f3 phII early

The PRR acquired hundreds of EMD F-units beginning in July of 1947. Complicating matters for railfans and modelers alike are the many "phases" of units that the railroad purchased. This document intends to point out the spotting features across the various models and phases.

There were 1807 F3/F5 units built, of which the PRR purchased 146 (8%). There were 3849 F7 units built, of which the PRR purchased 164 (4%). There were 372 FP7 units built, of which the PRR purchased 54 (15%).

The PRR did not purchase any of the earlier FT's or F2's, nor the later F9's, FP9's, or FL9's.

Road numbers in bold are in my personal collection (or on order).

 

Note: Road numbers separated by dashes indicate a range of road numbers.

Original tables developed by Jim Fuhrman with details supplied by Ed Hawkins and John Thompson.


PENNSYLVANIA RAILROAD
PHASE CHART: EMD F2, F3 & F5 DIESEL LOCOMOTIVES

All Phases here include rectangular-slit type dynamic brakes on both cabs and boosters
Designation F2 F3
Phase1
F3
Phase 2 Early
F3
Phase 2 Late
F3
Phase 3
F3
Phase 4
"F5"
Dates Jul 46 to
Dec 46
Nov-Dec 46>> Feb-May 47>> Dec 47-Apr 48>> Mar-Jun 48>> Aug-Nov 48>> October 48
to Feb 49
Radiator Fans High, flat-top 36" Low-pan-top 36"
Top-third panel Chicken Wire in openings only Full Chicken wire at top third panel Horizontal Stainless Steel Grille
Rear vent opening Short Long
Center-third panel Three equally-spaced portholes Chicken wire between two portholes covering 4 rectangular openings 4 horizontal louvers between two portholes
Electrical Same as FT D17 traction motors D27 traction motors 
w/heavier cables
Number Boards Same as FT Small, streamlined four-digit (see Note 2)
Air Horn N/A Leslie single-note Tyfon A-200 (single, facing forward)

Sample
PRR Roster none none 6 A units
8 B units
16 A units
17 B units
9 A units
7 B units
24 A units 25 A units
12 B units
PRR Photo N/A N/A f3 phII early f3 phII late f3 phIII f3 phIV f5
PRR HO Models N/A N/A

Precision Craft Models6 (9501, 9501B, 9504, 9504B)

Athearn Genesis6

Stewart Hobbies(9501)

Life Like Proto 10006(9502, 9502B)

Highliner6 (shell)

Highliner6 (shell) Highliner6 (shell)

Stewart Hobbies6 (9879)

Highliner6 (shell)

Highliner6 (shell)

 Notes:

 1. All F2-F7 Boosters have 3 equally-spaced portholes in the center third panel.

 2. While most roads opted for a large, angled number board, the PRR purchased the standard streamlined (small) four-digit numberboard.

 3. F3 Phase IIb: Hirsimaki's Black Gold, Black Diamonds, Volume Two indicates (p. 42) that the helper units were not equipped with trainphone antennas. But we know from photo evidence that the units were so equipped, but as delivered did not have trainphone antennas. This initial A-B-A helper demonstrator set was delivered to the PRR in January 1948. They served on the Pittsburgh Division and were retired in December 1962. Also during an overhaul in August of 1956 helper unit 9519A was rebuilt to F-5 specifications with heavier traction motor cables, a prime mover from unit 9782B, and the front replacement porthole panel from a phase 2 F-7A thus eliminating the chicken wire in this area of the carbody. It was reclassified EF15a.

 4. F3 Phase IV (F5): For the Pennsy the F-5 units went to work as "Snappers," the F-5 program never impacted the through freight units. Jack Consoli contests the generator as being one of the changes in this phase. However, the fact remains that, for the most part, these units appeared the same externally as the Phase IV's.

 5. The InterMountain F3's in Pennsy livery have incorrect (angled) number boards. It is also worth noting that the parts sprue used to manufacture this locomotive also contains the high fans required for a Phase IIa depiction.

6. Model lacks trainphone per prototype,

PENNSYLVANIA RAILROAD
PHASE CHART: EMD F7 & F9 DIESEL LOCOMOTIVES

F7 & F9 cabs and boosters---features as delivered:

Production
phases
F7 Phase 1a (Early) F7 Phase 1b (Late) F7 Phase 1c (Late) F7 Phase 2
to Dec 1953
F9
to Apr 1957
Dates Feb
1949>>
July
1949>>
Mar
1950>>
Nov
1950>>
Mar
1951>>
June
1951>>
Oct
1951>>
Feb
1952>>
June
1952>>
Oct
1952>>
Jan
1954>>
Grille horizontal horizontal or
"Farr Air" vertical
vertical vertical vertical
Louvers 4 horizontal 4 vertical 5 vertical
DB fan 36" 36" 36"/48" 48" 48"
Windshield gasket flush raised raised raised
Door corners,
Kick plates
square.
yes
round,
no
round,
no
round,
no
Wing window short, w/square corners tall, w/round corners tall, w/round corners tall,
round
corners
Drip strip single split, with rounded corners over door split, with rounded corners over door split
End door window square round round round
Sand filler cover round pull handle pull
handle
Rear overhang yes yes no no
Number Boards Small, streamlined four-digit Large, angled five-digit
Air Horn Leslie single-note Tyfon A-200 (single, facing forward)

Sample
Nathan 3-chime M3 (three, forward facing stub bells)

Sample
N/A Leslie Tyfon 3-chime A-125-3E Chime Tone(three, single-note horns, center facing rearward) N/A Leslie 3-chime S-3J (three, forward facing bells, center bell set higher)

Sample
N/A N/A
PRR Roster 20 A units
15 B units
27 A units
15 B units
none 68 A units
28 B units
none 8 A units
18 B units
none none
PRR Photo f7 phIa f7 phIb N/A   N/A   N/A N/A
PRR HO Models

Athearn Genesis8 (9671, 9671B, 9674, 9674B, 9675, 9675B, 9676, 9676B)

Walthers (9668, 9668B, 9671, 9671B)

Stewart Hobbies8

Highliner8 (shell)

Broadway Limited Imports (9640, 9640B, 9642, 9642B, 9644, 9644B, 9645B, 9648, 9648B, 9650, 9650B)

Walthers (9649, 9650)

Highliner8 (shell)

N/A

Athearn Genesis (9764, 9764B, 9765)

Life Like Proto (9780, 9780B)

InterMountain6 (9765, 9770, 9776B, 9806, 9813, 9825, 9827, 9830)

Stewart Hobbies8

N/A

Stewart Hobbies8

Highliner8 (shell)

N/A N/A

 Notes:

 1. F7s all rated at 1500 hp.

 2. Boosters all have 3 portholes instead of louvers.

 3. F7 Phase Ia: Initial Pennsy units featured streamlined (small) numberboards. As of July 1949 they switched to the 45-degree, four-digit numberboards. Greg Martin indicates that these units' windshields had raised, exposed gaskets.

 5. F7 Phase IIb/IIc: EMD offered a larger dynamic brake package (with 48" fans) but the PRR didn't purchase it.

 6. The InterMountain F7 in Pennsy livery features a square window on the rear end door, so it should be a Phase Ib. Road numbers and othe spotting features would indicate a Phase Ic. The parts sprue used in the manufacture of this model also includes a round window door, making a correct Phase Ic depiction possible.

 7. Not long after purchase, the units with the rear overhang had their overhang cut off.

 8. Model lacks trainphone per prototype,

PENNSYLVANIA RAILROAD
PHASE CHART: EMD FP7 DIESEL LOCOMOTIVES

Notes

The FP7 was introduced, with 4 extra feet of carbody added to accomodate a larger steam generator.

The first two PRR ABA sets (9832A-9832B-9833A and 9834A-9834B-9835A) were painted in the passenger scheme of Tuscan Red with five Buff stripes. The remaining units were painted in the standard freight scheme.

Spotting Features

Nathan M3 air horns

photo

PRR Road Numbers

Class EFP15:
39 A units

There was no FP7B unit produced. Rather, there were steam generator options for standard F7B units, of which the Pennsy purchased several which had previously been noted in the F7 table above. These were also classed EFP15:
14 B units

PRR HO Models

Athearn Genesis (9843, 9834B, 9844, 9844B, 98522, 98602, 98622, 9866, 98712)
InterMountain1 (9553B, 9650B, 9657B, 9764B, 9838, 9840, 9840B, 9841, 9852, 9852B, 9853, 9858B, 9865)
E-R Models1

1 Model lacks trainphone per prototype,

2 Dark Green Locomotive Enamel.

3 Tuscan Red.


Credits

Jack Consoli for considerable clean up and confirmation.

Greg Martin (via PRR-talk) for providing the base spotting features and much additional information later.

Bruce Andrews (via PRR-talk) for phases of helper units.