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Pennsylvania class E1
United States | 1899 | 3 produced
collection Taylor Rush

The Pennsylvania Railroad wanted to accommodate a larger grate area in Atlantic locomotives in order to be able to burn anthracite and fragments thereof. For this purpose, three locomotives were procured on a trial basis, which had a combination of Wootten and Belpaire fireboxes and were designed as Camelbacks. The special shape of the firebox and the combustion chamber resulted in 218 square feet of direct heating surface and a grate surface of nearly 70 square feet. A visual highlight was the common cover of the steam dome and the sandpit, which looked like a huge steam dome

The approximately 410-ton express trains between Philadelphia and Atlantic City could be transported over longer sections at an average speed of around 55 mph. With only 260 tons on the hook, an average speed of 70 mph was achieved on the 58 miles long, slightly descending section from Camden to Atlantic City.

Ultimately, however, the PRR was bothered by the fact that the engine driver and the fireman had difficulty communicating. Hundreds of other Atlantics were procured as a result, but all of them with a conventional firebox and cab at the rear end. The three engines were sold to the Long Island Railroad in 1901 and scrapped in 1911.

General
Built1899
ManufacturerAltoona
Axle config4-4-2 (Atlantic) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase27 ft 9 ín
Fixed wheelbase7 ft 5 in
Service weight173,450 lbs
Adhesive weight101,550 lbs
Total weight263,450 lbs
Axle load50,775 lbs
Water capacity4,000 us gal
Fuel capacity12,000 lbs (coal)
Power
Power sourcesteam
Estimated power1,400 hp (1,044 kW)
Optimal speed42 mph
Starting effort21,477 lbf
Power Plant
Driver diameter80 in
Boiler pressure185 psi
Expansion typesimple
Cylinderstwo, 20 1/2 x 26 in
Boiler
Grate area69.2 sq ft
Firebox area218 sq ft
Tube heating area2,102 sq ft
Evaporative heating area2,320 sq ft
Total heating area2,320 sq ft
Calculated Values
steam locomotive
express
camelback
last changed: 07/2022
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