Friday, July 27, 2018

Friday Night Steam

What are all those controls for on a steam engine? Grab a cold one and watch!  :o)

Published on Nov 19, 2017
•A video guide that walks through and describes the functions of the various controls in the cab of Denver and Rio Grande Western (D&RGW) steam locomotive #491. Big thanks to Mike Spera for heading the restoration on this wonderful piece of American history. •The locomotive seen in the video is Denver and Rio Grande Western (D&RGW) mikado (2-8-2) #491, one of the largest narrow gauge locomotives ever created. It now runs at the Colorado Railroad Museum in Golden, Colorado. It has ~37,100 pounds of tractive effort, and weighs ~150 tons or ~302,000 pounds. It was built in 1928 by the D&RGW Burnham shops in Denver, Colorado using the boiler off of a standard gauge D&RGW 2-8-0. #491 is a pristine example of a locomotive perfectly suited for rugged, mountain climbing work. •Thanks to Erik Lindgren (@ColoradoRailPhotographer) for the great still images used in this video.

Denver & Rio Grande Western K-37
D&RGW SL 491 2008.jpg

Type and origin
References:Dimensions are as rebuilt unless noted
Power type Steam
Builder Baldwin Locomotive Works
Build date 1902
Rebuilder D&RGW Burnham Shops
Rebuild date 1928–1930
Number rebuilt 10

 • Whyte Original: 2-8-0
Rebuilt: 2-8-2
 • UIC 1′D1′ h2
Gauge Original: 4 ft 8 12 in (1,435 mm)
Rebuilt: 3 ft (914 mm)
Leading dia. Original: unknown
Rebuilt: 28 in (711 mm)
Driver dia. Original: 55 in (1,397 mm)
Rebuilt: 44 in (1,118 mm)
Trailing dia. Original: none
Rebuilt: 28 in (711 mm)
Wheelbase 29 ft (8.8 m)
Length 41.1 ft (12.5 m)
Width 10.4 ft (3.2 m)
Height Engine: 13.3 ft (4.1 m)
Tender: 13.5 ft (4.1 m)
Loco weight 183,920 pounds (83,420 kg)
Boiler pressure 200 psi (1.38 MPa)
Cylinders Two
Cylinder size 20 in × 24 in (508 mm × 610 mm)
Valve gear Walschaerts
Loco brake Air
Train brakes Air

Performance figures
Tractive effort 37,100 lbf (165 kN)

Operators DRGW, D&SNG, C&TS
Class D&RG: 190
D&RGW: C-41
after rebuild: K-37
Numbers 490–499
Locale Colorado and New Mexico
Retired 1955 (#496), 1962-1970
Disposition Eight preserved; two (#490, 496) scrapped


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