Banner
Navigation
loco-info.com
The reference for locomotives and railcars
Navigation
Random
Search
Compare
Settings

Navigation

Steam
Tender Locomotives with up to Two Coupled Axles
Tender Locomotives with Three Coupled Axles
0-6-0 “Six-coupled”
2-6-0 “Mogul”
2-6-2 “Prairie”
4-6-0 “Ten-wheeler”
4-6-2 “Pacific”
Alsace-Lorraine S 12
Atlanta & West Point class P-74
Atlantic Coast Line class P-5-B
Baden IV f
Baden IV h
Baltimore & Ohio class P-7
Bavarian S 3/6
Belgian Railway type 10
Boston & Maine class P-4
Boston & Maine classes P-1 and P-2
British Rail Standard class 7MT “Britannia”
Buenos Aires Pacific No. 2101 to 2112
Canadian Pacific class G3
Canadian Pacific class G5
Central RR of New Jersey classes G-1s to G-4s ( classes P-43, P-47 and P-52)
Central South African class 10
Central South African class 10-2
Chesapeake & Ohio class F-16
Chicago, Milwaukee, St. Paul & Pacific (Milwaukee Road) class F3
Chicago, Rock Island & Pacific (Rock Island) class P-40
Erie class K-5a and b
Federated Malay States class H
Federated Malay States class L
Federated Malay States classes K1 and K2
Federated Malay States classes O1 to O4
French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”
French State Railway (État) 231-501 to 783
German Federal Railway class 10
German Reichsbahn 07 1001
German Reichsbahn 18 201
German Reichsbahn class 01
German Reichsbahn class 0110
German Reichsbahn class 015
German Reichsbahn class 02
German Reichsbahn class 03
German Reichsbahn class 0310
German Reichsbahn class 04
German Reichsbahn H 02 1001
Grand Trunk class K-3
Great Western Railway No. 111 “The Great Bear”
Illinois Central class 1139
Imperial-Royal State Railways class 210
Imperial-Royal State Railways class 310
Indian Railways class WP
Indian Railways class XB
Italian State Railway class 690 II
Italian State Railway class 691
Japanese National Railways classes C59 and C60
Lehigh Valley class K-6b
Leopoldina No. 306 to 333
Little River Railroad No. 110
London & North Eastern Gresley class A4
London & North Eastern Gresley classes A1 and A3
London & North Eastern Peppercorn class A1
London, Midland & Scottish Coronation class
Louisville & Nashville class K-2
Maine Central classes C, C1 and C2
Maine Central classes C-3 and C-3B
Missouri Pacific class P-69
New York Central class K-3
New York Central class K-5
New Zealand Railways class AB
New Zealand Railways class Q (1901)
New Zealand Railways classes A and AD
Paris-Lyon-Méditerranée No. 6001, 6011 to 6030 and 6221 to 6285
Paris-Orléans No. 3701 to 3731
Paris-Orléans No. 4501 to 4600
Pennsylvania class K4s
Provincial de Santa Fe class XII
Rede de Viação Cearense class 400
Santa Fe class 3400
Saxon XVIII H
Soo Line classes H-3 and H-21 to H-23
South African class 5 “Enlarged Karoo”
South Manchurian Railway Pashiko class
South Manchurian Railway Pashina class
South Manchurian Railway Pashiro class
South Manchurian Railway Pashisa and Pashiha class
Southern Railway (UK) Merchant Navy class
Southern Railway (UK) West Country and Battle of Britain classes
Southern Railway (USA) class Ps-4
Tasmanian Government classes M and MA
US Railroad Administration Heavy Pacific
US Railroad Administration Light Pacific
Wabash class J-2
Western Australian Government Railways class E (1902)
Western Australian Government Railways classes P and Pr “River”
Western Australian Government Railways classes Pm and Pmr
Western Maryland class K-2
Württemberg C
4-6-4 “Hudson”, “Baltic”
Tender Locomotives with Four and More Coupled Axles
Tank Locomotives up to Two Coupled Axles
Tank Locomotives with Three Coupled Axles
Tank Locomotives Four and More Coupled Axles
Articulated and Bogie
Special Types
Electric
Diesel
Railcars and Multiple Units
Page views since 2023-01-26: 4655980
Buenos Aires Pacific No. 2101 to 2112
go back
Argentina | 1926
12 produced
Image of locomotive
Locomotive Magazine, June 1928

The numbers 2101 to 2112 were eleven three-cylinder Pacifics built by Armstrong Whitworth in 1926 for the Buenos Aires Pacific. The boiler had a relatively small superheater of only 460 square feet, what was normal for British-built locomotives. But the grate was large, since they were intended for heavy express service over the Transandine railway to Chile. The 661 miles between Buenos Aires and Mendoza were completed in 21 hours.

General
Built1926
ManufacturerArmstrong Whitworth
Wheel arr.4-6-2 (Pacific) 
Gauge5 ft 6 in (Indian broad gauge)
Dimensions and Weights
Length70 ft 6 in
Wheelbase35 ft 4 in
Rigid wheelbase13 ft 6 in
Total wheelbase61 ft 2 in
Empty weight179,928 lbs
Service weight205,520 lbs
Adhesive weight122,696 lbs
Total weight356,552 lbs
Axle load41,720 lbs
Water capacity7,026 us gal
Fuel capacity19,040 lbs (coal)
Boiler
Grate area42.3 sq ft
Firebox area188 sq ft
Tube heating area2,166.5 sq ft
Evaporative heating area2,354.5 sq ft
Superheater area460 sq ft
Total heating area2,814.5 sq ft
Power Plant
Driver diameter71 in
Boiler pressure175 psi
Expansion typesimple
Cylindersthree, 18 x 28 in
Power
Power sourcesteam
Estimated power1,500 hp (1,119 kW)
Starting effort28,510 lbf
Calculated Values
steam locomotive
express
last changed: 08/2025
Search
Legal Notice
About
GoFundMe
PayPal
Facebook
loadding loading...

We use cookies to save the following settings:

  • selected navigation structure
  • selected language
  • preferred units
  • spelling of railway company names

If you refuse the use of cookies, the settings will only be retained for the current session and will be reset to the default values the next time you visit the site.

Display of units

Here you can set the desired unit system for the technical data.

  • Metric: Lengths in meters, weights in tonnes, and volumes in cubic meters
  • Imperial (UK): Lengths in feet/inches, weights in long tons and volumes in imperial gallons
  • Imperial (US): Lengths in feet/inches, weights in pounds, and volumes in US gallons
  • Individual: Depends on the country of origin of each locomotive
Operator names

Here you can set the display of railway company names.

  • Short: Abbreviation or short form of the name
  • Standard: commonly used name, partially translated to English
  • Complete: full name in local language