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{{Infobox locomotive
{{Unreferenced|date=June 2019}}
| name = EMD SD40X
[[File:KCS 701 EMD SD40X.jpg|thumb|right|Kansas City Southern 701, an SD40X]]
| bgcolor =
An '''EMD SD40X''' is a 6-axle experimental [[diesel-electric locomotive]] built by [[Electro-Motive Diesel|General Motors Electro-Motive Division]] between 1964 and 1965. 9 examples of this locomotive were built for test purposes to test the new [[EMD 645|645-series]] prime mover 16-645E3. After testing, eight were sold to the [[Union Pacific Railroad]] and one example to the [[Gulf, Mobile and Ohio Railroad]]. This locomotive is an experimental testbed for the production [[EMD SD40|SD40]], but built on the shorter [[EMD SD35|SD35]] frame. This locomotive was also known as an SD35X.
| color =
| image = File:KCS 701 EMD SD40X.jpg
| alt =
| caption = Kansas City Southern 701
| powertype = Diesel-electric
| designer =
| builder = [[Electro-Motive Division]]
| ordernumber =
| serialnumber =
| buildmodel =
| builddate = 1964-1965<br>1979
| totalproduction = 13
| rebuilder =
| rebuilddate =
| numberrebuilt =
| aarwheels = C-C
| uicclass =
| Britishclass = <!-- e.g. [[Bo-Bo]] [[1Co+Co1]] -->
| DRGtype =
| driver = <!-- e.g. 1st, 2nd or 3rd coupled axle -->
| gauge = {{track gauge|ussg}}
| trucks =
| bogies =
| leadingdiameter =
| wheeldiameter =
| trailingdiameter =
| carrydiameter =
| minimumcurve =
| wheelbase =
| wheelspacing = <!-- bogies or coupled wheels with asymmetrical wheel spacing -->
| engine total =
| leading =
| drivers = <!-- USA terminology -->
| coupled = <!-- British terminology -->
| trailing =
| truck = <!-- USA terminology diesels and electrics -->
| bogie = <!-- British terminology diesels and electrics -->
| tender total =
| tendertruck = <!-- USA terminology -->
| tenderbogie = <!-- British terminology -->
| racksystem =
| pivotcentres = <!-- Garratts, diesels and electrics -->
| length =
| over couplers =
| over headstocks =
| body =
| over buffers =
| width =
| height =
| axleload =
| leadingbogie/pony= <!-- load on leading bogie or pony wheel -->
| weightondrivers =
| trail bogie/pony = <!-- load on trailing bogie or pony wheel -->
| locoweight =
| emptyweight =
| serviceweight =
| fueltype =
| fuelcap =
| lubecap =
| coolantcap =
| watercap =
| sandcap =
| powersupply =
| consumption =
| watercons =
| primemover = [[EMD 645|645-series]] 16-645E3
| rpmrange =
| rpmrange low =
| rpmrange idle =
| rpmrange max =
| enginetype =
| aspiration =
| displacement = <!-- per cylinder -->
| alternator =
| generator =
| tractionmotors =
| t/m amps 1 hr = <!-- Power output rating per motor -->
| t/m amps cont = <!-- Power output rating per motor -->
| headendpower =
| cylindercount =
| cylindersize =
| transmission =
| runningsteps =
| runningstepswitch =
| gear ratio =
| multipleworking =
| trainheating =
| locobrakes =
| dynamicpeakeffort=
| locobrakeforce =
| trainbrakes =
| reservoircap =
| compressorcap =
| exhaustercap =
| coupling =
| maxspeed =
| poweroutput = {{convert|3500|hp|kW|abbr=on}} (KCS locomotives)
| poweroutput start=
| poweroutput 1 hr=
| poweroutput cont=
| powerindex =
| tractiveeffort =
| t/e starting =
| t/e 1 hr =
| t/e continuous =
| factorofadhesion =
| f/adh starting =
| f/adh 1 hr =
| f/adh continuous=
| safety =
| operator =
| operatorclass =
| powerclass =
| numinclass =
| fleetnumbers =
| officialname =
| nicknames =
| axleloadclass =
| locale =
| deliverydate =
| firstrundate =
| lastrundate =
| retiredate =
| withdrawndate =
| preservedunits =
| restoredate =
| scrapdate =
| currentowner =
| disposition =
| notes =
}}
The '''EMD SD40X''' is a 6-axle experimental [[diesel-electric locomotive]] built by [[Electro-Motive Diesel|General Motors Electro-Motive Division]] between 1964 and 1965. Nine examples of this locomotive were built for test purposes to test the new [[EMD 645|645-series]] prime mover 16-645E3. After testing, eight were sold to the [[Union Pacific Railroad]] and one example to the [[Gulf, Mobile and Ohio Railroad]]. This locomotive is an experimental testbed for the production [[EMD SD40|SD40]], but built on the shorter [[EMD SD35|SD35]] frame.{{sfn|Danneman|2024|page={{Page needed|date=November 2024|reason=Google Books didn't provide the page number.}}}} This locomotive was also known{{By whom|date=November 2024}} as an SD35X.{{Citation needed|date=November 2024}}


The designation SD40X was also given to an experimental version of the [[EMD SD50|SD50]], built by EMD on an [[EMD SD40-2|SD40-2]] frame. 4 examples of this SD40X were built in 1979 and were delivered to the [[Kansas City Southern Railway|Kansas City Southern]] as KCS 700-703. The Kansas city southern units have been retired 1 has been sold the progress rail the other 2 have been scrapped The unit sold to the gulf mobile and Ohio is preserved at the Monticello railroad museum And EMD kept 1 of the SD40X locomotives to use as a tester it was scrapped in 2008
The designation SD40X was also given to an experimental version of the [[EMD SD50|SD50]], built by EMD on an [[EMD SD40-2|SD40-2]] frame. Four examples of this SD40X were built in 1979 and were delivered to the [[Kansas City Southern Railway|Kansas City Southern]] as KCS 700-703.{{sfn|Soloman|2000|page=162}}

== References ==
{{reflist}}
* {{cite book |last=Danneman |first=Mike |author-link= |date=15 Jan 2024 |title=EMD Locomotives |url=https://books.google.com/books?id=1nLsEAAAQBAJ&dq=emd+sd40x&pg=PT66 |location= |publisher=Amberley Publishing Limited |page= |isbn=978-1398103207}}
* {{cite book |last=Soloman |first=Brian |author-link= |date=2000 |title=American Diesel Locomotives |url=https://books.google.com/books?id=bVEhihy7tKEC&dq=emd+sd40x&pg=PA162 |location= |publisher=Voyageur Press |page= |isbn=1610606051}}


==External links==
==External links==
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{{EMD SDs}}
{{EMD SDs}}
{{diesel-loco-stub}}

[[Category:Electro-Motive Division locomotives|SD40X]]
[[Category:Electro-Motive Division locomotives|SD40X]]
[[Category:C-C locomotives]]
[[Category:C-C locomotives]]
[[Category:Experimental locomotives]]
[[Category:Experimental locomotives]]
[[Category:Diesel-electric locomotives of the United States]]
[[Category:Diesel–electric locomotives of the United States]]
[[Category:Railway locomotives introduced in 1964]]
[[Category:Railway locomotives introduced in 1964]]


{{diesel-loco-stub}}

Latest revision as of 06:31, 29 November 2024

EMD SD40X
Kansas City Southern 701
Type and origin
Power typeDiesel-electric
BuilderElectro-Motive Division
Build date1964-1965
1979
Total produced13
Specifications
Configuration:
 • AARC-C
Gauge4 ft 8+12 in (1,435 mm)
Prime mover645-series 16-645E3
Performance figures
Power output3,500 hp (2,600 kW) (KCS locomotives)

The EMD SD40X is a 6-axle experimental diesel-electric locomotive built by General Motors Electro-Motive Division between 1964 and 1965. Nine examples of this locomotive were built for test purposes to test the new 645-series prime mover 16-645E3. After testing, eight were sold to the Union Pacific Railroad and one example to the Gulf, Mobile and Ohio Railroad. This locomotive is an experimental testbed for the production SD40, but built on the shorter SD35 frame.[1] This locomotive was also known[by whom?] as an SD35X.[citation needed]

The designation SD40X was also given to an experimental version of the SD50, built by EMD on an SD40-2 frame. Four examples of this SD40X were built in 1979 and were delivered to the Kansas City Southern as KCS 700-703.[2]

References

[edit]
  • Danneman, Mike (15 Jan 2024). EMD Locomotives. Amberley Publishing Limited. ISBN 978-1398103207.
  • Soloman, Brian (2000). American Diesel Locomotives. Voyageur Press. ISBN 1610606051.
[edit]