PROTOTYPE SPECIFIC INFORMATION

The EMD MP15 is a light road switcher that was built between 1974 and 1980. It came in two designs, the MP15DC and the MP15AC. It was billed as replacement for the EMD SW1500

The MP15DC’s standard Blomberg B trucks were capable of transition and road speeds up to 60 mph (97 km/h), allowing use on road freights. Soon there was a demand for a model with an advanced AC drive system. The MP15AC replaced the MP15DC’s DC generator with an alternator producing AC power which is converted to DC for the traction motors with a silicon rectifier. The MP15AC is 1.5 ft (457 mm) longer than an MP15DC, the extra space being needed for the rectifier equipment. The alternator-rectifier combination is more reliable than a generator, and this equipment became the standard for new diesel-electric locomotive designs.

The MP15AC is easily distinguished from the DC models. Instead of the front-mounted radiator intake and belt-driven fan used on all previous EMD switchers, these have intakes on the lower forward nose sides and electric fans. Side intakes allowed the unit to take in cooler air, and the electric fans improved a serious reliability issue found in its earlier DC sisters.

In the early 1970s railroads were starting to convert to AC power, the six largest buyers, Milwaukee (64), Southern Pacific (58), Seaboard Coast Line Railroad (45), Nacionales de México (25), Long Island (23), and Louisville & Nashville (10), were all buying AC road locomotives. 36 more units were sold to 8 other customers.

 

MP15AC LOCOMOTIVE FEATURES:

• Full cab interior

• Coupler cut levers

• Flexible rubber trainline hose

• Windshield wipers

• Blomberg-B trucks

• Directional constant lighting

• Wire grab irons

• See-through cab windows

• Flexible rubber MU hoses

• Lift rings

• Sander lines

• Walkway Tread

• Operating ditch lights (if equipped)

• Operating ground lights

• Fine-scale Celcon handrails for scale appearance

• Headlight brightness remains constant

• Separately applied photo-etched metal and injection molded detail parts

• Detailed fuel tank with fuel fillers, fuel gauges, breather pipes

• DCC-ready features Quick Plug plug-and-play technology with 21-pin NEM connector

• Accurately-painted and –printed paint schemes

• McHenry scale knuckle couplers – Kadee compatible

• Fully-assembled and ready-to-run

• Scaled from prototype resources including drawings, field measurements, photographs, and more

• Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain

• All-wheel drive with precision gears for smooth & quiet operation

• All-wheel electrical pickup provides reliable current flow

• Wheels with RP25 contours operate on all popular brands of track

• Heavy die-cast frame for greater traction and more pulling power

• Packaging securely holds model for safe storage

• Replacement parts available

• Minimum radius: 18”

 

SOUND-EQUIPPED MODELS ALSO FEATURE

• Onboard DCC decoder with SoundTraxx Tsunami2 sound

• Dual cube speakers for optimal sound quality

• Sound units operate in both DC and DCC

• Full DCC functions available when operated in DCC mode

• Engine, horn, and bell sounds work in DC

• All functions NMRA compatible in DCC mode

• Precision slow speed control

• Program a multiple unit (MU) lashup with lead unit only horn, bell, and lights

• Many functions can be altered via Configuration Value (CV) changes

• CV chart included in the box

 

 

Union Pacific

Through mergers and lease agreements, UP acquired quite a few MP15AC’s. By the 2010’s, the paint was showing it’s age and UP started to repaint many of their locomotives. They added barrier stripes on the ends, added yellow frame stripes, and used a smaller lettering font size. Many can be found operating around yards and terminals.

 

UP FEATURES:

• Newer UP scheme with yellow frame stripe

• Ground lights

• Road number specific features

• Cab-mounted A/C

• Front and rear ditch lights

 

ROAD NUMBER SPECIFIC FEATURES:

• #1463 Ex-SP, Repaint with UP shield on the nose, cab-mounted 3-chime horn, SP style number boards, blanked SP light package, hood-mounted bell, large fuel tank, brake wheel

• #1488 Ex EMD Demo, repaint with UP “baby wings” on the nose, cab-mounted 3-chime horn, hood-mounted bell, large fuel tank, ratchet brake

 

 

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