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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
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Third
Release:
Announced: 07-18-2013
Orders Due: ASAP
ETA: October 2013
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Second
Release:
Announced: 3-26-10
Orders Due: ASAP
ETA: DELIVERED
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First
Release:
Announced: 07-18-08
Orders Due: ASAP
ETA: DELIVERED
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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.) |
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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 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
EMD DD40AX
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.
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
Click on any photo for large view |
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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. " |
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Item Description |
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Third Release
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Part
#: Bac-65151 - Union Pacific - Road #: 6900 - EMD DD40AX Centennial
- with SoundTraxx® Sound Value™ DCC On Board™
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Part
#: Bac-65152 - Union Pacific - Road #: 6929 - EMD DD40AX Centennial
- with SoundTraxx® Sound Value™ DCC On Board™
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Part
#: Bac-65153 - Union Pacific - Road #: 6940 - EMD DD40AX Centennial
- with SoundTraxx® Sound Value™ DCC On Board™
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Second Release
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Part
#: Bac-62255 - Union Pacific - Road #: 6900 - EMD DD40AX Centennial
- with DCC On Board™
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Part
#: Bac-62256 - Union Pacific - Road #: 6910 - EMD DD40AX Centennial - with DCC On Board™
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Click picture to see large view |
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(HO MODEL SHOWN) |
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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!
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Blue Cut, California, USA
July, 1974
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Part
#: Bac-62258 - Union Pacific - Road #: 6942 - EMD DD40AX Centennial - with
DCC On Board™
Click
picture to see large view
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First Release
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Part
#: Bac-62251 - Union Pacific - Road #: 6932 - EMD DD40AX Centennial
- with DCC On Board™
Click picture to see large view
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Part
#: Bac-62252 - Union Pacific - Road #: 6927 - EMD DD40AX Centennial - with DCC On Board™
Click picture to see large view |
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Part
#: Bac-62253 - Union Pacific - Road #: 6915 - EMD DD40AX Centennial - with DCC On Board™
Click picture to see large view |
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Part
#: Bac-62254 - Union Pacific - Road #: 6943 - EMD DD40AX Centennial - with
DCC On Board™
Click picture to see large view |
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Item Description |
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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 |
Tuesday, June 18, 2019 4:10 PM |
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