Canadian National 6400

Canadian National No. 6400
The Canadian National No. 6400 on static display inside the Canada Science and Technology Museum
Type and origin Power type Steam Builder Montreal Locomotive Works Serial number No. 68715 Model U-4-a Class “6400 Series”
Specifications Configuration: ​  • Whyte 4-8-4 Gauge 4 ft 8+1⁄2 in (1.435 m) standard gauge Driver dia. 77 in (2,000 mm) Length 95 ft 1 in (28.98 m) Loco weight 379,800 lb (172.3 t) Fuel type Coal Fuel capacity 40,000 lb (18 t) Superheater: ​  • Heating area 3,861 sq ft (358.7 m2) Cylinder size 24 in × 30 in (610 mm × 760 mm)
Performance figures Maximum speed 90–110 mph (140–180 km/h) Tractive effort 52,475 lbf (233.42 kN)
Career Operators Canadian National Retired June, 1960 (revenue service) Withdrawn June, 1967 (excursion service) Current owner Canada Science and Technology Museum Disposition Eventually donated for preservation to the National Museum of Science and Technology in Ottawa around June of 1967

Canadian National Railway No. 6400 is a preserved 4-8-4 “Confederation” or “Northern” type locomotive built in June 1936 for the Canadian National Railway (CNR).

It was the first member of the five streamlined U-4-a Class “6400 Series” engines to be delivered, which were the first streamlined steam locomotives in Canada. 6400 in particular is the most famous and notable, having pulled the 1939 royal train, and participating as an attraction at the New York World's Fair the same year. The locomotive was withdrawn sometime in 1960, with the remaining U-4-a locomotives being retired by 1961.

The locomotive was eventually donated and put up on static display in the National Museum of Science and Technology in Ottawa, where it has been preserved since 1967.