HO - Steam Loco Kits
USRA Mountain

The light Mountains were the last of the USRA line to be completed. In May of 1919 they were delivered by Alco, with Baldwin soon following suit.

Many of the parts were interchangeable with other USRA engines. Cylinders were 27" x 30", the drivers were 69" in diameter, boiler pressure was 200 pounds, the locomotive weighed 327,000 pounds, and these engines had a tractive force of 53,900 pounds. The running gear for the USRA light is the same as on the heavy Mountain except for the weight of springs and certain other small parts.

Copies of the light model began to be produced in 1920 by Alco. Feedwater heaters were now added to the original version, along with copies of the original. Southern valve gears, Vanderbilt tenders, small compressors on the engine (an unusual sight on a large engine), front-end throttle, exhaust steam injector, and a second sandbox were all new features that would be found in later years on copies of the USRA 4-8-2 Light.

There were only 52 USRA Heavy Mountains built. Alco and Baldwin produced these locomotives for C&O, N&W, and FEC from 1918 to 1926. These engines had cylinders that were 28" x 32". Using 69"drivers, the same wheel spacing as the light Mountain, 200 pounds of pressure, and weighing 327,000 pounds a tractive force of 58,000 pounds was exerted. The boilers used on this model were the same as those used on the USRA 2-10-2, but since its drivers were larger the boiler was mounted 5" higher on the USRA Mountain.

Some additions to later versions of the heavy Mountain included: a pump, low headlight, cantilever bell hanger arrangement, Worthington SA feedwater heater, compressors, a long tender, front-end throttle, footholds, and some FEC's were installed with Elesco heaters.

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Prototype 
Specifications		 Model 
Specifications
Cylinders 27" x 30"          
Steam Pressure 200 lbs.          
Tractive Force 53,900 lbs
Engine weight in working order 327,000 lbs. 		 Length with Tender 12 1/4"
Height 2 1/8"
Weight 2 lbs 5 oz.
Minimum radius 18"
Power Bowser DC-71
Drivers 69"

Kit Photos

Assembly Instructions