Maine Central class C 4-6-2

Maine Central Railroad Class C locomotives were intended for main line passenger service. They were of 4-6-2 wheel arrangement in the Whyte notation, or " 2'C1' " in UIC classification. They replaced earlier class N 4-6-0 locomotives beginning in 1907. Class C locomotives pulled named passenger trains until replacement by diesel locomotives after World War II.[1]

Maine Central class C
Type and origin
Reference:[1]
Power typeSteam
BuilderALCO
Build date1907–1924
Total produced21
Specifications
Configuration:
​
 • Whyte4-6-2
 • UIC2'C1'
Gauge4 ft 8 1⁄2 in (1,435 mm)
Leading dia.33 in (838 mm)
Driver dia.73 in (1,854 mm)
Trailing dia.46 in (1,168 mm)
Wheelbase33 ft 8 in (10.26 m)
Length75 ft 0 in (22.86 m) including tender
Height14 ft 7 1⁄4 in (4.45 m)
Loco weight228,000 lb (103.4 tonnes)
Total weight367,000 lb (166.5 tonnes)
Fuel typeCoal
Fuel capacity11 t
Water cap7,000 US gal (26 m3)
Firebox:
 • Firegrate area		50 sq ft (4.65 m2)
Boiler pressure200 lbf/in2 (14 kg/cm2)
CylindersTwo
Cylinder size22 in × 28 in (559 mm × 711 mm)
Valve gearWalschaerts
Performance figures
Tractive effort32,000 lbf (142.3 kN)
Career
Retired1954
Preserved1

Sub-classes

All were built in American Locomotive Company's plant at Schenectady, New York and were numbered from 450 to 470 as delivered. The original C class were builders numbers 42439 & 42440 delivered in 1907, 46036-42440 in 1909, 47731 in 1910, and 49205-49206 in 1911. Sub-class C-1 consisted of builders numbers 50940 & 50941 built in 1912, and 52985-52986 & 53291 completed in 1913. Builders numbers 54568 through 54570 arrived in 1914 as sub-class C-2 with weight increased to 238,500 lb (108.2 tonnes).[2]

Sub-class C-3

The last five Maine Central Pacifics were built with booster engines. Increasing cylinder diameter to 24 inches (610 mm) increased tractive effort to 36,500 lbf (162.4 kN) or 46,800 lbf (208.2 kN) with the booster. Enlarged tenders held 13 tons of coal and 9,100 US gal (34 m3) of water. Builders numbers 57885 through 57887 were delivered in 1917 with weight increased to 268,300 lb (121.7 tonnes). Building of new 4-6-2s was interrupted by World War I when the United States Railroad Administration (USRA) authorized construction of non-standard class O 4-6-0s because Maine Central Pacifics were so much smaller than USRA Light Pacifics. The final two class C engines were builders numbers 65554 and 65555 delivered in 1924.[3] Number 470 was preserved in Waterville, Maine after pulling the last Maine Central steam-powered train on 13 June 1954.[4]

Replacement

The last steam locomotives built for Maine Central were class D 4-6-4s numbered 701 and 702 from Baldwin Locomotive Works in 1930.[1] The Budd Company Flying Yankee train set and unstreamlined 600 horsepower (450 kW) oil-electric rail car number 901 arrived in 1935. EMD E7s numbered 705 through 711 began pulling main line passenger trains in 1946. Steam-generator-equipped road switchers pulled a declining number of branch line passenger trains from 1950 until Maine Central discontinued all passenger service in 1960.[5]

gollark: It does NOT allow random access.
gollark: Hmm, so, designoidal idea:- files have the following metadata: filename, last modified time, maybe permissions (I may not actually need this), size, checksum, flags (in case I need this later; probably just compression format?)- each version of a file in an archive has this metadata in front of it- when all the files in some set of data are archived, a header gets written to the end with all the file metadata plus positions- when backup is rerun, the system™️ just checks the last modified time of everything and sees if its local copies are newer, and if so appends them to the end; when it is done a new header is added containing all the files- when a backup needs to be extracted, it just reads the end, finds the latest versions and decompresses stuff at the right offsetThere are some important considerations here: it should be able to deal with damaged/partial files, encryption would be nice to have (it would probably work to just run it through authenticated AES-whatever when writing), adding new files shouldn't require tons of seeking, and it might be necessary to store backups on FAT32 disks so maybe it needs to be able of using multiple files somehow.
gollark: I have been pondering an osmarksarchiveformat™ because I dislike the existing ones somewhat. Specifically for backups and append-only-ish access. Thusly, thoughts on the design (crossposted from old esolangs)?
gollark: If you run too much current through beans they may vaporise/burn/etc.
gollark: You could make a mechanical computer from solidified beans.

References
  1. Robertson, Edwin B. Maine Central Steam Locomotives Edwin B. Robertson (1977) Westbrook, Maine pp.38-43&56
  2. Johnson, Ron (n.d.). Maine Central R.R. Mountain Division. 470 Railroad Club. p. 323.
  3. Alexander, Edwin P. (1950). American Locomotives. Bonanza Books. p. 136.
  4. Johnson, Ron (1985). The Best of Maine Railroads. Portland Litho. p. 140.
  5. Robertson, Edwin B. (1978). Maine Central Diesel Locomotives. Edwin B. Robertson. pp. 49, 61&70–73.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.