The Pennsylvania Railroad's class A5s was the most powerful class of 0-4-0 steam locomotives. The Pennsylvania Railroad built 47 in its Juniata Shops between 1916–1924. They were all retired by 1957. One is preserved at the Railroad Museum of Pennsylvania.

2025年3月13日 · PRR 643 - assigned to the following - (G), H1, B4a, and finally A5s. Hope that helps!! THAT number 643 was built by PRR's Altoona Shops in 1901 and (according to J. David Conrad's published info) was later sold to the Central Iron & Steel Company in Harrisburg, PA.

The PRR's original locomotive classification system was in force between 1867 and 1895. Under this system, each significant locomotive type was assigned a different class letter even if the wheel arrangements were the same. To illustrate this, classes A, B and C were all 4-4-0 type locomotives but with differing specifications.

2003年2月16日 · At the time of the U class's introduction, these were regarded as heavy-service switchers. Like most PRR designs, these burned fuel in Belpaire fireboxes that were scarcely visible in the large cabs. Virtually all were converted to A-3a saddle tank engines, which saw the removal of the double-bogie slopeback tender.

The class A5 were a class of 0-4-0 switcher steam locomotives built by Altoona Works for the Pennsylvania Railroad from 1916 to 1924. The A5's were a development of Pennsy's A class, which started in 1885 with the A1 and A2, formerly the Q class. Only one member of the class No. 94, has survived into preservation.

2019年7月7日 · PRR 94 Altoona Works A5s 0-4-0 Reportedly, PRR 94 was built in 1917 by Altoona Works as a class A5s, builders number 3191. One of the heaviest 0-4-0’s ever built. The Pennsylvania Railroad was keen on this wheel arrangement due to complex street and tight industrial trackage across its broad network.

2020年6月8日 · The A5s was basically the largest 0-4-0 built, mainly for street, industrial, and dockside switching duty where the wheelbase of an 0-6-0 was too long.

2019年9月28日 · The PRR Class A5s were the largest 0-4-0 switchers ever built and represented the PRR's propensity to beef up existing locomotive types as opposed to investing in unproven technology. Built into the 1920's, the A5s' were an absolute monster with 38 sq ft of grate area, power reverse and superheating .

The Pennsylvania Railroad's class A5s was the most powerful class of 0-4-0 steam locomotives. The Pennsylvania Railroad built 47 in its Juniata Shops between 1916–1924. They were all retired by 1957. One is preserved at the Railroad Museum of Pennsylvania.