CNW Class E-4
|CNW class E-4|
An E-4 at Chicago in 1942.
|Type and origin|
|Builder||American Locomotive Company|
|Serial number||68982–68989, 69028|
|UIC classification||2′C2′ h2|
|Gauge||4 ft 8 1⁄2 in (1,435 mm)|
|Driver diameter||84 in (2,134 mm)|
|Length||101 ft 9 3⁄4 in (31.03 m)|
|Weight on drivers||216,000 lb (98.0 tonnes)|
|Locomotive and tender
|791,500 lb (359.0 tonnes)|
|Water capacity||20,000 US gal (76,000 l; 17,000 imp gal)|
|Boiler pressure||300 lbf/in2 (2.07 MPa)|
|Firegrate area||90.7 sq ft (8.43 m2)|
|3,958 sq ft (367.7 m2)|
|Superheater area||1,884 sq ft (175.0 m2)|
|Cylinder size||25 in × 29 in (635 mm × 737 mm)|
|Tractive effort||36,050 lbf (160.36 kN)|
|Operator(s)||Chicago and North Western Railway|
They were built to haul the road's famous "400" express passenger trains, but before they were even delivered the railroad's management decided that streamlined steam was the wrong direction and instead placed orders with General Motors Electro-Motive Division for new diesel locomotives. The displaced E-4s instead worked other trains until they were withdrawn from service in 1953. All were scrapped.
The nine E-4s were almost identical in specification and purpose to the Milwaukee Road's six class F7 locomotives, and they were built by the same builder at the same time, yet they were different in almost every detail of design.
- Speedy from the animated children's television series Chuggington is based on the CNW Class E-4 minus the tender.
Other CNW steam locomotives
- CNW Class D 4-4-2 – A major workhorse of the C&NW, some were used on the Minnesota 400.
- CNW Class E 4-6-2 – Some converted to "ES" class with similar shrouding to the E-4. The ES engines succeeded Class D locomotives on the Minnesota 400.
- CNW Class E-2 4-6-2 – Twelve locomotives, four of which were converted to "E-2-a" class and were the original locomotives for the Twin Cities to Chicago 400 before being replaced by EMD E3 diesel units. The remaining eight were converted to "E-2-b" locomotives.
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