D&RG Class L-62

The L-62s were a class of eight 2-6-6-2 steam locomotives built for the Rio Grande by the American Locomotive Company in 1910. They were used on helper service in Soldier Pass and Tennessee Pass. 
They were delivered as saturated-steam locomotives however, they were later superheated. The usual exchange of small tubes for larger flues dropped the total evaporative heating surface area both because of the lower number but the smaller diameter (2" vs 2 1/4" in the original boiler) of each tube. They retained the short combustion chamber that contributed 40 sq ft (3.72 sq m) to the firebox heating surface area and the mixture of 10" (254 mm) piston valves for the HP cylinders and slide valves for the LP cylinders. The updated HP cylinders gained 1/2" (12.7 mm) in diameter.
Originally they were known as D&RG Class 340 but were changed to the D&RG Class L-62 in 1924 and were all renumbered. Withdrawals of the class started in 1946 and all were scrapped by 1952. None survived to preservation. 
==Stock list==
Loco No.	Build date	Operator(s) 	Manufacturer 	Image	Notes
3300 	1910 	Denver & Rio Grande Western Railroad	American Locomotive Company	 	Built as D&RG Class 340 No. 1050, changed to D&RGW 3300 in 1924. Scrapped July 1950.
3301 	1910 	Denver & Rio Grande Western Railroad	American Locomotive Company	 	Built as D&RG Class 340 No. 1051, changed to D&RGW 3301 in 1924. Scrapped July 1950.
3302 	1910 	Denver & Rio Grande Western Railroad	American Locomotive Company	 	Built as D&RG Class 340 No. 1052, changed to D&RGW 3302 in 1924. Scrapped August 1952.
3303 	1910 	Denver & Rio Grande Western Railroad	American Locomotive Company	 	Built as D&RG Class 340 No. 1053, changed to D&RGW 3303 in 1924. Scrapped October 1950.
3304 	1910 	Denver & Rio Grande Western Railroad	American Locomotive Company	 	Built as D&RG Class 340 No. 1054, changed to D&RGW 3304 in 1924. Scrapped October 1947.
3305 	1910 	Denver & Rio Grande Western Railroad	American Locomotive Company	 	Built as D&RG Class 340 No. 1055, changed to D&RGW 3305 in 1924. Scrapped 1946.
3306 	1910 	Denver & Rio Grande Western Railroad	American Locomotive Company	 	Built as D&RG Class 340 No. 1056, changed to D&RGW 3306 in 1924. Scrapped March 1951.
3307 	1910 	Denver & Rio Grande Western Railroad	American Locomotive Company	 	Built as D&RG Class 340 No. 1055, changed to D&RGW 3307 in 1924. Scrapped 1946.
== Gallery ==
File:Drgw-3307-eureka-5-jul-1940-r-h-kindig-XL.jpg
Category:Rio Grande locomotives
Category:Scrapped steam locomotives
Category:Scrapped locomotives
Category:Steam locomotives
Category:Locomotives
Category:Tender locomotives
Category:American locomotives
Category:American steam locomotives
Category:ALCO locomotives
Category:Built in 1910
Category:Standard gauge locomotives
Category:Standard gauge locomotives of the United States
Category:2-6-6-2 locomotives
Category:2-6-6-2 steam locomotives
Category:Articulated locomotives