PRR H6

Pennsylvania Railroad H6/H6a/H6b/H6sa/H6sb

PRR 2846

Type and origin
Power type	Steam
Builder	PRR Altoona Works, Baldwin Locomotive Works, Alco -P
Build date	H6: 1899-1901 H6a: 1901-1905 H6b: 1905–1913
Total produced	H6: 189 H6a: 1,242 H6b: 603 Total: 2,034
Number rebuilt	699 to H6sa/H6sb

Specifications
Configuration	2-8-0
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm)
Leading dia.	36 in (0.91 m)
Driver dia.	56 in (1.42 m)
Length	65 ft 11 in (20.09 m) (including 70F70 tender)^[1]
Adhesive weight	180,000 lb (81,650 kg))^[1]
Loco weight	204,800 lb (92,900 kg))^[1]
Total weight	343,600 lb (155,900 kg)
Fuel type	Coal
Fuel capacity	29,200 lb (13,200 kg))^[1]
Water cap	7,200 US gal (27,000 l; 6,000 imp gal))^[1]
Firebox: • Firegrate area	H6: 33.3 sq ft (3.09 m²) Others: 49.0 sq ft (4.55 m²)
Boiler pressure	195 psi (1.34 MPa)
Cylinders	Two
Cylinder size	H6/H6a/H6b: 22 in × 28 in (560 mm × 710 mm) H6sa/H6sb: 23 in × 28 in (580 mm × 710 mm)

Performance figures
Tractive effort	H6: 42,717 lbf (190.01 kN) H6a/H6b: 42,168 lbf (187.57 kN) H6sa/H6sb43,841 lbf (195.01 kN)

Career
Preserved	PRR 2846^[2]

Consolidation Freight Locomotive No. 2846
U.S. National Register of Historic Places
Show map of Pennsylvania Show map of the US
Nearest city	Strasburg, Pennsylvania
Coordinates	39°58′56″N 76°9′40″W / 39.98222°N 76.16111°W / 39.98222; -76.16111Coordinates: 39°58′56″N 76°9′40″W / 39.98222°N 76.16111°W / 39.98222; -76.16111
Area	0.1 acres (0.040 ha)
Built	1905
Architect	Baldwin Locomotive Works
MPS	Pennsylvania Railroad Rolling Stock TR
NRHP Reference #	79002263 ^[3]
Added to NRHP	December 17, 1979

The Pennsylvania Railroad's class H6, H6a, and H6b steam locomotives were of the 2-8-0 "Consolidation" freight type, the most numerous class on the railroad with 2032 units. The three sub-classes differed as follows:^[4]

Class	Firebox	Gate	Tractive Force	Driver Size	#Built	Years Built
H6	narrow	33.3	42717	56”	189	1899-01
H6a	Wide	49	42168	56"	1242	1901-05
H6b	Wide	49	42168	56"	603	1905-13

In the 1920s, 699 H6a and H6b had superheaters added and cylinder size increased from 22” to 23” and reclassified to H6sa and H6sb.

Class H6 were used throughout the system as mainline freight haulers, on local freights, and as switchers in yards. They were frequently seen double and triple heading long freight trains up the steep grades on the Pennsy.^[5]

During the period when the PRR was building the H-6 class, the railroad had effective stock control of the B&O, and installed a cooperative president Leonor Loree. The B&O acquired from American Locomotive Co. a large group of identical locomotives, originally classed I-4, but later classified as B&O class E-24. The E-24 class had many variations, some being converted to switchers, superheated, and new valve chests. The E-24a was equivalent to the PRR H-6sb. On the B&O the E-24 class survived to the Diesel era.

Survivors

PRR #2846, an H6sb built in 1905 by the Baldwin Locomotive Works, has been preserved by the Railroad Museum of Pennsylvania with two other examples of the H class. #2846 was added to the National Register of Historic Places in 1979 as Consolidation Freight Locomotive No. 2846.

References

1 2 3 4 5 Pennsylvania Railroad. "PRR H6b 2-8-0 Steam Loco". PRR.Railfan.net. Retrieved 2008-01-02.
↑ "Motive Power Roster Steam Locomotives: 24" (PDF). Railroad Museum of Pennsylvania. Retrieved 27 January 2010.
↑ National Park Service (2009-03-13). "National Register Information System". National Register of Historic Places. National Park Service.
↑ Staufer, Alvin F., Edson, D. William, and Harley, E. Thomas. Pennsy Power lll. Staufer. ISBN 0-944513-10-7
↑ Westing, Fred. Pennsy Steam and Semaphores. Superior Publishing ISBN 0-517-36955-9

Wikimedia Commons has media related to Pennsylvania Railroad H6.

Pennsylvania Railroad locomotives

A (0-4-0):	A1 A2 A3 A4 A5s

B (0-6-0):	B1 (s) B2 B3 B4 B5 B6 B7 B8 B1 (e)

C (0-8-0):	C1 C29 C30 C31

D (4-4-0):	D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D21 D22 D23 D24 D25 D26 D30 D31 D32 D33 D34 D35 D36 D37 D38 D39 D61 "Odd D" #10003

E (4-4-2):	E1 E2 E3 E4 E5 E6 E7 E21 E22 E23 E28 de Glehn

F (2-6-0):	F1 F2 F3 F21 F22 F23 F24 F25 F26 F27 F30 F31 F61

G (4-6-0):	G1 G2 G3 G4 G5 G53

H (2-8-0):	H1 H2 H3 H4 H5 H6 H8 H9 H10

I (2-10-0):	I1s

J (2-6-2 and 2-10-4):	J1 J28

K (4-6-2):	K1 K2 K3s K4s K5

L (2-8-2):	L1s L2s L5 L6

M (4-8-2):	M1

N (2-10-2):	N1s N2s

O (4-4-4):	O1

P (4-6-4):	P5

Q (4-6-4-4 and 4-4-6-4):	Q1 Q2

R (4-8-4):	R1

S (6-4-4-6 and 6-8-6):	S1 S2

T (4-4-4-4):	T1

Articulated steam locomotives:	CC1s CC2s HC1s HH1s HH2s

Articulated electric locomotives:	AA1 BB1 BB2 BB3 DD1 DD2 FF1 FF2 GG1

Non-standard:	E2b E2c E3b E44

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