By the 1920s the Northern Pacific Railroad needed bigger passenger locomotives. With the help of the American Locomotive Company's design engineers, NP designed a new locomotive with a massive firebox that had a 115 square foot grate area supported by a four wheel trailing truck. It was the first locomotive with a 4-8-4 wheel arrangement. ALCO delivered the first of 12 of these new locomotives in December of 1926, with the balance arriving early in 1927. Designated Class A, and assigned road numbers 2600 through 2611, they had 73" drivers, 28 x 30" cylinders, a boiler pressure of 210 psi, a tractive effort of 57,500 lbs and weighed 426,000 pounds. Later, the boiler pressure was raised to 240 psi which increased the tractive effort to 65,700 pounds. These were the first of this new wheel arrangement and thus were to be the namesake, with the name Northern Pacific selected which was very quickly shortened to just Northern. Ten Class A-2s (road numbers 2650 through 2659) came from the Baldwin Locomotive Works in 1934. These heavy Northerns had 77" drivers, 28 x 31" cylinders, a boiler pressure of 260 psi, a tractive effort of 69,800 lbs and a weight of 489,400 pounds. In 1938, The Northern Pacific took delivery of eight Class A-3s (road numbers 2660 through 2667), and at the sample time three more were delivered to the SP&S. The specifications for these locomotives were identical to the Class A-2 except that each weighed 2,400 pounds more. The SP&S locomotives were designated Class E-1. They were mostly identical to the Northern Pacific A-3's, except all three were oil burners. The eight Class A-4s (road numbers 2670 through 2677) were delivered by Baldwin in 1941, and had the same basic specifications as the A-3s, but were different in appearance, with 14 wheel centipede tenders and vestibule cabs, and they were 1000 pounds heavier. The last of the 4-8-4s purchased by the NP were the Class A-5s, which were built by Baldwin in 1943. This group of 10 (road numbers 2680 through 2689) were built to the same specifications as the Class A-4s, but turned out to be 16,200 lbs heavier. They were among the heaviest of all the Northern type locomotives ever built, at 508,500 pounds only the Santa Fe Class 2900s weighed more. There are no surviving Northern Pacific Northerns.
Industry-Leading Features:
NP and SP&S Northern Model Information:
ALL-NEW Paragon4 Sound & Control System
Synchronized Puffing Smoke with Chuff Sound
Variable Puffing Smoke Intensity and timing
Integral DCC Decoder with Back EMF for Industry Best Slow Speed Operation in DC and DCC
Precision Drive Mechanism engineered for continuous heavy load towing and smooth slow speed operation
5-Pole Can Motor with Skew Wound Armature
Built-in Capacity Pack for Improved Electrical Pick-up
Premium Caliber Painting with Authentic Paint Schemes
Prototypical Light Operation with Golden White LED Headlight, Rear Light
Brass Locomotive and Tender Body
Heavyweight Die Cast Chassis for Maximum Pulling Power
Accurately Modeled with Multiple Detail Options Appropriate for Each Paint Scheme
Option for Low Numberplate Beneath Headlight
Option for High or Low Numberboards where Accurate
Smokestack Extension Present Where Appropriate
Prototypically Accurate Paint Schemes for Each Model
Many Separately Applied Details Including Handrails, Grab Irons, Ladders, Piping, Whistle, and Brass Bell
Equipped with Traction Tires for Increased Pulling Power
Engineer and Fireman Figures Installed
Will Operate on Code 70, 83, and 100 rail
Recommended Minimum Radius: 18 inches
Accurate Prototypical Sounds for the UP CSA-2 Challenger
Broadway Limited Imports is proud to introduce Paragon4: The new benchmark for premium HO sound-equipped locomotives. These DC and DCC-Sound equipped locomotives feature the ALL-NEW Paragon4 sound and control system. Each Paragon4 locomotive comes with BLI's own integral DCC Decoder factory installed. Paragon4 locomotives offer Dual Mode DC and DCC operation with superb back EMF motor control, improved DC motor control, built-in capacitor pack for more reliable electrical pick-up, industry best on-board sound with Rolling Thunder functionality, Pro Lighting Mode for prototypical light control, Switcher model for precise low speed control, recordable DCC operation for automated playback, and the same excellent detail level as Broadway Limited's Paragon3 Series models.
Paragon4 Sound & Control System Features:
Operates in DC & DCC with improved DC speed control (use DCMaster for DC Sound)
Built-In capacitor pack to navigate imperfect track
Capacitor Pack automatically disabled on program track for full compatibility with JMRI Decoder Pro
Pro Lighting Mode offers individual control of all lights on model
Switcher Mode for precise low speed control.
Record & Play Operation - Records and plays back sounds and movements once or repeatedly for automatic operation
High Resolution Audio
Quillable Whistle for various whistle lengths and patterns
Choice of 3 selectable Horns
Alternate Whistle / Horn where applicable for locomotive with air horn and steam whistle - both the main whistle and alternate can be easily played
Adjustable bell ringing interval for faster or slower bell
Numerous user-mappable functions with available keys
Johnson Bar Sound at Direction Change
Multiple realistic passenger and crew sounds play on command
Grade Crossing Automatic Signal
Automatic Forward / Reverse Signal - When activated, stopping triggers and stop whistle toot. When moving forward from a stopped position, toots twice. When moving in reverse. toots three times.
Chuff sound intensity varies with load
Individually adjustable sound volumes for each effect
EZ Reset Button for quick return to factory default settings
**Specifications on this page subject to change.
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