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

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).

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	F1	F2	F27	F3	F3b
Locobase ID	1137	2837	5092	2838	4151
Railroad	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
Road Numbers
Gauge	Std	Std	Std	Std	Std
Builder	Altoona	Altoona	Alco-Schenectady	Burnham, Williams & Co	Burnham, Williams & Co
Year	1895	1895	1906	1901	1901
Valve Gear	Stephenson		Walschaert	Stephenson	Stephenson
	Locomotive Length and Weight
Driver Wheelbase	14.60'	14.60'	14.75'	14.75'	14.75'
Engine Wheelbase	23.33'	23.33'	23.83'	23.83'	23.83'
Ratio of driving wheelbase to overall engine wheebase	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	128100 lbs	134200 lbs	159300 lbs	142050 lbs	139100 lbs
Engine Weight	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	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	71.17 lb rail	74.56 lb rail	88.50 lb rail	78.92 lb rail	77.28 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	62"	62"	63"	62"	62"
Boiler Pressure	185 psi	205 psi	200 psi	205 psi	205 psi
Cylinders (dia x stroke)	20" x 28"	20" x 28" (1)	21" x 28"	20" x 28"	20" x 28"
Tractive Effort	28406 lbs	21332 lbs	33320 lbs	31477 lbs	31477 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	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	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	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	5550	6150	10388	6326.30	10030.65
Same as above plus superheater percentage	5550	6150	10388	6326.30	10030.65
Same as above but substitute firebox area for grate area	0	31365	36080	34132.50	31611
Power L1	0	5231.08	7178.58	6790.22	6741.32
Power MT	0	257.81	298.04	316.15	320.53