HO Scale: Rivet Counter - EMD SD40-2 - DCC & Sound - CNW 'Zito Yellow'


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ScaleTrains HO Scale: Rivet Counter - EMD SD40-2 - DCC & Sound - CNW 'Zito Yellow'

In January 1972, Electro-Motive Division (EMD) of General Motors would build the first production models of a locomotive design that would prove to be legendary: the SD40-2. The flagship of the “Dash-2” series of 1972, the SD40-2 would build upon the lessons learned from its predecessor, the SD40. While the sixteen-cylinder 645E3 turbocharged prime mover remained the same from its SD40 cousin, the SD40-2 boasted a modular, solid-state electrical system, which featured removable “cards” in place of troublesome relays in its high-voltage cabinet, greatly simplifying electrical troubleshooting and repairs.

Externally, the biggest change was the use of the new HT-C three-axle truck in place of the Flexi-coil C of the SD40. The new truck promised greater adhesion, and was longer than the Flexi-coil C, necessitating an increase of the length of the SD40-2s frame to an overall length of 68’, 10” over the couplers. This also had the effect of giving the SD40-2 its characteristic long walkway “porches” at each end. Other small external improvements, such as longer battery box compartments, rear overhang on the cab roof, and drip rail over the front cab door, added to the list of external differences between it and the SD40.

Domestic production of the SD40-2 continued until July 1984 making it one of EMD’s most popular locomotives of all time. Many remain in service today, both with original owners as well as secondhand operators. Within the last five years, Norfolk Southern and CSX have rebuilt hundreds of SD40-2s to extend their operating life. This will ensure this venerable locomotive’s presence on U.S. rails for decades to come.

Road Number Specific ScaleTrains

  • Phase Ia2 units built in February 1974 (C&NW 6816-6865)
  • Era represented by paint and configuration: late 1980s until the merger with UP in 1995
  • Painted in high-visibility “Zito Yellow”
  • Final Zito yellow scheme variant, “SYc”, introduced in the late 1980s, featuring yellow frame striping, and gothic “CNW” initials on front of the low short hood
  • Nose-mounted “gong” bell
  • Operating LED Tomar 804-72 strobe light mounted on the cab roof
  • Equipped with ATS pickup shoes
  • Separate broom located inside low short hood grab iron on the engineer’s side
  • Front EMD-style low pilot plow with MU hose doors
  • Standard front and rear drop steps
  • “Tall” stepwells with see-through steps
  • 81” low short hood with ratchet handbrake and angled chain guard
  • Early sub-base doors with early hinges
  • Bolted battery doors with narrow louvers
  • Cab with bolted (are bolted and riveted the same?) bolted side window panels, sunshades, and long sunshade tracks
  • Leslie RS3-LR Horn with anti-debris “shower caps” mounted on number board housing
  • Large Sinclair Excalibur “ice skate” antenna (communications)
  • Early electrical cabinet “zig-zag” seam
  • Stand-off ECAFB (early)
  • Early inertial air intake grills
  • Extended-range dynamic brakes with batten strip
  • “Chicken-wire” radiator intake grills
  • See-through standard 48” radiator fan housings with fan blades visible inside
  • Curved radiator fan grab iron
  • Angled uncoupling levers with loop handles
  • 3-hose MU hose clusters with silver gladhands
  • Rear MU hose catch tray
  • Spare knuckles on rear pilot face
  • Squared pilot faces with reinforced lifting holes
  • Tall jacking pads with holes (early)
  • Forward engineer’s side sidesill notch
  • Flush-mount EFCO
  • Salem air filter (accordion style)
  • Highly detailed 4,000 gallon fuel tank with fuel fillers and gauges
  • Detailed HT-C trucks with Hyatt bearing caps, early center axle snubbers, sanding lines and brackets, and D-77 traction motor and air duct details
  • Trucolor main color matches: TCP-140 CNW Zito Yellow and TCP-109 CNW Green

Rivet Counter SD40-2 Locomotive Features

  • Fully-assembled
  • Multiple road numbers
  • Printed and LED lighted number boards
  • Dimensionally accurate truck centers
  • Sectioned treadplate detail on the walkways
  • Underbody frame rail with separate plumbing and traction motor cables
  • Accurate hood door and long hood detail
  • Accurately profiled dynamic brake housings
  • See-through dynamic brake intakes with resistor grid detail
  • Detailed cab interior with separate floor, rear wall, seats, and standard AAR control stand
  • Sliding cab windows
  • Factory-applied wire grab irons, wire lift rings, windshield wipers, snowplows, horns, coupler cut levers, trainline hoses with silver gladhands, sand hatch covers, and much more
  • Semi-scale coupler buffer equipped with ScaleTrains.com durable metal semi-scale E Type knuckle couplers
  • Directional LED headlights
  • All-wheel drive
  • All-wheel electrical pick-up
  • Motor with 5-pole skew wound armature
  • Dual flywheels
  • Printing and lettering legible even under magnification
  • Color matched to Tru-Color Paint colors whenever possible
  • Operates on Code 70, 83 and 100 rail
  • Packaging safely stores model
  • Minimum radius: 18”
  • Recommended radius: 22”
  • DCC & sound equipped locomotives also feature
    • ESU v5 DCC & Sound decoder with “Full Throttle”
    • Dual cube-type speakers
    • ESU designed PowerPack with two super capacitors
    • Operates on both DC and DCC layouts*
  • DC/DCC & sound ready locomotives also feature
    • Operate using a DC power pack
    • DCC ready with 21-pin connector

* some sound and lighting function on DCC & sound equipped models are not operable using DC

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