Available Items

20-21894-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Chessie

20-21895-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Chessie

20-21896-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Reading & Northern

20-21897-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Reading & Northern

20-21898-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Seaboard

20-21899-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Seaboard

20-21900-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Norfolk Southern

20-21901-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Norfolk Southern

20-21902-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Conrail

20-21903-1

O Scale Premier SD50 Diesel Engine w/Proto-Sound 3.0 (Hi-Rail Wheels)
  • Conrail

2024 O Scale Premier SD50 Diesel Locomotives Announced

January 23, 2024 - M.T.H. Electric Trains will be releasing the 2024 O Scale Premier SD50 Diesel Locomotive in five different liveries next Summer. Each of these offerings will be available in two authentic cab numbers in limited quantities and is expected to begin shipping to M.T.H. Authorized Retailers in July 2024.

Check out each of the offerings in the list on the left.

PROTOTYPE HISTORY

EMD's "50 Series" diesel locomotives of the mid-1980s were the product of the most extensive testing in the company's 50-year history. Both the four-axle, four-motor GP50 and the six-axle, six-motor SD50 utilized a new control system that substantially increased hauling capacity and reduced engine noise levels.

The 3500 hp SD50 measured just 30" longer than the SD40-2 it replaced but differed substantially in appearance. Gone were the front and rear "porches" of the SD40-2 and the dynamic brake blisters on the sides of its hood. Under the SD50's longer hood, the dynamic brakes, which generate a lot of heat, were relocated from a position over the hot engine to a cleaner, cooler area just behind the cab.

The SD50 also introduced EMD's new "Super Series" control system, which included a radar unit for measuring true ground speed and electronic monitoring of the electrical equipment. A primary benefit of the new control system was its ability to maximize rail adhesion by automatically applying short bursts of sand as needed to maintain traction. The system allowed three SD50s to do the work of four older locomotives.

Check out each of the offerings in the list on the left.

Product Features

  • Directionally Controlled Headlights
  • Intricately Detailed ABS Body
  • Metal Wheels, Axles and Gears
  • Die-Cast Truck Sides, Pilots and Fuel Tank
  • (2) Remotely Controlled Proto-Couplers®
  • Colorful Paint Scheme
  • Metal Chassis
  • Metal Handrails and Decorative Horn
  • (2) Precision Flywheel Equipped Motors
  • Locomotive Speed Control
  • Proto-Scale 3-2 3-Rail/2-Rail Conversion Capable
  • Lighted Cab Interior
  • Illuminated Number Boards
  • Lighted Marker Lights
  • (2) Engineer Cab Figures
  • Metal Body Side Grilles
  • Operating Smoke Unit
  • Moveable Roof Fan Blades
  • Proto-Sound 3.0 With The Digital Command System Featuring Freight Yard Proto-Effects
  • Unit Measures: 17 ¾" x 3 ¾" x 2 ½"
  • Operates On O-42 Curves

    Diesel DCC Features

  • F0 Head/Tail light
  • F1 Bell
  • F2 Horn
  • F3 Start-up/Shut-down
  • F4 PFA
  • F5 Lights (except head/tail)
  • F6 Master Volume
  • F7 Front Coupler
  • F8 Rear Coupler
  • F9 Forward Signal
  • F10 Reverse Signal
  • F11 Grade Crossing
  • F12 Smoke On/Off
  • F13 Smoke Volume
  • F14 Idle Sequence 3
  • F15 Idle Sequence 2
  • F16 Idle Sequence 1
  • F17 Extended Start-up
  • F18 Extended Shut-down
  • F19 Rev Up
  • F20 Rev Down
  • F21 One Shot Doppler
  • F22 Coupler Slack
  • F23 Coupler Close
  • F24 Single Horn Blast
  • F25 Engine Sounds
  • F26 Brake Sounds
  • F27 Cab Chatter
  • F28 Feature Reset