Chicago, Burlington and Quincy O-5 class

Specifications
Specifications
Configuration:;
• Whyte	4-8-4
• UIC	2′D2′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	37 in (940 mm)
Driver dia.	74 in (1,880 mm)
Trailing dia.	43 in (1,092 mm)
Wheelbase	Loco & tender: 90.69 ft (27.64 m)
Length	103 ft 3+1⁄8 in (31.47 m) ( O-5) ; 107 ft 3⁄8 in (32.62 m) (O-5A/B)
Width	10 ft 7 in (3.23 m)
Height	16 ft 2 in (4.93 m)
Axle load	69,340 lb (31,450 kilograms; 31.45 metric tons) (O-5) ; 69,757.5 lb (31,641.5 kilograms; 31.6415 metric tons) (O-5A/B)
Adhesive weight	272,000 lb (123,000 kilograms; 123 metric tons) (O-5) ; 281,410 lb (127,650 kilograms; 127.65 metric tons) (O-5A/B)
Loco weight	454,600 lb (206,200 kilograms; 206.2 metric tons) (O-5) ; 476,050 lb (215,930 kilograms; 215.93 metric tons) (O-5A/B)
Tender weight	337,000 lb (153,000 kilograms; 153 metric tons) (O-5) ; 362,000 lb (164,000 kilograms; 164 metric tons) (O-5A/B)
Total weight	791,600 lb (359,100 kilograms; 359.1 metric tons) (O-5) ; 838,050 lb (380,130 kilograms; 380.13 metric tons) (O-5A/B)
Fuel type	Coal ; Fuel oil (O-5B)
Fuel capacity	24 t (24 long tons; 26 short tons) (O-5) ; 27 t (27 long tons; 30 short tons) (O-5A) ; 7,300 US gal (28,000 L; 6,100 imp gal) (O-5B)
Water cap.	18,000 US gal (68,000 L; 15,000 imp gal)
Firebox:
• Grate area	106.50 sq ft (9.894 m2)
Boiler pressure	250 lbf/in2 (1.72 MPa)
Heating surface:
• Firebox	439 sq ft (40.8 m2) (O-5) ; 433 sq ft (40.2 m2) (O-5A/B)
Superheater:;
• Heating area	2,403 sq ft (223.2 m2)
Cylinders	Two
Cylinder size	28 in × 30 in (711 mm × 762 mm)
Valve gear	Baker
Valve type	Piston valves

Type and origin
Type and origin
Power type	Steam
Builder	Baldwin Locomotive Works, CB&Q
Serial number	61443-61444, 61496-61499, 61522-61523,
Build date	August-October 1930, 1936-1940
Total produced	36

Chicago Burlington and Quincy O-5 class
Chicago Burlington and Quincy O-5 class
	Chicago, Burlington and Quincy Railroad 5633 in Douglas, WY, USA. Built 1940 until 1956 in service, moved to Douglas in 1962
Power type
Type and origin
Power type	Steam
Builder	Baldwin Locomotive Works, CB&Q
Serial number	61443-61444, 61496-61499, 61522-61523,
Build date	August-October 1930, 1936-1940
Total produced	36
Configuration:;
Specifications
Configuration:;
• Whyte	4-8-4
• UIC	2′D2′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	37 in (940 mm)
Driver dia.	74 in (1,880 mm)
Trailing dia.	43 in (1,092 mm)
Wheelbase	Loco & tender: 90.69 ft (27.64 m)
Length	103 ft 3+1⁄8 in (31.47 m) ( O-5) ; 107 ft 3⁄8 in (32.62 m) (O-5A/B)
Width	10 ft 7 in (3.23 m)
Height	16 ft 2 in (4.93 m)
Axle load	69,340 lb (31,450 kilograms; 31.45 metric tons) (O-5) ; 69,757.5 lb (31,641.5 kilograms; 31.6415 metric tons) (O-5A/B)
Adhesive weight	272,000 lb (123,000 kilograms; 123 metric tons) (O-5) ; 281,410 lb (127,650 kilograms; 127.65 metric tons) (O-5A/B)
Loco weight	454,600 lb (206,200 kilograms; 206.2 metric tons) (O-5) ; 476,050 lb (215,930 kilograms; 215.93 metric tons) (O-5A/B)
Tender weight	337,000 lb (153,000 kilograms; 153 metric tons) (O-5) ; 362,000 lb (164,000 kilograms; 164 metric tons) (O-5A/B)
Total weight	791,600 lb (359,100 kilograms; 359.1 metric tons) (O-5) ; 838,050 lb (380,130 kilograms; 380.13 metric tons) (O-5A/B)
Fuel type	Coal ; Fuel oil (O-5B)
Fuel capacity	24 t (24 long tons; 26 short tons) (O-5) ; 27 t (27 long tons; 30 short tons) (O-5A) ; 7,300 US gal (28,000 L; 6,100 imp gal) (O-5B)
Water cap.	18,000 US gal (68,000 L; 15,000 imp gal)
Firebox:
• Grate area	106.50 sq ft (9.894 m2)
Boiler pressure	250 lbf/in2 (1.72 MPa)
Heating surface:
• Firebox	439 sq ft (40.8 m2) (O-5) ; 433 sq ft (40.2 m2) (O-5A/B)
Superheater:;
• Heating area	2,403 sq ft (223.2 m2)
Cylinders	Two
Cylinder size	28 in × 30 in (711 mm × 762 mm)
Valve gear	Baker
Valve type	Piston valves
Maximum speed
Performance figures
Maximum speed	Over 75 mph (121 km/h)
Power output	4,100 hp (3,100 kW)
Tractive effort	67,541 lbf (300.44 kN) ; 80,741 lbf (359.15 kN) with booster
Factor of adh.	4.03 (O-5) ; 4.13 (O-5A/B)
Operators
Career
Operators	Chicago, Burlington and Quincy
Class	O-5 ; O-5A ; O-5B
Numbers	5600–5635
Retired	Mid to late 1950s
Preserved	Four preserved (Nos. 5614, 5629, 5631 and 5633)
Disposition	Nos. 5614, 5629, 5631 and 5633 on display, remainder scrapped

The Chicago Burlington and Quincy O-5 was a class of 36 4-8-4 "Northern" type steam locomotives built by the Baldwin Locomotive Works in 1930 and the CB&Q between 1936 and 1940 and operated by the CB&Q until the late 1950s.

The locomotives saw service pulling both freight and passenger trains and four have been preserved, all of which are on display.

History

With an increase of traffic on the CB&Q, the railroad needed more powerful locomotives to pull the heavier loads and increased number of cars hauled.^[1] In 1930, the railroad ordered eight 4-8-4 locomotives (Nos. 5600-5607) from the Baldwin Locomotive Works and classified them as O-5.^[2] The CB&Q were satisfied with the locomotives and lead the railroad to build an additional twenty-eight 4-8-4 locomotives classed as O-5A in its own West Burlington, Iowa shops. Of the first eight O-5s, the first had fireboxes burning lignite coal while the last two took bituminous coal. No. 5607 had a booster that added 13,200 lbs (5,987 kg) tractive effort. One of the locomotives was reported pulling an 82 car mail train on October 17, 1944.^[3] Nos. 5600, 5602, 5604, 5605 and 5606 were fitted with Security circulators and reclassified O-5A. Between 1936 and 1940, the CB&Q built their own versions of the O-5 following the success of the class and were classified as O-5A. Nos. 5609, 5618, 5619, 5620 were fitted with Security circulators and 5610 received thermic syphons. The last 15 O-5s (nos. 5621-5635) were fitted with roller bearings on every axle, lightweight rods, all-weather vestibule cabs and a solid pilot. Nos. 5614, 5620, 5626, 5627, 5629, and 5632 were converted to burn oil later in their service lives and were reclassified as O-5B.

Between the mid and late 1950s, all of the O-5s have been retired from revenue service.^[4] After being retired from revenue service, No. 5632 was brought out of retirement and was used to haul excursions for the CB&Q steam program^[5]^[6] until November 1, 1964, when it hauled its last CB&Q excursion and was due for an overhaul. However, by 1966 the railroad got a new president, Louis W. Menk, who ended the program and the repairs on 5632 were halted. The locomotive was sold to caretaker, Richard Jensen, who moved it to the Chicago and Western Indiana Roundhouse for storage. In 1969, the locomotive was moved to a scrapyard, where the locomotive derailed on a switch and it was subsequently scrapped in November 1972.^[7]^[8]

Preservation

Four of the Burlington Route's "Northerns" have been preserved, all of which are of the O-5A/B batch.

#5614 is on display at Patee Park in St. Joseph, Missouri.^[9]
#5629 is on display at the Colorado Railroad Museum in Golden, Colorado.^[1]
#5631 is on display at a depot in Sheridan, Wyoming.^[10]
#5633 is on display at the Douglass Railroad Interpretive Center in Douglas, Wyoming.^[11]

Roster

Number	Baldwin serial number	Date built	Disposition	Notes
5600	61443	August 1930	Scrapped 1960.
5601	61444	August 1930	Sold for scrap.
5602	61496	September 1930	Sold for scrap.
5603	61497	September 1930	Sold for scrap.
5604	61498	September 1930	Sold for scrap.
5605	61499	September 1930	Sold for scrap.
5606	61522	October 1930	Sold for scrap.
5607	61523	October 1930	Sold for scrap.	Received booster that added 13,200 lbs of tractive effort.
5608	N/A	September 1936	Sold for scrap.
5609	N/A	September 1936	Sold for scrap.
5610	N/A	October 1936	Sold for scrap.
5611	N/A	June 1937	Sold for scrap.
5612	N/A	June 1937	Sold for scrap.
5613	N/A	July 1937	Sold for scrap.
5614	N/A	July 1937	Retired September 1957, on display in a city park in St. Joseph, Missouri.	Converted to oil burning O-5B.
5615	N/A	August 1937	Sold for scrap.
5616	N/A	August 1937	Sold for scrap.
5617	N/A	September 1937	Sold for scrap.
5618	N/A	October 1937	Sold for scrap.
5619	N/A	October 1937	Sold for scrap.
5620	N/A	October 1937	Scrapped in 1966.^[12]	Converted to oil burning O-5B.
5621	N/A	July 1938	Sold for scrap.
5622	N/A	August 1938	Sold for scrap.
5623	N/A	August 1938	Sold for scrap.
5624	N/A	September 1938	Sold for scrap.
5625	N/A	March 1940	Sold for scrap.
5626	N/A	April 1940	Sold for scrap.	Converted to oil burning O-5B.
5627	N/A	April 1940	Sold for scrap.	Converted to oil burning O-5B.
5628	N/A	May 1940	Sold for scrap.
5629	N/A	June 1940	Retired 1956 in Lincoln, Nebraska, on display at the Colorado Railroad Museum in Golden, Colorado.	Converted to oil burning O-5B.
5630	N/A	June 1940	Sold for scrap.
5631	N/A	July 1940	On display at a depot in Sheridan, Wyoming.
5632	N/A	August 1940	Scrapped after excursion service.	Converted to oil burning O-5B.
5633	N/A	August 1940	Retired 1956, on display at the Douglas Railroad Interpretive Center in Douglas, Wyoming.
5634	N/A	September 1940	Sold for scrap.
5635	N/A	October 1940	Sold for scrap.

References

^ ^a ^b Colorado Railroad Museum. "Chicago, Burlington & Quincy Locomotive No. 5629" (PDF).
^ Corbin & Kerka (1960), p. 120.
^ Carson, Mel (March 13, 2005). "[CBQ] 82 Car Mail Train on CB&Q in 1944". CBQ mailing list archive. message includes a transcription of: "82-Car Mail Train". Trains. November 1944. p. 4.
^ "Chicago, Burlington & Quincy 4-8-4 "Northern" Locomotives in the USA". SteamLocomotive.com.
^ Guise, Byron E. (June 9, 1960). "Romance Of Railroading Attracts Many Railfans". The Marysville Advocate. Marysville, KS. p. 9 – via Newspapers.com.
^ Schilling, Wallace (September 13, 1963). "If You Like To Travel By Train". Chattanooga Daily Times. p. 14 – via Newspapers.com.
^ "Richard Jensen and the Story of CB&Q 4960, 4963, 5632 and GTW 5629". SteamLocomotive.com.
^ Dyrek, Thomas (April 15, 2021). "A Passion for Steam - Part Two". The Trackside Photographer. Retrieved April 16, 2021.
^ "CBQ O-5a #5614". rgusrail.com. Retrieved June 5, 2021.
^ "CBQ O-5A #5631". rgusrail.com. Retrieved June 5, 2021.
^ "CBQ O-5A #5633". rgusrail.com. Retrieved June 5, 2021.
^ "CB&Q Northern #5620". www.rrpicturearchives.net. Retrieved July 29, 2021.

History

Preservation

Roster

References

Further reading