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Athearn #G64256 GP7u w/DCC & Sound, SF #2122

Athearn #G64256  GP7u w/DCC & Sound, SF #2122
  • Manufacture: Athearn
  • Category: Diesel Locomotive
  • Number: G64256
  • Scale: HO
  • Price: $246.99

Late coupler cut levers
GP7u Battery Box Doors
Dual sealed beam headlights with anti-glare shields
Late low nose cab interior with AAR control stand
Santa Fe Topeka Cab side panel without armrest
Small rear view mirror fore of right side cab window
Sunshade tracks with sunshade
Vapor air conditioner
Nathan AirChime K3LA 3-chime air horn with square bracket
Antenna ground plane with large Sinclair antenna
Short rear step box on left side behind the cab
Small hood-mounted inertial air filter hatch
Four exhaust stacks
36” radiator fans with blades visible inside
Ratchet brake
Underframe mounted bell
Air tank set with Salem air filter
Blomberg-B trucks with Hyatt bearing caps
Spare knuckle mounted on the right side trucks
Speed recorder
These locomotives represent a fleet of GP7 diesels upgraded by the Santa Fe in the mid-seventies. While the chopped nose and “Topeka Cab” are the most noticeable, many other modifications were made. Upgraded trucks, new electrical equipment, air conditioning, four-stack exhaust manifold and removal of the dynamic brake (if so equipped) are some of the others.

As per the prototype, the details of these units differ from road number to road number. Our models represent these differences. Two of the units include the modified dynamic brake system and the other two are engines that were not so equipped. Three represent the “no drop step” option that was standard on Santa Fe early Geeps. The fourth unit has the “always down” drop step common to most of these rebuilds.

Side skirts vary from unit to unit as does the horn, antenna and mirrors. All of these details are gleaned from many photos of the prototype. Details that you’ve come to expect from a Genesis model.


Front and rear MU catch boxes with footboard
Trainline and MU hoses
Coupler cut levers
Drop steps unless noted
MU stands
“Nub” style walkway tread
Bell located behind the right front step
Fine-scale handrails for scale appearance
Wire grab irons
Lift rings
Windshield wipers
See through cab windows Full cab interior
Etched metal radiator intake grilles and fan grilles
Air tanks mounted below sill unless noted
Detailed fuel tank with fuel fillers, fuel gauges, breather pipes, and retention tanks
Blomberg-B trucks with appropriate bearing caps
Sander lines
Speed recorder unless noted
Fully-assembled and ready-to-run
DCC-ready features Quick Plug™ plug-and-play technology with both 8- and 9-pin connector
Scaled from prototype resources including drawings, field measurements, photographs, and more
Accurately-painted and printed paint schemes
Body mounted McHenry operating scale knuckle couplers
Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain for trouble free operation
All-wheel drive with precision gears for smooth and quiet operation
All-wheel electrical pickup provides reliable current flow
Wheels with RP25 contours operate on all popular brands of track
Incandescent bulbs for realistic appearance
Bidirectional constant lighting so headlight brightness remains constant
Heavy die-cast frame for greater traction and more pulling power
Packaging securely holds for the model for safe storage
Replacement parts available
Minimum radius: 18”

Onboard DCC decoder with SoundTraxx Tsunami2 sound
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
Excellent Slow speed control
Operating lighting functions with F5 and/or F6
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


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