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.

PRR 6550 - HW "M70b" mail. Bottom image. (RR PICTURE ARCHIVES) PRR 6553 - HW "BM70m" baggage - mail. (NORTH EAST RAILS) ... PRR 7012 Rotary Club - (ex-PULL) HW Plan 3992H parlor - cafe - lounge, with PRR Lambs Club. (B. COOLIDGE) PRR 7012 Rotary Club - (B. COOLIDGE) PRR 7012 Rotary Club - (RR - FALLEN FLAGS) PRR 7012 Rotary Club - in …

C1 – 0-8-0 – The PRR had 90 of the class C1 switchers. They were the heaviest 0-8-0 type locomotive ever built. They proved unpopular with the roundhouse crew as they were prone to derailing on bad track and to stay bolt leaks. They were used in hump service when there were no other class locomotive available. C1 No. 6610 taken at Columbus.

It became CSX Transportation 7101, Class 30-7A, in 1999 and resold as NS PRR 8118. It was retired on November 2, 2000, and sold as America Latima Logistica 9281. 6576, Class C30-7A, was built in June 1984, #44565 .

prr第一台“复式”传动机车是1939年的6-4-4-6轮式s1-6100号机车。 它功能强大，在平道上达到了100 mile/h（162.50 km/h）的速度。 尽管它的实用性受限，但其性能鼓励了PRR继续开发“复式”传动机车。

Pennsylvania Railroad Rolling Stock Photographic Roster: Reporting Marks: PRR Showing Type RPO: Click on a item to view pictures

Bottom Photo: PRR M-70B Mail Car #6550, "United States Mail Railway Post Office," built in the Altoona Car Shops. Date: 7/1/1939 Location: Altoona, PA Map

2022年10月3日 · Here are a couple of shots of the first C1 #6550 (C/N 3981 per Edson) probably taken on its first day under steam at Juniata in May 1925.

Available only in factory finish including interior walls, tinted glass and Micro-Trains® MAGNE-MATIC® Couplers. * Please note that the 1938 20th Century Ltd. always had two diners in it's consist.

Flexible-beam eight-coupled engines from Baldwin enjoyed some success beginning in the mid-1840s (see Locobase 1022 for a description of this setup). Colburn pointed out two advantages to the layout. The "hind truck" was under the firebox and, "while the wheelbase is thus limited, an equal distribution of weight is obtained."