| Pennsylvania Railroad H6/H6a/H6b/H6sa/H6sb | |
|---|---|
| PRR 2846 | |
| 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 |
| Configuration | 2-8-0 |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Leading wheel diameter |
36 in (0.91 m) |
| Driver diameter | 56 in (1.42 m) |
| Length | 65 ft 11 in (20.09 m) (including 70F70 tender)[1] |
| Weight on drivers | 180,000 lb (81,650 kg))[1] |
| Locomotive weight | 204,800 lb (92,900 kg))[1] |
| Locomotive & tender combined weight |
343,600 lb (155,900 kg) |
| Fuel type | Coal |
| Fuel capacity | 29,200 lb (13,200 kg))[1]{ |
| Water capacity | 7,200 US gal (27,000 l; 6,000 imp gal))[1] |
| 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) |
| Cylinders | Two |
| Cylinder size | H6/H6a/H6b: 22 × 28 in (560 × 710 mm) H6sa/H6sb: 23 × 28 in (580 × 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) |
| Preserved | PRR 2846[2] |
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Consolidation Freight Locomotive No. 2846
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| Nearest city: | Strasburg, Pennsylvania |
| Area: | 0.1 acres (0.040 ha) |
| Built: | 1905 |
| Architect: | Baldwin Locomotive Works |
| Governing body: | Private |
| 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]
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.
| 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 | ||||
| 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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