|Pennsylvania Railroad H6/H6a/H6b/H6sa/H6sb|
|Type and origin|
|Builder||PRR Altoona Works, Baldwin Locomotive Works, Alco -P|
|Build date||H6: 1899-1901
|Total produced||H6: 189
|Number rebuilt||699 to H6sa/H6sb|
|Gauge||4 ft 8 1⁄2 in (1,435 mm)|
|36 in (0.91 m)|
|Driver diameter||56 in (1.42 m)|
|Length||65 ft 11 in (20.09 m) (including 70F70 tender)|
|Weight on drivers||180,000 lb (81,650 kg))|
|Locomotive weight||204,800 lb (92,900 kg))|
|Locomotive and tender
|343,600 lb (155,900 kg)|
|Fuel capacity||29,200 lb (13,200 kg))|
|Water capacity||7,200 US gal (27,000 l; 6,000 imp gal))|
|Boiler pressure||195 psi (1.34 MPa)|
|Firegrate area||H6: 33.3 sq ft (3.09 m2)
Others: 49.0 sq ft (4.55 m2)
|Cylinder size||H6/H6a/H6b: 22 in × 28 in (560 mm × 710 mm)
H6sa/H6sb: 23 in × 28 in (580 mm × 710 mm)
|Tractive effort||H6: 42,717 lbf (190.01 kN)
H6a/H6b: 42,168 lbf (187.57 kN)
H6sa/H6sb43,841 lbf (195.01 kN)
Consolidation Freight Locomotive No. 2846
|Nearest city||Strasburg, Pennsylvania|
|Area||0.1 acres (0.040 ha)|
|Architect||Baldwin Locomotive Works|
|MPS||Pennsylvania Railroad Rolling Stock TR|
|NRHP Reference #||
|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:
|Class||Firebox||Gate||Tractive Force||Driver Size||#Built||Years Built|
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.
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.
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.
- 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 Register Information System". National Register of Historic Places. National Park Service. 2009-03-13.
- 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
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