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| Title: |
BO 72-6-6-2 #7400 - Baltimore & Ohio |
| Description: |
Sodly, this photo was taken just a few months before the massive and mighty BO 2-6-6-2 #7400 was scrapped. This was the first 2-6-6-2 built for Baltimore & Ohio as a test of the Emerson watertube firebox.. KK-1 class In the Emerson variant, a 40" (1016 mm) diameter drum ran along the centerline over the grate and from front sheet to back head. Headers at the top and bottom of the firebox were connected by two rows (190 tubes total) of 2 1/2"/63.5 mm diameter water tubes. The top header was joined to the drum by 13 4" (102 mm) diameter nipples on each side. In addition to the conventional fire tubes that extended from the front of the firebox to the smokebox, the Emerson firebox's sides consisted of 190 2 1/4" (57 mm) tubes, each 7 ft 10 in (2.39 m) long, that circulated water from bottom to top. Total heating surface area was calculated as 606 sq ft (56.30 sq m). It was briefly rebuilt in October of 1932 into a 4-4-6-2 with the same number but then rebuilt back into the 2-6-6-2 in January of 1934. After only 21 years of service, the loco was scrapped in July of 1951. The photo is from the Ralph G. Dunn collection. |
| Photo Date: |
5/27/1951 Upload Date: 1/30/2024 4:31:52 AM |
| Location: |
Fairmont, WV |
| Author: |
Gary Everhart |
| Categories: |
Roster,Yard,Steam |
| Locomotives: |
BO 7400(2-6-6-2) |
| Views: |
36 Comments: 0 |
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| Title: |
BO 2-6-6-2 #7450 - Baltimore & Ohio |
| Description: |
Here is another view of Baltimore & Ohio 2-6-6-2 Mogul Mallet type steam #7450 built by Baldwin in November of 1930. This was the control locomotive used to compare performance between its conventional firebox compared to BO #7400's experimental Emerson watertube firebox. The loco lasted for 23 years before being sold for scrap in July of 1953. No date, location or photographer was listed for this photo but it appears to be West Virginia area around 1950 |
| Photo Date: |
6/1/1950 Upload Date: 1/30/2024 4:31:57 AM |
| Location: |
Unknown, WV |
| Author: |
Gary Everhart |
| Categories: |
Roster,Yard,Steam |
| Locomotives: |
BO 7450(2-6-6-2) |
| Views: |
32 Comments: 0 |
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| Title: |
BO 2-6-6-2 #7450 - Baltimore & Ohio |
| Description: |
This single loco in the KK2 class was built by Baldwin in November of 1930 with a conventional firebox to campare to BO 2-6-6-2 7400 with the Emerson watertube firebox. The loco lasted for 23 years before being sold for scrap in July of 1953. This is a Harold K. Vollrath photo |
| Photo Date: |
7/1/1951 Upload Date: 1/30/2024 4:31:54 AM |
| Location: |
Cumberland, MD |
| Author: |
Gary Everhart |
| Categories: |
Roster,Yard,Steam |
| Locomotives: |
BO 7450(2-6-6-2) |
| Views: |
26 Comments: 0 |
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| Title: |
BO 2-6-6-4 #7702 - Baltimore & Ohio |
| Description: |
Unfortunately, the RRPA data base does not have an option for the 2-6-6-4 wheel config from Baldwin. This loco was built by Baldwin in 1934 as Seaboard Air Line #2502. It was then sold to the B&O in August of 1947 and renumbered BO 7702 as seen here later. The loco lasted only 6 more years on the roster before being sold for scrap in March of 1953. Specs - 69" drivers, impressive 230 psi boiler pressure, four sets of 22x30" cylinders, massive engine weight of 480,000 lb, tractive effort of 82,000 lb. No exact date or photographer was listed for the photo. |
| Photo Date: |
6/1/1947 Upload Date: 3/6/2023 5:48:47 AM |
| Location: |
Hagerstown, MD |
| Author: |
Gary Everhart |
| Categories: |
RollingStock,Yard,Steam |
| Locomotives: |
BO 7702(2-6-6-2) |
| Views: |
141 Comments: 0 |
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| Title: |
BO 2-6-6-4 #7705 |
| Description: |
Unfortunately the RRPA data base does not have an option for the 2-6-6-4 configuration so it is listed under the 2-6-6-2 choice. Built by Baldwin in 1936 as Seaboard Air Line #2505, it served fairly well before being sold to the B&O in August of 1947. It was renumbered BO #7705 and continued until beind sold for scrap in June of 1953. Specs - 69" drivers, impressive 230 psi boiler pressure, four sets of 22x30" cylinders, massive engine weight of 480,000 lb, tractive effort of 82,000 lb. No exact date or photographer was listed for the photo. |
| Photo Date: |
6/1/1947 Upload Date: 3/6/2023 5:48:50 AM |
| Location: |
Unknown, MD |
| Author: |
Gary Everhart |
| Categories: |
RollingStock,Yard,Steam |
| Locomotives: |
BO 7705(2-6-6-2) |
| Views: |
114 Comments: 0 |
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| Title: |
BO 2-6-6-4 #7707 - Baltimore & Ohio |
| Description: |
This 1937 Baldwin built articulated 2-6-6-4 was originally built as Seaboard Air Line #2507 but sold to the B&O in 1947. The RRPA data base does not have a choice for a Baldwin 2-6-6-4 so the 2-6-6-2 option was chosen. Specs - SAL class R-2, B&O class KB-1a, 69" drivers, impressive 230 psi boiler pressure, 22/30" cylinders, engine weight of 480,000 lb, tractive effort of 82,280 lb. The date is approximate. August A. Thieme photo |
| Photo Date: |
6/1/1949 Upload Date: 1/8/2017 6:09:54 AM |
| Location: |
Cumberland, MD |
| Author: |
Gary Everhart |
| Categories: |
Roster,Yard,Steam |
| Locomotives: |
BO 7707(2-6-6-2) |
| Views: |
910 Comments: 4 |
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