Chihuahua & Pacific / Cumberland & Pennsylvania / Coahuila & Pacific / Canadian Pacific 2-8-0 "Consolidation" Type Locomotives

Locobase doesn't know much about this Consolidation design - even the source of the data is somewhat of a mystery. But the data themselves contain at least one odd feature: the short stroke for a 2-8-0 in particular or a compound in general. Also, this engine was relatively small and light for a compound 2-8-0 - the smallest of that particular combination in Locobase.

Class 1621 (Locobase 5373)

Data from a table in the July 1906 American Engineer and Railroad Journal (AERJ).

This locomotive is similar enough to the M4 described in AERJ a year later, yet significantly different enought, to represent a prototype. Note the odd superheater flue diameter. Changing to a true Schmidt superheater installation that had fewer, but larger-diameter flues was probably the last step to series production. See Locobase 4516.

Class 30 (Locobase 9628)

Data from 1899 Brooks Catalogue.

Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004.

Works #2977-2980.

This troubled railroad took decades to finish, but from the start they were buying North American locomotives. This quartet of 2-8-0s represented a relatively small, but typical design.

Class G-31 (Locobase 9490)

Data from NdeM 1946 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

Basic transportation for freight traffic in Mexico. This pair of Consolidations were produced by Baldwin in February 1902 (works 20078-20079). When the Mexican Central took over the C & P in 1908, the pair was renumbered 937-938 and sold to the NdeM as 484-485. Renumbered 1365 in 1930, 20078 was scrapped in 1931. 20079 lasted much longer, not leaving service until 1957.

Class K (Locobase 6570)

Data from 1936 C & P locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive collection.

The C & P was a short line in Maryland's Allegany County that moved coal to the Mt Savage junction with the Baltimore & Ohio. Patrick Stakem of the Western Maryland Historical Society writes that this small railroad established a competent locomotive-building facility at its roundhouse in Mt Savage, Maryland.

Stakem's account shows that this unusual capability resulted from the arrival of James Milholland as director of the locomotive shop. Milholland was even then a well-known locomotive superintendent who had worked on the Philadelphia & Reading. The C & P shops took on several rebuilding projects before offering a catalogue of new locomotives for the railroad and for export.

At the turn of the century, Mt Savage supplied two classes of Consolidations for the C & P. This pair represented the smaller design; the Ls (see Locobase 6571) the larger.

It eventually came under the control of the Western Maryland and the shops

Class L (Locobase 6571)

Data from 1936 C & P locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive collection.

The C & P was a short line in western Pennsylvania that had its roundhouse in Mt Savage, Maryland; see Locobase 6570 for a more complete history. The L series seems to have been an enlargement of the two Ks that were delivered 5 years earlier, although the firebox heating surface remained about the same.

Class M4a-h (Locobase 4516)

Data from a table in the July 1907 American Engineer and Railroad Journal. Additional data from 1947 Canadian Pacific Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection.

Built over 6 years by Alco-Schenectady, Baldwin, Canadian Loco Works, Canadian Pacific shops, Montreal LW. As they were modified over time, some received 2 more flues, but otherwise the class was little changed except to increase overall weigth.

Retired over a long period of time from 1935-1961.

Class N2 (Locobase 4525)

http://www.kettlevalleyrail.org/locomotive.htm (23 July 1923) for areas, cylinder dimensions, confirmed by data from 1947 Canadian Pacific Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection.

Originally delivered as the N3 class (3800-3960) over a five-year period by Canada Foundry, Canadian Loco Works, Canadian Pacific, Montreal. Retired from 1954-1963.

In commenting on the challenge of firing the D10 4-6-0s, Bill Yeats, in his article My FIRST TRIP AS THE 'ENGINEER' on the West Coast Railway Association's website http://www.wcra.org/features/engineer.htm (3 Dec 2004), says of the N2 class: "I might add that the N2 class 36 and 37 hundred consolidation engines were even harder to fire because they had about the same sized boiler with the same shallow firebox but were supplying superheated steam to larger cylinders with a longer piston stroke."

Class SE 5 (Locobase 4083)

Reported in the 29 Nov 1901 Railroad Gazette. May be class M3b, which later had numbers 3350-3391 and came from Schenectady in 1901-1904. This class retired gradually over a 20-year period beginning in 1930.

Specifications
Class		1621	30	G-31	K	L	M4a-h	N2	SE 5
Locobase ID	3153	5373	9628	9490	6570	6571	4516	4525	4083
Railroad	Canadian Pacific	Canadian Pacific	Chihuahua & Pacific	Coahuila & Pacific	Cumberland & Pennsylvania	Cumberland & Pennsylvania	Canadian Pacific	Canadian Pacific	Canadian Pacific
Whyte	2-8-0	2-8-0	2-8-0	2-8-0	2-8-0	2-8-0	2-8-0	2-8-0	2-8-0
Road Numbers	673	1621	30-33	6-7 / 937-38 / 1365, 1367	21-22	23-24, 26-33	3400-3565	3600-3760	1201
Gauge	Std	Std	Std	Std	Std	Std	Std	Std	Std
Builder	Montreal LW	Alco-Schenectady	Brooks	Burnham, Williams & Co	C & P	C & P	several	several	Alco
Year	1898	1904	1898	1902	1899	1904	1904	1909	1901
Valve Gear		Walschaert	Stephenson	Stephenson	Stephenson	Stephenson	Walschaert		Stephenson
	Locomotive Length and Weight
Driver Wheelbase	14.50'	15.83'	14.50'	15.33'	16.50'	16.33'	15.83'	16.50'	15.67'
Engine Wheelbase	22.50'	24.37'	22'	23.67'	22.71'	23.33'	24.37'	25.42'	23.59'
Ratio of driving wheelbase to overall engine wheebase	0.64	0.65	0.66	0.65	0.73	0.70	0.65	0.65	0.66
Overall Wheelbase (engine & tender)	49.54'	53.35'	47'	304'	53.83'	53.83'	53.35'	55.97'	51.67'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers	126300 lbs	164000 lbs	116000 lbs	156000 lbs	132000 lbs	156000 lbs	178000 lbs	216000 lbs	140500 lbs
Engine Weight	142650 lbs	186525 lbs	130000 lbs	172000 lbs	149600 lbs	176000 lbs	202000 lbs	240000 lbs	159500 lbs
Tender Light Weight		125700 lbs	80000 lbs	102000 lbs	94400 lbs	96000 lbs	127000 lbs	139000 lbs	114000 lbs
Total Engine and Tender Weight	0	312225 lbs	210000 lbs	274000 lbs	244000 lbs	272000 lbs	329000 lbs	379000 lbs	273500 lbs
Tender Water Capacity	3840 gals	5000 gals	4000 gals	6000 gals	5000 gals	5000 gals	6000 gals	6000 gals	5000 gals
Tender Fuel Capacity (oil/coal)		12 tons	8 tons	3103 gals	9 tons	9 tons	12 tons	12 tons	10 tons
Minimum weight per yard of rail on which locomotive could run	52.62 lb rail	68.33 lb rail	48.33 lb rail	65 lb rail	55 lb rail	65 lb rail	74.17 lb rail	90 lb rail	58.54 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	51"	57"	50"	55"	50"	50"	57"	63"	61"
Boiler Pressure	200 psi	200 psi	180 psi	180 psi	160 psi	200 psi	200 psi	190 psi	200 psi
Cylinders (dia x stroke)	20.25" x 26" (1)	21" x 28"	18" x 26"	21" x 28"	19" x 26"	21" x 26"	21" x 28"	23" x 32"	22" x 28" (1)
Low Pressure Cylinders (dia x stroke)	32" x 26"	" x "	" x "	" x "	" x "	" x "	" x "	" x "	35" x 28"
Tractive Effort	25377 lbs	36827 lbs	25777 lbs	34350 lbs	25530 lbs	38984 lbs	36827 lbs	43395 lbs	27072 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.98	4.45	4.50	4.54	5.17	4.00	4.83	4.98	5.19
	Heating Ability
Firebox Area	151 sq. ft	166 sq. ft	150 sq. ft	188 sq. ft	133 sq. ft	137 sq. ft	190 sq. ft	191 sq. ft	134.37 sq. ft
Grate Area	32.70 sq. ft	43.80 sq. ft	24.30 sq. ft	33.60 sq. ft	37 sq. ft	37 sq. ft	43.70 sq. ft	49.50 sq. ft	43.64 sq. ft
Evaporative Heating Surface	1996	2660	1807	2423	2103	2590	2381	2316	2219
Superheating Surface		340					310	602
Combined Heating Surface	1996	3000	1807	2423	2103	2590	2691	2918	2219
Evaporative Heating Surface/Cylinder Volume	411.90	236.98	235.97	215.86	246.48	248.49	212.12	150.51	360.25
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	6540	8760	4374	6048	5920	7400	8740	9405	8728
Same as above plus superheater percentage	6540	9752.80	4374	6048	5920	7400	9746.84	11345.31	8728
Same as above but substitute firebox area for grate area	30200	36962.67	27000	33840	21280	27400	42377.55	43776.83	26874
Power L1	3864.74	11087.21	5008.73	4943.54	4325.62	5236.87	10361.04	11264.99	3770.46
Power MT	269.84	596.17	380.77	279.45	288.98	296.03	513.31	459.91	236.65