For information about PHASES-An Explanation? AMERICAN LOCOMOTIVE COMPANYALCO=American Locomotive Company MLW=Montreal Locomotive Works ALCO & MLW didn't use model designations, only spec numbers, such as E-1641(RS-1) or DL-440(T-6), etc. Authors and modelers started applying Acronyms to the various Spec numbers as follows.
Beginning with the Centuries these designations were applied by ALCO.
BALDWIN LOCOMOTIVE WORKSBaldwin assigned these designations. BLW=Baldwin Locomotive Works BLW=Build'em Like Wanted (BLW built many steam and diesels to customers wishes) BLH=Baldwin Lima-Hamilton VO-1000=De La Vergne engine models, 1000 indicates HP DS-4-4-6=Diesel Switcher, 4 axles switcher trucks, 6 indicates 660 HP S-12=Switcher, 4 axle switcher trucks, 12 indicates 1200 HP. DRS-4-4-10=Diesel Roadswitcher, 4 axles AAR type "B" trucks, 10 indicates 1000 HP RS-12=Roadswitcher, 4 axles AAR type "B" trucks, 12 indicates 1200 HP AS-16=Roadswitcher, 4 axles AAR type "B" trucks, 16 indicates 1600 HP AS-416=Roadswitcher, 6 axle A-1-A trucks, 1600 HP AS-616=Roadswitcher, 6 axle C-C trucks, 1600 HP DT-6-6-20=Diesel Transfer, 6 axle C-C trucks, 2000 HP DR-12-8-1500/2=Diesel Road unit, 12 axle, 2 D trucks, 2-1500 HP engines These were the "Centipedes" DR-6-4-20=Diesel Road unit, 6 axle, 2 A-1-A trucks, 2000 HP These were the "Babyfaces" and in a different body designed by Raymond Lowey was the passenger "Shark" or "Sharknose". RF-16=Road Freight, 4 axles AAR type "B" trucks, 1600 HP These were the freight "Shark" or "Sharknose". ELECTRO-MOTIVE DIVISION, GENERAL MOTORS CORPORATIONEMD assigned model designations(acronyms). EMD=Electromotive Division EMD=Every Model Different (assigned by WAGs) SC=Six hundred HP, Cast frame, these were switchers, 1, 2, etc indicate models. NC=Nine hundred HP, Cast frame, these were switchers, 1, 2 etc indicate models. SW-1=Six hundred HP, Welded frame, switcher model 1. NW-1=Nine hundred HP, Welded frame, switcher model 1. As time went on switchers used larger HP engines so the S and N with W lost their meaning. SW was then used for switchers in general. SW-900=Switcher, 4 axle switcher trucks, 900 Hp. SW-9=Switcher, 4 axle switcher trucks, 1200 Hp. There is no rhyme or reason to some SW designations.... SW-1000=Switcher, 4 axle switcher trucks, 1000 Hp. The number indicates HP. NW-2=Switcher, 4 axle switcher trucks, 1000 Hp, 3, 5 etc indicate models. TR-1=Transfer unit, cow and calf, 1350 HP. TA=Twelve hundred HP "A" unit, 4 axle AAR"B" trucks. GMD-1=General Motors Diesel model 1 by GMD of Canada, 4 or 6 axle trucks, 1200 HP. RS-1325=Road switcher, 4 axle Flexicoil trucks, 1325 HP. BL-2=Branchline unit, 4 axle Blomberg trucks, 1500 HP. GP-7=General Purpose, 4 axle Blomberg trucks, 1500 HP, 9, 18 etc indicates change in HP ratings and or model. GP-38-2=Dash 2 version of the GP series, mainly electrical changes. SD-7=Special Duty, 6 axle C-C trucks, 1500 HP, 9, 18 etc indicates change in HP ratings and or model. SDP-=Special duty model equipped for passenger service. SDl-=Special Duty lightweight model for use on lightweight or branchline track. MP-15=Multi Purpose, 4 axle trucks, 1500 HP. DD-35=Road unit consisting of 2 3500 HP units on 2 "D" trucks. FT=Freight cab unit, 4 axle Blomberg trucks, Thirteen hundred HP. FT=Fourteen Hundred HP, Twin(drawbar connected)units F2A=Freight cab unit, 4 axle Blomberg trucks, 2, 3 etc indicates change in model and horsepower. FP-7=Freight unit equipped with pasenger equipment, 4 axle Blomberg trucks. EA=Eighteen Hundred HP, "A" unit, 6 axle A-1-A trucks, passenger service. E2A="A" cab type Passenger unit, 2,3, 4 etc indicate model change. HP varies. F-45=Cowl type Freight unit 6 axle C-C trucks, 3600 HP. FP-45=Cowl type Freight unit equipped with passenger equipment, 3600 HP. FAIRBANKS-MORSE CORPORATIONF-M assigned these designations FM=Fairbanks Morse H-10-44=Hood(switcher)unit, 1000 Hp, 4 axle. H-12-44TS=Hood(switcher)passenger terminal, 1200 HP, 4 axle switcher trucks. H-16-44=Roadswitcher, 4 axle AAR type "B" trucks, 1600 HP. H-16-66=Roadswitcher, 6 axle trucks, 1600 HP, Known as "Baby Trainmasters". H-20-44=Hood(Roadswitcher), 4 axle AAR type "B" trucks, 2000 HP. H-24-66=Roadswitcher, 6 axle trucks, 2400 HP, Known as "Trainmasters". A-Erie="A" Passenger Cab unit built in Erie, 6 axle A-1-A trucks, 2000 HP. B-Erie="B" Passenger Cab unit built in Erie, 6 axle A-1-A trucks, 2000 HP. CFA-16-4="A" Freight cab unit, 4 axle AAR type "B" trucks, 1600 HP. CFB-20-4="B" Freight cab unit, 4 axle AAR type "B" trucks, 2000 HP. The two above were known as "C" Liners. CPA-16-4="A" Passenger cab unit, 4 axle AAR type "B" trucks, 1600 HP. GENERAL ELECTRIC COMPANYGE=General Electric Early units were designated by tonnage. 44-ton=Smallest engine that could be operated by one man under the 1937 agreement that protected firemens jobs. 70-ton=largest loco for restricted axle loadings. UD-18= Universal Diesel, 4 axle AAR type "B" trucks, 1800 HP. U25B=Universal, B designated 4 axle AAR type "B" trucks, 2500 HP. U25C=Universal, C designated 6 axle C-C type trucks, 2500 HP. These are known as "U" Boats, subsequent models used the numbers to indicate Horsepower ratings, 28, 30 36 etc. U34CG=Universal, CG indicates cowl body, 3400 HP. U34CH=Universal, CH indicated head end power available for passenger service. U50=Universal, 2 sets of 4 axle AAR type "B" trucks joined by span bolsters, 5000 Hp(2 2500 Hp engines). U50C=Universal, 6 axle C-C trucks, 5000 Hp(2-2500HP engines) B23-7=Dash 7 model, 4 axle Hi-AD type "B" trucks, 2250 HP, AC traction motors. BQ23-7=4 axle AAR type "B" trucks, "Quarters" cab, 2250 HP. B32-8=Dash 8 models, 4 axle Hi-AD type "B" trucks, 3150 HP, Microprocessor control. Dash 8-32BWH=Amtrak engine, 4 axle Hi-AD type "B" trucks, Wide Hood, 3200 HP. Others were Dash 8-40B, BW and BWH, these re identified as B40-8 etc. B40-8WH=Amtrak cowl body, 4 axle special trucks, 4000 HP. C30-7=Dash 7 model, 6 axle C-C trucks, 3000 HP, AC traction motors. C32-8=Dash 8 model, 6 axle C-C trucks, 3150 HP, Microprocessor control. Dash 8-40C=Dash 8 model, 6 axle C-C trucks, 4000 HP, Microprocessor control. Dash 8-40CW=Dash model, full Cowl body, wide cab, otherwise same as Dash 8-40C. AC44CW=Generator and traction motors are AC, 6 axle C-C trucks, 4400 HP. E25B=Electric, AC overhead/DC traction motors, 4 axle "B" trucks, 2500 HP. E60CH=Electric, Cowl type body, equipped with Head end power, 6000 HP. LIMA-HAMILTONAll L-H units were classed by Horsepower, 750, 800, 1000, 1200 & 2500 HP. |