September 20, 2002 -
Sullivan Indiana.
Photo courtesy of
Larry E. Gilbert.

Wig-Wag, LLC
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Union Pacific EMD DD40AX "Centennial" Locomotives



All releases are included below. 
If you are looking for something specific, not shown below, please use the
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or the Google search at the bottom of all pages on our site:


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Third Release:
Announced: 07-18-2013
Orders Due: ASAP
ETA:  October 2013
Second Release:
Announced: 3-26-10
Orders Due: ASAP
ETA: DELIVERED
First Release:
Announced: 07-18-08
Orders Due: ASAP
ETA: DELIVERED
Item Description
Not all items can be in stock at all times.
Due to minimum order requirements and shipping charges we "bunch" up re-orders to save you money.

(We reserve the right to correct errors and change prices without prior notice.)
Pricing Order link
Note: Not all of the items below may be in stock or available but the information is provided for reference purposes.

Please place your order using our SECURE Shopping Cart site: 
http://wig-wag-trains-cart.com/home

If you MUST send an e-mail inquiry, copy & paste the entire description TEXT ONLY (NO pictures!) from the item you are ordering into your e-mail.
It will save time and reduce confusion in determining what you are inquiring about.
With the quantity of lines we carry it's not possible to memorize all of them.

Be sure you review our terms pages before placing your order:
First: Terms Page One   Then: Terms Page Two  Finally: Terms Page Three

If you place an order, you have agreed to our terms.

Please remember to give your first and last name and the city and state where you live in all
your e-mails.

Non-USA customers please include the country.

EMD DD40AX

From Wikipedia, the free encyclopedia

EMD DD40AX
EMD DDA40X
UP 6915, preserved by the Southern California chapter of the Railway and Locomotive Historical Society at the Los Angeles County Fairplex in Pomona, California.
Power type Diesel-electric
Builder General Motors Electro-Motive ision (EMD)
Build date June 1969 – September 1971
Total production 47
AAR wheel arr. D-D
Gauge 4 ft 8˝ in (1,435 mm)
Wheelbase Between truck centers: 65 ft (19.81 m)
Truck wheelbase: 17 ft 1.5 in (5.22 m)
Length 98 ft 5 in (30 m)
Width 10 ft 4 in (3.15 m)
Height cab roof: 14 ft 11.375 in (4.56 m)
overall: 16 ft 4 in (4.98 m)
Locomotive weight 545,500 lb (247,400 kg)
Fuel capacity 8,230 US gallons (31,154 L)
Prime mover 2 × EMD 645E3A
Aspiration turbocharged
Cylinders V16
Power output 6600 hp (4,900 kW)
Safety systems Leslie Supertyfon model S5TRRO or S3LR horns
Career Union Pacific
Nicknames "Centennial"
Delivered 6900-6924: June–December 1969
6925-6946: June–September 1971
Disposition 1 in service, 45 withdrawn, (12 preserved, 34 broken up)

The EMD DD40AX was a 6,600 hp (4.9 MW) D-D diesel locomotive built by General Motors' Electro-Motive ision of La Grange, Illinois, for the Union Pacific Railroad. 47 locomotives were built between June 1969 and September 1971; they were numbered UP 6900–6946.

The first locomotive, 6900, was delivered in time to participate in the celebrations of the 100th anniversary of the completion of the transcontinental railroad by driving a golden spike at Promontory Summit, Utah. The class was therefore named Centennial by the Union Pacific.

The DD40AX is the longest diesel locomotive design ever built, at 98 ft 5 in (30 m). The locomotive frame length required exceeded the abilities of EMD's plant, so the frames were fabricated by an outside contractor, the John Mohr Company of Chicago. Even today, it is the most powerful diesel locomotive type ever built, although it achieves this by using two diesel prime movers.

The 'X' in the designation stood for Experimental: the DD40AX locomotives were the testbeds for much technology that would go into future EMD products. They pioneered the modular electronic control systems later used on EMD's Dash-2 line of locomotives. For the first time, the locomotive was able to load-test itself, using its dynamic braking resistors as an electrical load so that external equipment was not required. The DDA40X used the wide-nosed cab from the FP45 cowl units. This design closely resembled the Canadian comfort cab used on nearly all hood unit diesels today, but predated it by two decades.

As the DD40AX program was deemed a testbed, a number of experiments were conducted during the service life of these locomotives. One such test included fitting a few of the units with air raid sirens in order to warn trackside personnel when away from grade crossings. These tests were inconclusive, however.

The DD40AX is featured in the third sequel of the successful computer game series Railroad Tycoon under the name "DD40AX".

The engineer's control stand.
The engineer's control stand.

Original buyers

Owner Quantity
Union Pacific Railroad 47

The model features a totally new drive including DCC Onboard and updated shell tooling.  Here are photos we took for you from the roll out of this announcement at the NMRA-NTS in Anaheim, CA on July 17 & 18, 2008

Features:

  • DCC-equipped for speed, direction and lighting
  • Dual-mode NMRA decoder
  • Precision can motor with flywheels
  • 12 wheel drive
  • Finescale LED headlights (constant lighting)
  • Weathered air intakes and exhaust stacks
  • Designed for aftermarket sound installation






Notes from the Bachmann announcement for the Third Release:

"Bachmann has broken the sound barrier in N scale! Our first DCC sound equipped N scale locomotive, the EMD DD40AX, includes our Sound Value SoundTraxx® diesel sound package with prototypical prime movers (dual-motor sound), 3 air horns, and bell–all in 16-bit polyphonic sound. Dual motors with flywheels, operating “gumball” light, 16-wheel drive, lighted number boards, weathered air intakes and exhausts, and E-Z Mate® Mark II couplers. "

Item Description Pricing Order link
Third Release
Part #: Bac-65151 - Union Pacific - Road #: 6900 - EMD DD40AX Centennial - with SoundTraxx® Sound Value™ DCC On Board™

Click picture to see large view
Council Bluffs, Iowa, USA


March 14, 2005

-
UP 6900 has just been
repainted and is awaiting
being moved to the new
display at the new Kenefick
Park in Omaha, Nebraska.

Omaha, NE

April 1, 1969

UP 6900
Company shot

Click
Here For
Pricing

Click to place a
Secure Order On-Line
Part #: Bac-65152 - Union Pacific - Road #: 6929 - EMD DD40AX Centennial - with SoundTraxx® Sound Value™ DCC On Board™
Click picture to see large view
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Here For
Pricing

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Secure Order On-Line
Part #: Bac-65153 - Union Pacific - Road #: 6940 - EMD DD40AX Centennial - with SoundTraxx® Sound Value™ DCC On Board™
Click picture to see large view
Click
Here For
Pricing

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Secure Order On-Line
Second Release
Part #: Bac-62255 - Union Pacific - Road #: 6900 - EMD DD40AX Centennial - with DCC On Board™

Click picture to see large view
Council Bluffs, Iowa, USA


March 14, 2005


UP 6900 has just been
repainted and is awaiting
being moved to the
new display at the new
Kenefick Parkin Omaha,
Nebraska.

Omaha, NE

April 1, 1969

UP 6900
Company shot
Click
Here For
Pricing

Click for availability
and to place a
Secure Order On-Line
Part #: Bac-62256 - Union Pacific - Road #: 6910 - EMD DD40AX Centennial - with DCC On Board™

Click
Here For
Pricing

Click for availability
and to place a
Secure Order On-Line
Part #: Bac-62257 - Union Pacific - Road #: 6919 - EMD DD40AX Centennial - with DCC On Board™

Click picture to see large view

Permission to use this photo was granted by
the photographer Joe Blackwell.
The picture can be found at www.railpictures.net,
a great place to research locomotives!
Blue Cut, California, USA

July, 1974


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Here For
Pricing

Click for availability
and to place a
Secure Order On-Line
Part #: Bac-62258 - Union Pacific - Road #: 6942 - EMD DD40AX Centennial - with DCC On Board™
Click picture to see large view
Click
Here For
Pricing

Click for availability
and to place a
Secure Order On-Line
First Release
Part #: Bac-62251 - Union Pacific - Road #: 6932 - EMD DD40AX Centennial - with DCC On Board™
Click picture to see large view
Click
Here For
Pricing

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and to place a
Secure Order On-Line
Part #: Bac-62252 - Union Pacific - Road #: 6927 - EMD DD40AX Centennial - with DCC On Board™
Click picture to see large view
Click
Here For
Pricing

Click for availability
and to place a
Secure Order On-Line
Part #: Bac-62253 - Union Pacific - Road #: 6915 - EMD DD40AX Centennial - with DCC On Board™
Click picture to see large view
Click
Here For
Pricing

Click for availability
and to place a
Secure Order On-Line
Part #: Bac-62254 - Union Pacific - Road #: 6943 - EMD DD40AX Centennial - with DCC On Board™
Click picture to see large view
Click
Here For
Pricing

Click for availability
and to place a
Secure Order On-Line
Item Description Pricing Order Link

Stock Checks:

Inventory is a fluid commodity.  It changes by the hour (sometimes by the minute). To retain our pricing structure we maintain stock levels designed to turnover 6 times each year. We cannot guarantee stock status till we have an order in hand. All product is subject to prior sale. If we confirm that we have it, and, while we are waiting for the order it sells, you would be upset that we did not hold it.
We used to hold items but learned a VERY EXPENSIVE lesson. When we held items for customers’ orders, the order never materialized 80%+ of the time.  We lost out on the orders placed while the item was on hold.  Also we wasted staff time that could have been used to pull actual orders.
Since we are well known for finding older stock the fact that it may not be on our shelves at this minute does not mean we can’t get it. So, as we spell out on our terms pages, we don’t do it anymore.
You may, however, call in and we will tell you if the items are available and if possible attempt to locate what we don’t have while you are on the phone.

Last Update by:  GJC
Wednesday, July 24, 2013 2:05 PM

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