Description
In 1949, EMD introduced the GP7. The basic design followed most diesel switchers with the addition of a short hood instead of an end-cab. The hoods were also full height to better accommodate the diesel engine and mechanical and electrical components.
In 1954 EMD upgraded the GP7 to become the 1,750 horsepower GP9. Externally, the first GP9s were virtually unchanged from the last GP7s. Later versions would include different louver arrangements and the last ones would come without the frame skirting. The GP9 was available with all of the fuel tank, steam generator, and dynamic brake options as the GP7, including “torpedo tube” air tanks mounted on the roof. In 1954 EMD upgraded the GP7 to become the 1,750 horsepower GP9. Externally, the first GP9s were virtually unchanged from the last GP7s. Later versions would include different louver arrangements and the last ones would come without the frame skirting. The GP9 was available with all of the fuel tank, steam generator, and dynamic brake options as the GP7, including “torpedo tube” air tanks mounted on the roof.
Many railroads chose to rebuild their GP7s and GP9s for continued service. Often times, it was cheaper to do this rather than purchasing brand-new locomotives. Many railroads chose to rebuild their GP7s and GP9s for continued service. Often times, it was cheaper to do this rather than purchasing brand-new locomotives.
GP9 SERIES LOCOMOTIVE FEATURES: GP9 SERIES LOCOMOTIVE FEATURES:
Full cab interior Full cab interior
Wire grab irons Wire grab irons
Coupler cut levers Coupler cut levers
See-through cab windows See-through cab windows
Flexible rubber trainline hose Flexible rubber trainline hose
Flexible rubber MU hoses Flexible rubber MU hoses
Drop steps unless noted Drop steps unless noted
“Nub” style walkway tread “Nub” style walkway tread
Lift rings Lift rings
Sander lines Sander lines
Windshield wipers Windshield wipers
MU stands MU stands
See-through cab windows See-through cab windows
Bell placement and type per prototype Bell placement and type per prototype
Etched metal radiator intake grilles and fan grilles Etched metal radiator intake grilles and fan grilles
Air tanks mounted below sill unless noted Air tanks mounted below sill unless noted
Blomberg-B trucks with appropriate bearing caps Blomberg-B trucks with appropriate bearing caps
Speed recorder unless noted Speed recorder unless noted
Body-mounted McHenry operating scale knuckle couplers Body-mounted McHenry operating scale knuckle couplers
DCC-ready features Quick Plug plug-and-play technology with 21-pin NEM connector DCC-ready features Quick Plug plug-and-play technology with 21-pin NEM connector
Fine-scale Celcon handrails for scale appearance Fine-scale Celcon handrails for scale appearance
Detailed fuel tank with fuel fillers, fuel gauges, breather pipes, and retention tanks Detailed fuel tank with fuel fillers, fuel gauges, breather pipes, and retention tanks
Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain
All-wheel drive with precision gears for smooth and quiet operation All-wheel drive with precision gears for smooth and quiet operation
All-wheel electrical pickup provides reliable current flow All-wheel electrical pickup provides reliable current flow
Wheels with RP25 contours operate on all popular brands of track Wheels with RP25 contours operate on all popular brands of track
Bidirectional constant LED lighting so headlight brightness remains constant Bidirectional constant LED lighting so headlight brightness remains constant
Heavy die-cast frame for greater traction and more pulling power Heavy die-cast frame for greater traction and more pulling power
Scaled from prototype resources including drawings, field measurements, photographs, and more Scaled from prototype resources including drawings, field measurements, photographs, and more
Accurately-painted and -printed paint schemes Accurately-painted and -printed paint schemes
Fully-assembled and ready-to-run Fully-assembled and ready-to-run
Minimum radius: 18″ – Recommended radius: 22″ Minimum radius: 18″ – Recommended radius: 22″
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