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Canadian National class S-1
Canada | 1913 | 327 produced
No. 3254 in June 2011 in “Steamtown” Scranton, Pennsylvania
No. 3254 in June 2011 in “Steamtown” Scranton, Pennsylvania
Chris Light

The S-1 was the standard freight locomotive of all Canadian National predecessors from 1913 onwards. It was a Mikado with 63-inch drivers and 27 by 30-inch cylinders. The subclasses S-1-a to e were used by the Canadian Government Railways and were only built by Canadian manufacturers. The Grand Trunk operated classes S-1-f to h, which also came from US manufacturers. After these batches were built until 1918, it was not until 1926 that the CN had two more S-1-j built. Three locomotives were preserved, of which only 3254 was operational until 2012. The 3377 had before been dismantled to provide spare parts for 3254.

VariantS-1-a and bS-1-c and eS-1-f
General
Built1913-1926
ManufacturerCanadian Locomotive Co., Montreal Locomotive Works, ALCO, Baldwin, Canadian National
Axle config2-8-2 (Mikado) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length78 ft 5 in
Wheelbase35 ft 1 in
Fixed wheelbase16 ft 6 in
Service weight276,000 lbs272,100 lbs
Adhesive weight205,000 lbs204,700 lbs
Total weight453,100 lbs449,200 lbs
Axle load51,250 lbs51,175 lbs
Water capacity7,500 us gal
Fuel capacity28,000 lbs (coal)
Power
Power sourcesteam
Estimated power2,275 hp (1,696 kW)2,300 hp (1,715 kW)
Optimal speed28 mph
Starting effort51,637 lbf53,113 lbf51,637 lbf
Power Plant
Driver diameter63 in
Boiler pressure175 psi180 psi175 psi
Expansion typesimple
Cylinderstwo, 27 x 30 in
Boiler
Grate area56.5 sq ft
Firebox area248.8 sq ft289 sq ft
Tube heating area3,370.2 sq ft3,112.2 sq ft3,116 sq ft
Evaporative heating area3,619 sq ft3,361 sq ft3,405 sq ft
Superheater area769 sq ft804 sq ft
Total heating area4,388 sq ft4,130 sq ft4,209 sq ft
Calculated Values
steam locomotive
freight
last changed: 11/2023
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