Alco RS3ph1a

The announcement by Bowser of forthcoming state-of-the-art RS-3's with road-specific features inspired this spotting guide for the various Alco RS units owned by the Pennsylvania Railroad.

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

 

Alco RS-1, Class AS10s / AS10am / AS10ams / AS10as

Pennsylvania Railroad RS-1 Roster

Road Numbers Class Build Dates Options HO Model
5619-5620 AS10am 6-9/50 CS, MU2  
5621-5624 AS10am 6-9/50 TP, MU2  
5625-5628 AS10am 6-9/50 MU2  
5629-5633 AS10am 6-9/50 TP  
5634-5636 AS10ms 6-9/50 TP, MU2  
5637-5638 AS10ms 6-9/50 MU2  
5639-5640 AS10ms 6-9/50 TP, CS, MU2 Atlas4 (5639, 5640) 
59061 AS10s 12/48 SG, CS  
8485-8486 AS10ams 5/52 SG, MU  
8857-8858 AS10as 3-4/51 SG, CS  Atlas3 (8857, 8858)
OPTIONS:
SG = Steam Generator
TP = Train Phone
CS = Cab Signals
MU = Multiple-Unit Connection
1Purchased specifically as power for the Parkton Local out of Baltimore.
2Multiple-unit connections only on short-hood end.
3Conversation on PRR-Modeling indicates the body is incorrect.
4Model does not include trainphone per prototype.

Alco RS-3, Class AS15m / AS16 / AS16m / AS16ms

Alco RS-3's were 1600 h.p. road switchers.

  Phase I Phase Ia Phase Ib Phase II Phase III
Build Dates 5/50-7/50 7/50-5/51 5/51-12/53 10/52-10/53 11/53-8/56
On PRR Roster No Yes1 Yes No   Yes
Louvers on Engine Doors No Groups at Top and Bottom Yes    
Louvers on Battery Box Doors Vertical
Horizontal
Louvered Car Body Short and Long Hood Short Hood Only
Air Cooled Turbochargers Lengthwise Stack  
Screened Air Intake Filters       Five Horizontal Five Vertical
Headlights Single Beam Two, Vertical   Two, Vertical 
Example   Alco RS3ph1a Alco RS3ph1b   Bowser 24683
1Units leased from the D&H in 1956 and purchased in 1958. Although technically RS-3 units, the horsepower was downgraded to 1500 h.p. As such, the Pennsy classed these units as AS15m.


Pennsylvania Railroad RS-3 Roster

Road Numbers Class Phase Build Dates Options HO Model
4041-4048 AS15m Phase 1a From D&H   Life Like Proto 1000 (4046)
8435-8438 AS16m  Phase 1b 11/1953 TP, DB  
8439-8442 AS16m Phase 1b  11/1953 TP  
8443, 8444 AS16ms Phase 1b  12/1953 SG, CS  
8445 "Hammerhead" AS16ms Phase 1b  12/1953 SG, TP, DB  
8452-8455 AS16m Phase 1b  6/1952 TP  
8456-8464 AS16m  Phase 1b 6/1952   Atlas (8459, 8462) 
8465-8470 AS16m  Phase 1b 6/1952 TP  
8471, 8472 AS16ms Phase 1b  7/1952 SG, TP, CS, DC, SC  
8473, 8474 AS16ms  Phase 1b 6/1952 SG, CS  
8475-8479 AS16ms Phase 1b  6/1952 SG, CS  
8480-8484 AS16ms  Phase 1b 6/1952 SG, TP  
8590-8599 AS16m Phase 3 12/1955 TP, CS, DB Bowser (8591, 8592, 8595)
8600-8603 AS16m Phase 3 12/1955 TP, DB Atlas2 (8601)
8604-8605 AS16m Phase 3 12/1955 TP Bachmann2 (8604, 8605)
8817-8836 AS16m Phase 1b 11/1951 TP, CS  
8837-88561 AS16ms Phase 1b 12/1951 SG, TP, CS, DC  
8902 AS16m Phase 1b 4/1951 SG, SC  
8903 AS16ms Phase 1b 4/1951 SG, TP, CS, HC  
8904 AS16m Phase 1b 4/1951 CS, HC  
8905 AS16ms Phase 1b 4/1951 SG, TP, CS  
8906-8909 AS16m Phase 1b 4-5/1951 HC  
8910-8913 AS16ms Phase 1b 4/1951 SG, TP  
8914 AS16 Phase 1b 5/1951    
8915, 8916 AS16ms Phase 1b 4/1951 SG, TP, CS  
OPTIONS:
SG = Steam Generator
TP = Train Phone
CS = Cab Signals
DC = Dual Control
HC = Hump Control
DB = Dynamic Brake
SC = Speed Control

1Purchased specifically for commuter service out of Pittsburgh.

2Model does not include train phone per prototype.

Alco RS-11, Class AS18m

All units featured multiple-unit control, cab signals, and dynamic brakes.

Pennsylvania Railroad RS-11 Roster

Road Numbers Class Delivery  Options HO Model
8617-8625 AS18m 8/56 TP

Rapido (8617, 8620, 8623, 8625)
Atlas1 (8624)

8626-8635 AS18m 2-5/57 TP Atlas1 (8630)
8636-8654 AS18m 11-12/57   Rapido (8647, 8651, 8652, 8654) 

OPTIONS:
TP = Train Phone

1Model does not include trainphone per prototype.


Six Axle Road Switchers


Alco RSD-5, Class AS16a / AS16am

Road Numbers Delivery HO Scale Model
8446-8451 10/52-3/53  

 

Alco RSD-7, Class APS24ms

Alco designed the RSD-7 to compete with the Fairbanks-Morse Train Master (H24-66).

Pennsylvania Railroad RSD-7 Roster

Road Numbers Class Delivery Dates Options HO Model
8606-86101  APS24ms   12/55-1/66 SG, DB, TP   

OPTIONS:
SG = Steam Generator
TP = Train Phone
DB = Dynamic Brake

1 Purchased for use as passenger helpers.

Alco RSD-12, Class AS18am

Six axle version of the RS-11, designed to compete with the EMD SD-9.

Predomonantly used as helpers between Altoona and Gallitzin.

Pennsylvania Railroad RSD-12 Roster

Road Numbers Class Delivery Dates Options HO Model
8655-86791   AS18am  12/57-4/58

CS, HC, DB 

 

OPTIONS:
CS = Cab Signals
HC = Hump Control
DB = Dynamic Brake

1 Purchased for helper and drag service; EMD F units moved to regular service.

Alco RSD-15, Class AS24m

Built as successor to the RSD-7.

Pennsylvania Railroad RSD-15 Roster

Road Numbers Class Delivery Dates Options HO Model
8611-8616  AS24m  6-8/56  CS, DB, TP Broadway Limited Imports
(8611, 8612, 8613, 8614, 8615, 8616
OPTIONS:
TP = Train Phone
CS = Cab Signals
DB = Dynamic Brake