| 词条 | South African Class GC 2-6-2+2-6-2 | |
| 释义 |
| name = South African Class GC 2-6-2+2-6-2 | image = SAR Class GC 2182 (2-6-2+2-6-2).jpg | alt = | caption = Class GC no. 2182, c. 1924 | hatnote = | powertype = Steam | designer = Beyer, Peacock and Company | builder = Beyer, Peacock and Company | ordernumber = | serialnumber = 6187-6192 | buildmodel = Class GC | builddate = 1924 | totalproduction = 6 | rebuilder = | rebuilddate = | numberrebuilt = | whytetype = 2-6-2+2-6-2 (Double Prairie) | uicclass = 1'C1'+1'C1'h4 | driver = 3rd & 4th coupled axles | gauge = {{Track gauge|Cape|allk=on}} | leadingdiameter = {{convert|28+1/2|in|mm|0|abbr=on}} | coupleddiameter = {{convert|42+3/4|in|mm|0|abbr=on}} | trailingdiameter = {{convert|28+1/2|in|mm|0|abbr=on}} | tenderdiameter = | minimumcurve = | wheelbase = {{convert|56|ft|8|in|mm|0|abbr=on}} | engine total = {{convert|17|ft|8+1/4|in|mm|0|abbr=on}} each | leading = | coupled = {{convert|8|ft|mm|0|abbr=on}} each | trailing = | tender total = | tenderbogie = | pivotcentres = {{convert|29|ft|8|in|mm|0|abbr=on}} | wheelspacing = | length = | over couplers = {{convert|63|ft|3+3/4|in|mm|0|abbr=on}} | over bufferbeams= | width = | height = {{convert|12|ft|3|in|mm|0|abbr=on}} | frametype = Plate | axleload = {{convert|11|lt|16|lcwt|kg|sigfig=4|abbr=on}} | leadingbogie/pony= {{convert|8|lt|13|lcwt|kg|sigfig=4|abbr=on}} front {{convert|8|lt|9|lcwt|kg|sigfig=4|abbr=on}} rear | coupled all = | coupled 1 = {{convert|10|lt|16|lcwt|kg|sigfig=4|abbr=on}} | coupled 2 = {{convert|10|lt|14|lcwt|kg|sigfig=4|abbr=on}} | coupled 3 = {{convert|10|lt|14|lcwt|kg|sigfig=4|abbr=on}} | coupled 4 = {{convert|11|lt|15|lcwt|kg|sigfig=4|abbr=on}} | coupled 5 = {{convert|11|lt|16|lcwt|kg|sigfig=4|abbr=on}} | coupled 6 = {{convert|10|lt|11|lcwt|kg|sigfig=4|abbr=on}} | coupled 7 = | coupled 8 = | trail bogie/pony= {{convert|6|lt|8|lcwt|kg|sigfig=4|abbr=on}} front {{convert|7|lt|2|lcwt|kg|sigfig=4|abbr=on}} rear | tenderbogieload = | tenderaxle = | weightondrivers = {{convert|66|lt|6|lcwt|kg|sigfig=4|abbr=on}} | locoweight = {{convert|96|lt|18|lcwt|kg|sigfig=4|abbr=on}} | tenderweight = | locotenderweight = | tendertype = | fueltype = Coal | fuelcap = {{convert|7|lt|t|1|abbr=on}} | watercap = {{convert|2000|impgal|l|sigfig=3|abbr=on}} front {{convert|1000|impgal|l|sigfig=3|abbr=on}} rear | tendercap = | sandcap = | fireboxtype = Belpaire | firearea = {{convert|34|sqft|m2|abbr=on}} | boiler = | boilertype = | pitch = {{convert|7|ft|4+3/8|in|mm|0|abbr=on}} | diameterinside = {{convert|5|ft|2|in|mm|0|abbr=on}} | lengthinside = {{convert|11|ft|3+5/8|in|mm|0|abbr=on}} | smalltubediameter= 149: {{convert|2|in|mm|0|abbr=on}} | largetubediameter= 24: {{convert|5+1/2|in|mm|0|abbr=on}} | boilerpressure = {{convert|180|psi|kPa|0|abbr=on}} | safetyvalvetype = Ramsbottom | feedwaterheater = | totalsurface = {{convert|1423|sqft|m2|abbr=on}} | tubearea = {{convert|1266.2|sqft|m2|abbr=on}} | fluearea = | tubesandflues = | fireboxarea = {{convert|156.8|sqft|m2|abbr=on}} | superheatertype = | superheaterarea = {{convert|247|sqft|m2|abbr=on}} | generator = | cylindercount = Four | cylindersize = {{convert|14|in|mm|0|abbr=on}} bore {{convert|23|in|mm|0|abbr=on}} stroke | frontcylindersize= | rearcylindersize = | hpcylindersize = | lpcylindersize = | valvegear = Walschaerts | valvetype = Piston | valvetravel = | valvelap = | valvelead = | transmission = | trainheating = | locobrakes = | trainbrakes = | safety = | coupling = Johnston link-and-pin AAR knuckle (1930s) | maxspeed = | poweroutput = | tractiveeffort = {{convert|28470|lbf|kN|abbr=on}} @ 75% | factorofadhesion = | locobrakeforce = | operator = South African Railways | operatorclass = Class GC | powerclass = | numinclass = 6 | fleetnumbers = 2180-2185 | officialname = | nicknames = | axleloadclass = | locale = | deliverydate = 1924-1925 | firstrundate = 1924 | lastrundate = | withdrawndate = 1962 | preservedunits = | restoredate = | scrapdate = | currentowner = | disposition = | notes = }} The South African Railways Class GC 2-6-2+2-6-2 of 1924 was an articulated steam locomotive. In 1924 and 1925, the South African Railways placed six Class GC Garratt articulated steam locomotives with a 2-6-2+2-6-2 Double Prairie type wheel arrangement in branch line service.[1][2][3] ManufacturerFollowing the good performance of the Class GB branch line Garratts, the first locomotive to be built to the specifications of Colonel F.R. Collins DSO after he was appointed as the Chief Mechanical Engineer of the South African Railways in 1922 was a heavier {{nowrap|2-6-2+2-6-2}} Double Prairie type Garratt, also intended for branch line work. It was designed and built to his specifications by Beyer, Peacock and Company in 1924.[1][2][3][4] CharacteristicsSix locomotives were delivered in 1924 and were erected in the Durban shops of the SAR. They were placed in service in 1924 and 1925, designated Class GC and numbered in the range from 2180 to 2185. The locomotives were superheated, with Belpaire fireboxes, plate frames, Walschaerts valve gear and piston valves.[1][2][3][5][6] Like its predecessor Class GB, the heavier Class GC was also a branch line locomotive and its maximum axle load of {{convert|11|lt|16|lcwt|kg|sigfig=4|abbr=off}} made it suitable for light rail. It was a more powerful development of the Class GB and was very similar to the Class GK Garratts which had been acquired by the New Cape Central Railway (NCCR) in 1923, but {{convert|2|lt|kg|sigfig=4|abbr=off}} heavier and with {{convert|1|in|mm|0|abbr=off}} smaller diameter cylinders with a {{convert|1|in|mm|0|abbr=off}} longer stroke.[3] ServiceThe locomotives were initially placed in service on the Natal South Coast line. Although they later also worked on other branch lines, they spent their entire working lives in Natal until they were withdrawn from service in 1962.[1][3] IllustrationReferences{{Commons category|South African Class GC (2-6-2+2-6-2)|South African Class GC 2-6-2+2-6-2|position=left}}1. ^1 2 3 {{Holland-Vol 2|pages=43-44}} {{Locomotives of South Africa}}2. ^1 2 Espitalier, T.J.; Day, W.A.J. (1945). The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued). South African Railways and Harbours Magazine, November 1945. p. 867. 3. ^1 2 3 4 {{Paxton-Bourne|page=89}} 4. ^{{Garratt Builders B}} 5. ^South African Railways & Harbours/Suid Afrikaanse Spoorweë en Hawens (15 Aug 1941). Locomotive Diagram Book/Lokomotiefdiagramboek, 3'6" Gauge/Spoorwydte. SAR/SAS Mechanical Department/Werktuigkundige Dept. Drawing Office/Tekenkantoor, Pretoria. p. 43. 6. ^South African Railways & Harbours/Suid Afrikaanse Spoorweë en Hawens (15 Aug 1941). Locomotive Diagram Book/Lokomotiefdiagramboek, 2'0" & 3'6" Gauge/Spoorwydte, Steam Locomotives/Stoomlokomotiewe. SAR/SAS Mechanical Department/Werktuigkundige Dept. Drawing Office/Tekenkantoor, Pretoria. pp. 6a-7a, 41, 43. 9 : Steam locomotives of South Africa|Beyer, Peacock locomotives|2-6-2+2-6-2 locomotives|1C1+1C1 locomotives|Garratt locomotives|Cape gauge railway locomotives|Railway locomotives introduced in 1924|1924 in South Africa|Scrapped locomotives |
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