FM H-10-44, Class FS10

The FM H-10-44 was a yard switcher produced by Fairbanks-Morse from August, 1944–March, 1950. The units featured a 1,000-horsepower, six-cylinder opposed piston engine prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-A switcher trucks, with all axles powered. Many H-10-44s received modifications that increased their horsepower rating to 1,200 hp.


FM H-16-44, Class FS16m

The FM H-16-44 was a road-switcher produced by Fairbanks-Morse from April 1950 – February 1963. The locomotive shared an identical platform and carbody with the predecessor Model FM H-15-44 (but not the FM H-20-44 end cab road switcher which used a different carbody and frame and a larger prime mover), and were equipped with the same eight-cylinder opposed piston engine that had been uprated to 1,600 horsepower. The H-16-44 was configured in a B-B wheel arrangement, mounted atop a pair of two-axle AAR Type-B road trucks with all axles powered. In late 1950, the AAR trucks were almost exclusively replaced with the same units found on the company's "C-liner" locomotives.


EMD E units were the backbone of the Pennsy's passenger fleet.

Alco Pass Shark

Freight Locomotives

Baldwin DR 4-4-1500 "Early Shark", Class BF15 / BF15a

The Baldwin DR-4-4-15 was a 1,500-horsepower cab unit-type diesel locomotive built for freight service by the Baldwin Locomotive Works between November 1947 and June 1950. It was produced in two different body types, nicknamed the "Babyface" and "Sharknose" styles by railfans, though Baldwin used the same model number for both. 22 "Babyface" cab-equipped A units were built, along with 11 cabless booster B units; 36 "Sharknose" A units and 36 B units were constructed, making a total for all models of 105 locomotives built.

prr alco fa1


Alco FA1 / FB1, Class AF15

The ALCO FA was a family of B-B diesel locomotives designed to haul freight trains. The locomotives were built by a partnership of ALCO and General Electric in Schenectady, New York, between January 1946 and May 1959. They were of a cab unit design, and both cab-equipped lead (A unit) FA and cabless booster (B unit) FB models were built. A dual passenger-freight version, the FPA/FPB, was also offered. It was equipped with a steam generator for heating passenger cars.

When planning to model the Pennsy during the post World War II era, there are certain parameters which you may or may not wish to consider when selecting a year (or years) to depict. Among them may be paint schemes, specific models of diesel locomotives, specific models of freight cars, etc.

The graph below illustrates when certain features of the Pennsy came into play, or faded into history.

I consider the following Pennsylvania Railroad model railroads to have a high degree of fidelity to the prototype. They are not freelance, protolance, etc., but depict specific locales on the Pennsy based on historic documentation with a minimum of "modeler's license."

* Indicates a layout on which I have had the opportunity to operate. Those in italics are on my "bucket list" to visit.

RAILC X 40b 3w

Over the years, many lettering "schemes" have graced the sides of the Pennsy's vast fleet of rolling stock used in freight revenue service. This is a brief summary of an article by Brady McGuire which originally appeared in the Summer 1988 (Vol.21 No.2) issue of The Keystone, published by the Pennsylvania Railroad Technical & Historical Society. I highly recommend referring to the original text which contained much more information, prototype photos as examples, and official painting and lettering diagrams.

For modeling purposes, please remember that a particular scheme could be seen well after the period indicated below for the scheme. The period indicated represents what scheme would be applied to a car if painted during the period in question. But many cars, especially gondolas, were rarely repainted. For instance, a Circle Keystone gondola might be seen well into the 1960s...or even today!

Lettering banners and slogans were periodic modifications to lettering schemes which were not tied to a specific scheme but rather to a type of service or concept. For example, "Merchandise Service" or "Buy War Bonds".

Paragon2ReadingT120130912 0002.1The Pennsy was known to operate on its rails locomotives which it did not own. These inclued railroad test units, builder test units, demonstrators, and leased units.

Railroad Test Units

July and August, 1924: The PRR borrowed a 37-ton GE gas-electic at the piers in New York City.

1937: The PRR borrowed an EMC 600 hp switcher for potential use at the General Motors plant in Linden, New Jersey. The Pennsy purchased the unit afterwards -- Class ES6 #5911.

1947: The Pennsy tested an F-M H20-44 as a potential helper west of Altoona. They eventually went with EMD F3's for this purpose, in an A-B-A configuration.

These are the paint schemes applied to the GG1 over the course of the Pennsy. The green was actually darker, but is shown light here in order to contrast with black.

Early Prototype Scheme
1934 PRR: Dark Green, block pinstriping, small number keystone

1934: 4899/4800 only. (unit changed numbers in this scheme)

Developed by the PRR, this scheme predates the Loewy design. A similar design was used on the R1 experimental.

gg1 bbg