Athearn HO 71629 SD40-2, Union Pacific (United Way) #3300 (DCC and Sound Equipped)


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Athearn HO 71629 SD40-2, Union Pacific (United Way) #3300 (DCC and Sound Equipped)
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The SD40-2 was introduced in January 1972 as part of EMD's Dash 2 series, responding to competing products from GE and ALCO. Reliability and versatility of the 3,000-horsepower SD40-2 made it the best-selling model in EMD’s history and the standard of the industry for several decades after its introduction. The SD40-2 was an improvement over the SD40, with modular electronic control systems similar to those of the experimental SD45X and DDA40X. The last SD40-2 delivered to a United States railroad was built in July 1984, with production continuing for railroads in Canada until 1988.

Fully assembled and ready-to-run
Separately applied wire grab irons
Separately applied air tanks
Coupler cut levers
Rubber MU hoses
Photo-etch stainless steel windshield wipers
Fine scale handrails molded in engineering plastic
DCC-ready Non-sound version features 21-pin NEM DCC plug
See-through dynamic brake and radiator fans
Exhaust stack
Frame mounted bell (unless noted)
Detailed 4000 gallon fuel tank (unless different capacity is noted)
HTC or Flexicoil-C trucks (per prototype)
McHenry scale knuckle spring couplers
Highly-detailed, injection molded body featuring new tooling
Painted and printed for realistic decoration
See through cab windows
Bi-directional LED lighting
All-wheel drive with precision gears for smooth and quiet operation
All-wheel electrical pickup
5-pole motor with flywheels and multi-link drivetrain
Wheels with RP25 contours operate on all popular brands of track
Minimum radius: 18"
Recommended radius: 22"
All-new LED lighting
Rubber MU hoses for durability
Photo-etched stainless steel windshield wipers
Front snowplow
Late coupler cut levers
Large anticlimber
Illuminated ditch lights
116” nose with brakewheel
Round nose vent on right side
Standard late Dash-2 style 4-window cab without roof seam and louvers
Riveted cab side panels
Mirrors/wind deflectors fore of windows
Leslie RS3L Air Horn
Firecracker antenna
Intermediate Dash-2 style battery box door on left-hand side
Welded ECAFB
Early extended range dynamic brake
Corrugated radiator grilles
Standard radiator fans

Onboard Econami sound decoder by Soundtraxx
Engine startup sound sequence
Dynamic brake sound or Non-Dynamic Straight to idle on F4
Extra prime mover and horn sounds exclusive to Athearn version
Multiple bell sound files user configurable via Configuration Value (CV)
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
Current Keeper ready with on board expansion plug
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 CV changes
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  • 4
    Athearn 71629 SD40-2 RTR

    Posted by David Fortney on Sep 26th 2019

    I found the handrails on one side of the locomotive laying loose in the bottom of the box. It was a very easy fix. That was the only issue. Very well detailed and the dcc and sound worked very well. The sound is very good. Paint was crisp especially the stripes. Started at 1 mph. Very smooth. Athearn did a great job with these engines. I'm glad to see that most of the small details have been added to the model. At my age and dexterity now does not allow me to add the small parts. I will buy more of these RTR models. If you want a great model and on a budget or not these are great.