| 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 |
