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United States Army Locomotives

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Model: Railpower GG20B, Gen. I - 3 units
2,000 hp rated hybrid locomotive, engines: 1 small genset plus battery bank, on 4 axle GP-type frame.
1st generation version of GG20B, not upgraded by Railpower.

1GS7B
Roster:
Unit
Number:

Owner:
Donor
Unit:
Originally
Built:
Converted
At:
New Build
Date:
Serial
Number:
Used
At:
 
USAX 6000 US Army PAL 8324 April 1956 MPI Boise June 2005 2RPGGB20752000011 Fort Lewis, WA 1, 2, A, C
USAX 6001 US Army PAL 8332 Nov. 1953 MPI Boise June 2005   Fort Sill, OK 1, 2, C
USAX 6002 US Army TM 855 Jan. 1963 MPI Boise June 2005   USMC Logistics Yermo, CA 1, 2, B, C

General Notes:
1. Three GG20B units built in June-July 2005 by Motive Power Inc. (Wabtec) in Boise, ID. First unit (6000) completed 6-13-2005 and shipped to Fort Lewis, WA (near Tacoma). From RailPower website. (http://www.railpower.com/usarmy.html)
2. Initial deployment from Extra 2200 South and other sources: USAX 6000 to Fort Lewis, WA; USAX 6001 to the Sierra Army Depot in Hurlong, CA; USAX 6002 to the USMC Logistics Center in Yermo, CA. From Extra 2000 South #128, page 21. 6001 later moved to Fort Sill, OK.

Notes:
A. Frame number checked by webmaster during visit in early 2006.
B. Actual unit number confirmed by frame number verification by Bob Lehmuth Dec. 2006 with much thanks. This confirmed that the 6002 was built using TM 855 as a core, despite earlier reports that that unit had been used as the core for 6001.
C. All three units have now (Autumn 2009) been moved to Hill Air Force Base near Ogden, UT for work. An Army source expected them to be converted to gensets, but nothing firm has been released by the Army yet. Units previously had been moved to Hill for warranty replacement for the batteries in early 2006. Update: According to sources at the DGRC, these units will be parted out and scrapped unless another solution is found.

History:

Unit
Number
Core Unit
Number
Core Unit
Model
Build
Date
Builder's
Number
Frame
Number
Orig.
Number
2nd
Number
3rd
Number
4th
Number
5th
Number

Notes
USAX 6000 PAL 8324 EMD/IC GP10 April 1956 21376 5436-58 SP 5683 SP 3516 IC 8390 PAL 8324   A
USAX 6001 PAL 8332 EMD/IC GP8 Nov. 1953 19019 5231-6 DT&I 969 ICG 91 IC 7740 PAL 8332   B
USAX 6002 TM 855 EMD GP18 Jan. 1963 27857 5646-2 TM 855         C

Notes:
A. USAX 6000 history from Extra 2200 South, #127. Additional build info filled in from the Illinois Central All Time Dieslel Rosters (http://www.illinoiscentral.net/rosters/alltimeroster.html). History info filled in by cross-referencing the frame number using the data on the Unofficial EMD Home Page (http://www.trainweb.org/emdloco/).
B. USAX 6001 history from Extra 2200 South, #127. Additional build info filled in from the Illinois Central All Time Dieslel Rosters (http://www.illinoiscentral.net/rosters/alltimeroster.html). Actual unit verified by process of elimination because of frame number verifications of 6000 and 6002.
C. Unit history from Extra 2200 South, #127. Additional build info filled in from the Kansas City Southern Historical Society rosters used with much appreciation.

Model: Railpower GG20B, Gen. IV - 2 units
2,000 hp rated hybrid locomotive, engines: 1 small genset plus battery bank, on 4 axle GP-type frame.
3rd generation version of GG20B, upgraded to 4th generation specs by Railpower.

1GS7B
Roster:
Unit
Number:

Owner:
Donor
Unit:
Originally
Built:
Converted
At:
New Build
Date:
Serial
Number:
Used
At:
1, 2, A, C
USAX 6003 US Army WC 2057 March 1964 Super Steel June 2006   Hill AFB, Ogden, UT 1, A
USAX 6004 US Army CP 1552 1955 Alstom AB May 2006   Fort Bliss, TX 1, B

General Notes:
1. Can be called a Phase III body style, with larger vents over the batteries. There are some minor component differences over earlier versions as well. 3rd Generation units according to Railpower. Both units upgraded to 4th gen. specs after recall. 6004 was the 1st RP unit to be upgraded, prior to delivery.

Notes:
A. 6003 shipped sometime in July, destination unkown. Unit is on UP trace system, but not showing up. From info collected at source, and UP trace. Reportedly headed to Fort McCoy near Sparta, WI. From Robert Dennis. Still at Ft. McCoy per sightings in Sept. 2009. Reported moved to Hill AFB by contact at the DGRC in December 2009.
B. USAX 6004 was originally built as CP 1702, among the first of a 35-unit order by Canadian Pacific. CP 1700-1706 were to be constructed in 2005 for testing. From CP Railway press release 3-14-2005. Order cancelled and CP 1700-1704 were returned to Railpower and resold. CP 1705 was built but not yet delivered. From Railpower press release dated Dec. 5, 2006. Units dispersed as follows: CP 1700 to Amtrak 599, RPRX 2406; CP 1701 to RPRX 1701; CP 1702 to USAX 6004; CP 1703 to BP Amoco 1703; CP 1704 to BNSF 1205; CP 1705 to RPRX 1705, NITX 1705.

History:

Unit
Number
Core Unit
Number
Core Unit
Model
Build
Date
Builder's
Number
Frame
Number
Orig.
Number
2nd
Number
3rd
Number
4th
Number
5th
Number

Notes
USAX 6003 WC 2057 EMD GP35m March? 1964 29824 7781-5 T&P 644 MP 2451 MP 2613 WC 4009 WC 2057 A
USAX 6004 CP 1552 GMD GP9u 1955 A704 C187-? CP 8506 CP 1552 CP 1702 USAX 6004   B

Notes:
A. Original unit number WC 2057 from Extra 2200 South #129, page 21. Extra information from the Unofficial EMD Homepage (http://www.trainweb.org/emdloco/) Original build date unconfirmed, but locomotives on both sides of this unit in the order were built in March, 1964. Core number of USAX 1876 originally reported, but this proved to be incorrect. USAX 1876 was at CAD at the time of 6003's conversion.
B. Donor unit history from the CP Locomotive Roster and Photo Archives.

Model: NRE 3GS21B - 7 units
2,100 hp 3-engine genset locomotive, engines: 3 - Cummins QSK19 (700hp each), on 4 axles.

1GS7B
Roster:
Unit
Number:

Owner:
Donor
Unit:
Originally
Built:
Converted
At:
New Build
Date:
Serial
Number:
Used
At:
1, 2, A, C
USAX 6500 US Army New N/A Mt. Vernon Nov. 2007 058-0111 Fort Bliss, TX 1, 2, A
USAX 6501 US Army New N/A Mt. Vernon Dec. 2007 058-0112 Fort Bliss, TX 1, 2, A
USAX 6502 US Army New N/A Mt. Vernon Nov. 2008 058-0167 Fort Lewis, WA 3, 4, B
USAX 6503 US Army New N/A Mt. Vernon Nov. 2008 058-0168 Fort Lewis, WA 3, 4, B
USAX 6504 US Army New N/A Mt. Vernon Dec. 2008 058-0185 Fort Riley, KS 3, 4, C
USAX 6505 US Army New N/A   Dec. 2008? 058-0183 Fort Hood, TX 3, 5, C
USAX 6506 US Army New N/A Paducah Dec. 2008 058-0176 Fort Carson, CO 3, 4, C

General Notes:
1. According to a recent press release from NRE, the US Army has ordered a pair of 3GS21Bs for use at Fort Hood, TX. (The press release is not archived online.) they didn't say anything about NRE gensets. Nevertheless, news that they were ordering two 3GS21B's and one 3GS21C was reported in the Trains Magazine special "Locomotive 2007" edition.
2. 6500-6501, Build location and builder's plate data confirmed by Mark Mautner.
3. Later unit orders (6502-6503 and 6504-6506) built to same spec as 6500-6501 despite new variant of hood design, etc. being in regular production.
4. 6502-6503, plate check performed by JMoore. 6504, plate info relayed via KenZ 2nd hand. 6506, plate check performed by Colorado Zephyr. Info in all three cases taken from emissions decal on units because they did not have builder's plates installed.
5. 6506 Plate Info provided by Sean Graham-White.

Notes:
A. Because the Army wanted their new units to be delivered quickly, two locomotives from the BNSF order were diverted to fill this order. As such, the 6500 and 6501 are built to BNSF specs. From various discussions and on-site confirmation.
B. Deployment information from on-site verification by webmaster.
C. Deployment information from a press release by NRE and from on-site reports by COZephyr, Nathan Zachmann, and others.

Photos: (Click to enlarge)


USAX 6000
GG20B
MPEX 244 MPEX 244 MPEX 244 MPEX 244 MPEX 244
  MPEX 244 MPEX 244 MPEX 244 MPEX 244  

USAX 6001

GG20B
MPEX 244 MPEX 244 MPEX 244 MPEX 244 MPEX 244

USAX 6002

GG20B
MPEX 244 MPEX 244      

USAX 6003

GG20B
MPEX 244 MPEX 244 MPEX 244 MPEX 244  

USAX 6004

GG20B
MPEX 244 MPEX 244 MPEX 244 MPEX 244 MPEX 244

USAX 6500

3GS21B
MPEX 4133 MPEX 4133 MPEX 4133 MPEX 4133  

USAX 6501

3GS21B
MPEX 4133 MPEX 4133 MPEX 4133    

USAX 6502

3GS21B
MPEX 4133 MPEX 4133 MPEX 4133 MPEX 4133 MPEX 4133

USAX 6503

3GS21B
MPEX 4133 MPEX 4133 MPEX 4133 MPEX 4133  

USAX 6504

3GS21B
MPEX 4133        

USAX 6505

3GS21B
MPEX 4133 MPEX 4133 Railpictures.net Photo    

USAX 6506
3GS21B
MPEX 4133 MPEX 4133      

For corrections, questions or to contribute photos, please e-mail me at: potb101@aim.com. Thanks!

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