View source for CGR NG 0-6-0T

{{Short description|South African steam locomotive}}
{{Use dmy dates|date=November 2013}}
{{Use South African English|date=November 2013}}
{{Infobox locomotive
| name             = CGR NG 0-6-0T<br>South African NG 0-6-0T
| image            = CGR 0-6-0T no. 21 1902.jpg
| alt              =
| caption          = No. NG21 with a makeshift water tender
| hatnote          =
| powertype        = Steam
| designer         = [[Krauss-Maffei#Overview|Krauss & Company]]
| builder          = Krauss & Company
| ordernumber      =
| serialnumber     = 4830
| buildmodel       = Krauss XXVIIab
| builddate        = 1902
| totalproduction  =
| rebuilder        =
| rebuilddate      =
| numberrebuilt    =
| whytetype        = {{whyte|0-6-0|T}}
| uicclass         = Cn2t
| driver           = 3rd coupled axle
| gauge            = {{Track gauge|2ft|allk=on}} narrow
| leadingdiameter  =
| coupleddiameter  =
| trailingdiameter =
| tenderdiameter   =
| minimumcurve     =
| wheelbase        =
| engine total     =
| leading          =
| coupled          =
| trailing         =
| tender total     =
| tenderbogie      =
| wheelspacing     =
| length           =
| over couplers    =
| over bufferbeams =
| pivotcentres     =
| width            =
| height           =
| frametype        =
| axleload         =
| leadingbogie/pony=
| coupled all      =
| coupled 1        =
| coupled 2        =
| coupled 3        =
| coupled 4        =
| coupled 5        =
| coupled 6        =
| coupled 7        =
| coupled 8        =
| trail bogie/pony =
| tenderbogieload  =
| tenderaxle       =
| weightondrivers  = {{convert|9|lt|kg|sigfig=4|abbr=on}}
| locoweight       = {{convert|9|lt|kg|sigfig=4|abbr=on}}
| tenderweight     =
| locotenderweight =
| tendertype       =
| fueltype         = Coal
| fuelcap          =
| watercap         =
| tendercap        =
| sandcap          =
| boiler           =
| pitch            =
| boilertype       =
| diameterinside   =
| lengthinside     =
| smalltubediameter=
| largetubediameter=
| fireboxtype      = Round-top
| boilerpressure   = {{convert|160|psi|kPa|0|abbr=on}}
| safetyvalvetype  =
| feedwaterheater  =
| firearea         =
| totalsurface     =
| tubearea         =
| fluearea         =
| tubesandflues    =
| fireboxarea      =
| superheatertype  =
| superheaterarea  =
| cylindercount    = Two
| cylindersize     = {{convert|9+7/8|in|mm|0|abbr=on}} bore<br>{{convert|12|in|mm|0|abbr=on}} stroke
| frontcylindersize=
| rearcylindersize =
| hpcylindersize   =
| lpcylindersize   =
| valvegear        = [[Stephenson valve gear|Stephenson]]
| valvetype        =
| valvetravel      =
| valvelap         =
| valvelead        =
| transmission     =
| trainheating     =
| locobrakes       =
| trainbrakes      =
| safety           =
| coupling         = [[Railway coupling#Bell-and-hook coupler|Bell-and-hook]]
| maxspeed         =
| poweroutput      =
| tractiveeffort   = {{convert|6207|lbf|kN|abbr=on}} @ 75%
| factorofadhesion =
| locobrakeforce   =
| operator         = [[Cape Government Railways]]<br>[[South African Railways]]
| operatorclass    =
| powerclass       =
| numinclass       = 1
| fleetnumbers     = SAR NG21
| officialname     =
| nicknames        =
| axleloadclass    =
| locale           =
| deliverydate     = 1902
| firstrundate     = 1903
| lastrundate      =
| withdrawndate    = 1918
| preservedunits   =
| restoredate      =
| scrapdate        =
| currentowner     =
| disposition      =
| notes            =
}}
The '''Cape Government Railways NG 0-6-0T''' of 1903 was a South African steam locomotive from the pre-[[Union of South Africa|Union]] era in the [[Cape Colony|Cape of Good Hope]].
In 1902, [[Orenstein & Koppel|Arthur Koppel]], acting as agent, imported a single {{whyte|0-6-0|T}} narrow gauge tank steam locomotive for a customer in Durban. It was then purchased by the Cape Government Railways and used as construction locomotive on the [[Avontuur Railway|Avontuur branch]] from 1903. In 1912, this locomotive was assimilated into the South African Railways and in 1917 it was sent to German South West Africa during the [[First World War]] campaign in that territory.<ref name="SAR Renumber">Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer's Office, Pretoria, January 1912, p. 47 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)</ref><ref name="Paxton-Bourne">{{Paxton-Bourne|pages=111-112, 157}}</ref><ref name="SAR&H Apr 1944">Espitalier, T.J.; Day, W.A.J. (1944). ''The Locomotive in South Africa - A Brief History of Railway Development. Chapter II - The Cape Government Railways'' (Continued). South African Railways and Harbours Magazine, April 1944. pp. 253-257.</ref><ref name="Dulez 150">{{Dulez 150|page=232}}</ref>
==Manufacturer==
A single locomotive, built by [[Krauss-Maffei#Overview|Krauss & Company]] in 1902, was imported in 1902 by [[Orenstein & Koppel|Arthur Koppel]], acting as agent. It was purchased by the [[Cape Government Railways]] (CGR) and placed in service from 1903 as construction locomotive on the narrow gauge [[Avontuur]] branch out of [[Port Elizabeth]], where it was colloquially known as the ''Koppel engine''.<ref name="Paxton-Bourne"/><ref name="SAR&H Apr 1944"/><ref name="Dulez 150"/>
The locomotive was a Krauss type XXVIIab with works number 4830, which was unique in South Africa. It appears to be identical to half a [[South West African Zwillinge|Zwillinge]], the twin ''Feldbahn'' locomotives built by the same firm and others for the ''Swakopmund-Windhuk Staatsbahn'' in [[German South West Africa]], except that the cab was enclosed at the rear. The engine had [[Stephenson valve gear|outside Stephenson valve gear]] and was a coal burner, fitted with a balloon chimney to accommodate a spark arrester.<ref name="SAR&H Apr 1944"/><ref name="Schmeiser">Schmeiser, Bernard (1977). ''Krauss-Lokomotiven''. Verlag Josef Otto Slezak, Wien. {{ISBN|3-900134-36-7}}.</ref><ref name="Soul of a Railway 3-1">[https://sites.google.com/site/soulorailway/home/system-3-1/system-3 Soul of A Railway - System 3: Cape Midland, based in Port Elizabeth – Part 1: The Port Elizabeth Narrow Gauge – Introduction - Caption 2] {{Webarchive|url=https://web.archive.org/web/20210724042105/https://sites.google.com/site/soulorailway/home/system-3-1/system-3 |date=24 July 2021 }} (Accessed on 10 December 2016)</ref>
==Service==
===Cape Government Railways===
The photograph shows the locomotive hauling a makeshift water tender, consisting of two water tanks on a two-axle goods wagon, with a water pipe strung along the locomotive's side to feed water into the side tanks on the engine. After completion of the Avontuur line, the locomotive was retained in service since it could haul three passenger coaches more economically than a petrol railcar.<ref name="Paxton-Bourne"/><ref name="SAR&H Apr 1944"/><ref name="Dulez 150"/>
===South African Railways===
When the [[Union of South Africa]] was established on 31 May 1910, the three Colonial government railways (CGR, [[Natal Government Railways]] and [[Central South African Railways]]) were united under a single administration to control and administer the railways, ports and harbours of the Union. Although the South African Railways and Harbours came into existence in 1910, the actual classification and renumbering of all the rolling stock of the three constituent railways were only implemented with effect from 1 January 1912.<ref name="SAR Renumber"/><ref name="SAR History">''The South African Railways - Historical Survey''. Editor George Hart, Publisher Bill Hart, Sponsored by Dorbyl Ltd., Published c. 1978, p. 25.</ref>
When it came onto the roster of the South African Railways (SAR) in 1912, the locomotive was numbered NG21, with the letters NG identifying it as a narrow gauge locomotive in the SAR registers.<ref name="SAR Renumber"/><ref name="Paxton-Bourne"/><ref name="SAR&H Apr 1944"/><ref name="Dulez 150"/>
===First World War===
In 1915, shortly after the outbreak of the First World War, the [[German South West Africa]] colony was occupied by the Union Defence Forces. Since a large part of the territory's railway infrastructure was destroyed or damaged by retreating German forces, an urgent need arose for locomotives for use on the narrow gauge lines in that territory. In 1917, no. NG21 was transferred to the Defence Department for service in South West Africa. It did not return to South Africa after the war and was withdrawn from service in 1918.<ref name="Paxton-Bourne"/><ref name="Dulez 150"/><ref name="SAR&H Dec 1947">Espitalier, T.J.; Day, W.A.J. (1947). ''The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued).'' South African Railways and Harbours Magazine, December 1947. p. 1033.</ref>
==References==
{{Commons category|CGR NG 0-6-0T 1903|CGR NG 0-6-0T|position=left}}
{{Reflist|30em}}
{{Locomotives of the Cape Government Railways}}
{{Locomotives of South Africa}}
[[Category:CGR locomotives|0430]]
[[Category:Individual locomotives of South Africa|0430]]
[[Category:0-6-0T locomotives]]
[[Category:C locomotives]]
[[Category:Krauss locomotives]]
[[Category:2 ft gauge locomotives]]
[[Category:Railway locomotives introduced in 1903]]
[[Category:1903 in South Africa]]
[[Category:Scrapped locomotives]]