"	62"	62"
Boiler Pressure	75 psi	185 psi	205 psi	200 psi	205 psi	205 psi
Cylinders (dia x stroke)	18" x 22"	20" x 28"	20" x 28" (1)	21" x 28"	20" x 28"	20" x 28"
Tractive Effort	10328 lbs	28406 lbs	21332 lbs	33320 lbs	31477 lbs	31477 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.52	4.51	6.29	4.78	4.51	4.42
	Heating Ability
Firebox Area			153 sq. ft	180.40 sq. ft	166.50 sq. ft	154.20 sq. ft
Grate Area	14.10 sq. ft	30 sq. ft	30 sq. ft	51.94 sq. ft	30.86 sq. ft	48.93 sq. ft
Evaporative Heating Surface		1878	1878	2935	2431	2469
Superheating Surface
Combined Heating Surface	0	1878	1878	2935	2431	2469
Evaporative Heating Surface/Cylinder Volume		184.46	368.92	261.48	238.78	242.51
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	1058	5550	6150	10388	6326.30	10030.65
Same as above plus superheater percentage	1058	5550	6150	10388	6326.30	10030.65
Same as above but substitute firebox area for grate area	0	0	31365	36080	34132.50	31611
Power L1	0	0	5231.08	7179	6790.22	6741.32
Power MT	0	0	257.81	298.06	316.15	320.53