South African Class 6H 4-6-0: Difference between revisions
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{{About|one of several different Cape Government Railways locomotive types to be designated "6th Class"|the others|Cape Government Railways 6th Class locomotives}} |
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{{Use dmy dates|date=November 2013}} |
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{{Use South African English|date=November 2013}} |
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{{Infobox locomotive |
{{Infobox locomotive |
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| name = South African Class 6H 4-6-0 |
| name = CGR 6th Class 4-6-0 1901 Neilson Reid<br>South African Class 6H 4-6-0 |
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| powertype = Steam |
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| image = Class 6H 629 (4-6-0) ex CGR 607-547.jpg |
| image = Class 6H 629 (4-6-0) ex CGR 607-547.jpg |
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| alt = |
| alt = |
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| caption = CGR 6th Class no. 607, then no. 547, SAR Class 6H no. 629, at Midlandia Loco, Noupoort |
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| imagesize = |
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| caption = Ex CGR Class 6 607, renumbered CGR 547 and later SAR Class 6H 629, at Midlandia Loco, Noupoort |
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| hatnote = |
| hatnote = |
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| |
| powertype = Steam |
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| designer = [[Cape Government Railways]]<br>(H.M. Beatty) |
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| builder = [[Neilson and Company#Turn of the century|Neilson, Reid & Company]] |
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| builder = [[Neilson and Company#Turn of the 20th century|Neilson, Reid and Company]] |
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| ordernumber = |
| ordernumber = |
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| serialnumber = 5871-5891 |
| serialnumber = 5871-5891 |
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| buildmodel = CGR |
| buildmodel = CGR 6th Class |
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| builddate = 1901 |
| builddate = 1901 |
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| totalproduction = 21 |
| totalproduction = 21 |
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| rebuilder = |
| rebuilder = |
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| rebuilddate = |
| rebuilddate = |
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| numberrebuilt = |
| numberrebuilt = |
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| whytetype = [[4-6-0]] |
| whytetype = [[4-6-0]] (Tenwheeler) |
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| |
| uicclass = 2'Cn2 |
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| |
| driver = 2nd coupled axle |
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| gauge = {{ |
| gauge = {{Track gauge|Cape|allk=on}} |
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| leadingdiameter = {{convert|28 |
| leadingdiameter = {{convert|28+1/2|in|mm|0|abbr=on}} |
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| |
| coupleddiameter = {{convert|54|in|mm|0|abbr=on}} |
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| trailingdiameter = |
| trailingdiameter = |
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| tenderdiameter = {{convert|33+1/2|in|mm|0|abbr=on}} as built<br>{{convert|34|in|mm|0|abbr=on}} retyred |
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| minimumcurve = |
| minimumcurve = |
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| wheelbase = |
| wheelbase = {{convert|45|ft|8+1/2|in|mm|0|abbr=on}} |
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| engine total = {{convert|20|ft|8|in|mm|0|abbr=on}} |
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| |
| leading = {{convert|5|ft|6|in|mm|0|abbr=on}} |
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| coupled = {{convert|11|ft|4|in|mm|0|abbr=on}} |
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| trailing = |
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| tender total = {{convert|14|ft|7|in|mm|0|abbr=on}} |
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| tenderbogie = {{convert|4|ft|7|in|mm|0|abbr=on}} |
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| pivotcentres = |
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| wheelspacing = '''1-2:''' {{convert|4|ft|9|in|mm|0|abbr=on}}<br>'''2-3:''' {{convert|6|ft|7|in|mm|0|abbr=on}} |
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| length = |
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| over couplers = {{convert|52|ft|11+3/4|in|mm|0|abbr=on}} |
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| over bufferbeams = |
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| width = |
| width = |
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| height = {{convert|12|ft|10|in| |
| height = {{convert|12|ft|10|in|mm|0|abbr=on}} |
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| |
| frametype = [[Locomotive frame#Plate frames|Plate]] |
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| axleload = {{convert|12 |
| axleload = {{convert|12|lt|11|lcwt|kg|sigfig=4|abbr=on}} |
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| |
| leadingbogie/pony= {{convert|11|lt|14|lcwt|kg|sigfig=4|abbr=on}} |
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| |
| coupled all = {{convert|12|lt|11|lcwt|kg|sigfig=4|abbr=on}} |
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| |
| coupled 1 = |
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| coupled 2 = |
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| locotenderweight = {{convert|91.4|LT|t|abbr=on}} |
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| coupled 3 = |
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| tendertype = '''XF''' - XC, XC1, XD, XE, XE1, XF, XF1, XF2, XJ, XM, XM1, XN2, XM3, XM4, XP1, XS permitted |
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| coupled 4 = |
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| coupled 5 = |
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| coupled 6 = |
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| coupled 7 = |
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| coupled 8 = |
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| trail bogie/pony = |
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| tenderbogieload = '''Bogie 1:''' {{convert|16|lt|15|lcwt|kg|sigfig=4|abbr=on}}<br>'''Bogie 2:''' {{convert|17|lt|8|lcwt|kg|sigfig=4|abbr=on}} |
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| tenderaxle = {{convert|8|lt|14|lcwt|kg|sigfig=4|abbr=on}} |
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| weightondrivers = {{convert|37|lt|13|lcwt|kg|sigfig=4|abbr=on}} |
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| locoweight = {{convert|49|lt|7|lcwt|kg|sigfig=4|abbr=on}} |
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| tenderweight = {{convert|34|lt|3|lcwt|kg|sigfig=4|abbr=on}} |
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| locotenderweight = {{convert|83|lt|10|lcwt|kg|sigfig=4|abbr=on}} |
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| tendertype = [[South African type XD tender|XD (2-axle bogies)]]<br>[[South African type XC tender|XC]], [[South African type XC1 tender|XC1]], XD, [[South African type XE tender|XE]], [[South African type XE1 tender|XE1]], [[South African type XF tender|XF]], [[South African type XF1 tender|XF1]], [[South African type XF2 tender|XF2]], [[South African type XJ tender|XJ]], [[South African type XM tender|XM]], [[South African type XM1 tender|XM1]], [[South African type XM2 tender|XM2]], [[South African type XM3 tender|XM3]], [[South African type XM4 tender|XM4]], [[South African type XP1 tender|XP1]], [[South African type XS tender|XS]] permitted |
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| fueltype = Coal |
| fueltype = Coal |
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| fuelcap = |
| fuelcap = {{convert|5|lt|10|lcwt|t|1|abbr=on}} |
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| |
| watercap = {{convert|2730|impgal|L|sigfig=3|abbr=on}} |
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| coolantcap = |
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| watercap = |
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| tendercap = |
| tendercap = |
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| sandcap = |
| sandcap = |
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| |
| fireboxtype = Round-top |
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| |
| firearea = {{convert|18|sqft|m2|abbr=on}} |
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| |
| boiler = |
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| |
| boilertype = |
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| pitch = {{convert|6|ft|10|in|mm|0|abbr=on}} |
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| primemover = |
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| diameterinside = {{convert|4|ft|6|in|mm|0|abbr=on}} |
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| rpmrange = |
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| lengthinside = {{convert|11|ft|2+1/8|in|mm|0|abbr=on}} |
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| enginetype = |
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| smalltubediameter= '''185:''' {{convert|1+7/8|in|mm|0|abbr=on}} |
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| aspiration = |
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| largetubediameter= |
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| displacement = |
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| boilerpressure = {{convert|180|psi|kPa|0|abbr=on}}<br>{{convert|170|psi|kPa|0|abbr=on}} adjusted |
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| alternator = |
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| safetyvalvetype = [[Safety valve#Ramsbottom safety valves|Ramsbottom]] |
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| generator = |
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| tractionmotors = |
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| boiler = {{convert|4|ft|6|in|m|3|abbr=on}} int dia<br>{{convert|11|ft|2|in|m|3|abbr=on}} int length |
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| boilerpressure = {{convert|180|psi|kPa|abbr=on|sigfig=3}} |
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| feedwaterheater = |
| feedwaterheater = |
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| |
| totalsurface = {{convert|1130|sqft|m2|abbr=on}} |
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| tubearea = |
| tubearea = {{convert|1015|sqft|m2|abbr=on}} |
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| fluearea = |
| fluearea = |
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| tubesandflues = |
| tubesandflues = |
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| fireboxarea = {{convert|115| |
| fireboxarea = {{convert|115|sqft|m2|abbr=on}} |
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| totalsurface = {{convert|1130|ft2|m2|3|abbr=on}} |
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| superheatertype = |
| superheatertype = |
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| superheaterarea = |
| superheaterarea = |
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| cylindercount = Two |
| cylindercount = Two |
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| cylindersize = {{convert|17|in|mm|abbr=on |
| cylindersize = {{convert|17|in|mm|0|abbr=on}} bore<br>{{convert|26|in|mm|0|abbr=on}} stroke |
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| frontcylindersize= |
| frontcylindersize= |
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| rearcylindersize = |
| rearcylindersize = |
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| valvelead = |
| valvelead = |
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| transmission = |
| transmission = |
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| multipleworking = |
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| topspeed = |
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| poweroutput = |
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| tractiveeffort = At 75% boiler pressure:<br>{{convert|18780|lbf|kN|3|abbr=on}} at {{convert|180|psi|kPa|abbr=on|sigfig=3}}<br>{{convert|17740|lbf|kN|3|abbr=on}} at {{convert|170|psi|kPa|abbr=on|sigfig=3}}<ref name="diagram-book"/> |
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| factorofadhesion = |
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| trainheating = |
| trainheating = |
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| locobrakes = |
| locobrakes = |
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| locobrakeforce = |
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| trainbrakes = |
| trainbrakes = |
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| safety = |
| safety = |
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| |
| coupling = [[Railway coupling#Johnston coupler|Johnston link-and-pin]]<br>[[Janney coupler|AAR knuckle]] (1930s) |
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| |
| maxspeed = |
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| poweroutput = |
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| tractiveeffort = {{convert|18780|lbf|kN|abbr=on}} @ 75%<br>{{convert|17740|lbf|kN|abbr=on}} adjusted |
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| factorofadhesion = |
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| locobrakeforce = |
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| operator = Cape Government Railways<br>[[South African Railways]] |
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| operatorclass = CGR 6th Class, SAR Class 6H |
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| powerclass = |
| powerclass = |
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| numinclass = 21 |
| numinclass = 21 |
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| |
| fleetnumbers = CGR 278-286, 601-612 (541-552)<br>SAR 614-634 |
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| officialname = |
| officialname = |
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| nicknames = |
| nicknames = |
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| firstrundate = 1901 |
| firstrundate = 1901 |
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| lastrundate = |
| lastrundate = |
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| withdrawndate = |
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| withdrawndate = 1973<ref name="Paxton-Bourne">{{Template:Paxton-Bourne|pages=41-43}}</ref> |
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| preservedunits = |
| preservedunits = |
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| restoredate = |
| restoredate = |
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| scrapdate = |
| scrapdate = |
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| currentowner = |
| currentowner = |
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| disposition = |
| disposition = |
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| notes = |
| notes = |
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}}{{Infobox locomotive |
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| name = Type XF Tender |
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| builddate = 1901-1912<ref name="diagram-book"/> |
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| bogies = {{convert|4|ft|7|in|m|3|abbr=on}} wheelbase, 2 axle |
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| wheeldiameter = {{convert|34|in|mm|abbr=on|sigfig=3}} |
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| wheelbase = {{convert|14|ft|7|in|m|3|abbr=on}} |
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| length = {{convert|22|ft|2.5|in|m|3|abbr=on}} |
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| width = |
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| height = |
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| axleload = {{convert|10.08|LT|t|3|abbr=on}} each |
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| tenderweight = {{convert|44032|lb|t|abbr=on}} empty<br>{{convert|43.05|LT|t|abbr=on}} w/o |
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| tendertype = |
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| fuelcap = {{convert|10|LT|t|abbr=on}} |
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| watercap = {{convert|3000|impgal|l|abbr=on}} |
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}} |
}} |
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The '''South African Railways Class 6H {{nowrap|4-6-0}}''' of 1901 was a steam locomotive from the pre-[[Union of South Africa|Union]] era in the [[Cape Colony|Cape of Good Hope]]. |
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In 1901 twenty-one Class 6 [[4-6-0]] [[steam locomotive]]s were placed in service by the [[Cape Government Railways]], built to the older Class 6 designs with plate frames. In 1912, when they were assimilated into the South African Railways, later renamed Spoornet and then [[Transnet Freight Rail]], they were renumbered and reclassified to '''Class 6H'''.<ref name="Holland 1"/><ref name="Paxton-Bourne"/> |
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In 1901, 21 6th Class [[4-6-0]] [[steam locomotive]]s were placed in service by the [[Cape Government Railways]], built to the older 6th Class designs with plate frames. In 1912, when they were assimilated into the South African Railways, they were renumbered and designated {{nowrap|Class 6H}}.<ref name="Holland 1">{{Holland-Vol 1|pages=48-49, 56}}</ref><ref name="SAR Renumber">Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer's Office, Pretoria, January 1912, pp. 8, 12, 14, 32-33 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)</ref><ref name="Paxton-Bourne">{{Paxton-Bourne|pages=41-43}}</ref> |
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==Manufacturer== |
==Manufacturer== |
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The Class 6 was designed at the Salt River works of the Cape Government Railways (CGR) at the same time as the [[South African Class 7 4-8-0|Class |
The original [[South African Class 6 4-6-0|Cape 6th Class]] locomotive was designed at the Salt River works of the Cape Government Railways (CGR), at the same time as the [[South African Class 7 4-8-0|7th Class]].<ref name="Holland 1"/> |
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[[File:H.M. Beatty.jpg|thumb|left|150px|H.M. Beatty]] |
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These twenty-one Class 6 locomotives that were placed in service by the CGR in 1901 were built by [[Neilson and Company#Turn of the century|Neilson, Reid and Company]]. With these locomotives, CGR Chief Locomotive Superintendent H.M. Beatty kept to the older plate frame design, but fitted the larger type of cab. These locomotives also reverted to the {{convert|17|in|mm|abbr=off|sigfig=3}} diameter cylinders that were used on all previous Class 6 locomotives with the exception of the [[South African Class 6G 4-6-0|Class 6G]]. Another similarity to the early Class 6 locomotives was the visually obvious distinguishing feature of lower running boards with driving wheel fairings.<ref name="Holland 1"/><ref name="diagram-book"/> |
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Three new versions of the 6th Class locomotive entered service on the CGR in 1901, two American-built and one British-built. The British version was built by [[Neilson and Company#Turn of the 20th century|Neilson, Reid and Company]], who delivered 21 engines. With these locomotives, CGR Chief Locomotive Superintendent H.M. Beatty kept to the older plate frame design, but fitted the larger type of cab. These locomotives were also equipped with the {{convert|17|in|mm|0|abbr=off}} diameter cylinders which had been used on all previous 6th Class locomotives with the exception of the [[South African Class 6G 4-6-0|Class 6G]]. Another similarity to the early 6th Class locomotives was their lower running boards with fairings or splashers over the coupled wheels.<ref name="Holland 1"/><ref name="Diagram-book 1">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.</ref><ref name="Diagram-book 2">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. 6-7, 41, 43.</ref> |
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Upon delivery, nine of them were numbered in the range from 278 to 286 and allocated to the Western System of the CGR. The other twelve were numbered in the range from 601 to 612 for the Midland System, but later renumbered in the range from 541 to 552.<ref name="Holland 1"/> |
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==Drummond tubes== |
==Drummond tubes== |
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One of these |
One of these locomotives, the Western System's no. 286, was an experimental locomotive, equipped with [[Dugald Drummond|Drummond]] water tubes in the firebox and a very large panelled cab. Drummond tubes involved the installation of cross-water tubes in the firebox, as featured on the [[London and South Western Railway]]'s [[LSWR T9 class|T9 Class]] and [[LSWR L11 class|L11 Class]], in an attempt to increase the heating surface area of the water, albeit at the cost of increased boiler complexity. On CGR no. 286, as built, visible exterior evidence of the presence of Drummond tubes was rectangular covers attached to the sides of the firebox just ahead of the cab.<ref name="Holland 1"/> |
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In service, it was found that the tubes did not affect the steaming capacity of the boiler to any significant extent. Instead, the tubes were inclined to leak and were difficult to maintain. It was therefore not long before the tubes were removed |
In service, it was found that the tubes did not affect the steaming capacity of the boiler to any significant extent. Instead, the tubes were inclined to leak and were difficult to maintain. It was therefore not long before the tubes were removed. At the same time, the cab was changed to the standard type, as used on the other twenty locomotives.<ref name="Holland 1"/> |
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==Class 6 sub-classes== |
==Class 6 sub-classes== |
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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> |
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When these locomotives were assimilated into the newly established South African Railways (SAR) in 1912, they were renumbered 614 to 634 and reclassified to '''Class 6H'''. The rest of the CGR’s Class 6 locomotives, together with Class 6 locomotives that were inherited from the ''Oranje-Vrijstaat Gouwermentspoorwegen'' (OVGS) via the Imperial Military Railways (IMR) and the Central South African Railways (CSAR), as well as the CSAR’s own Classes 6-L1 to 6-L3, were grouped into thirteen more sub-classes by the SAR, the 4-6-0 locomotives becoming SAR Classes 6, 6A to 6G and 6J to 6L, the 2-6-2 locomotives becoming Class 6Y and the 2-6-4 locomotives becoming Class 6Z.<ref name="diagram-book">South African Railways and Harbours Locomotive Diagram Book, 2’0” & 3’6” Gauge Steam Locomotives, 15 August 1941, as amended</ref><ref name="Holland 2"/> |
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[[File:Class 6H no. 622 ID.jpg|thumb|left|x100px]] |
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When these locomotives were assimilated into the South African Railways (SAR) in 1912, they were renumbered in the range from 614 to 634 and designated {{nowrap|Class 6H}}.<ref name="SAR Renumber"/><ref name="Diagram-book 1"/><ref name="Diagram-book 2"/><ref name="Holland 2">{{Holland-Vol 2|page=138}}</ref> |
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The rest of the CGR's 6th Class locomotives, together with the Central South African Railways (CSAR) Classes 6-L1 to 6-L3 locomotives which had been inherited from the ''Oranje-Vrijstaat Gouwerment-Spoorwegen'' (OVGS) via the Imperial Military Railways (IMR), were grouped into thirteen more sub-classes by the SAR. The {{nowrap|4-6-0}} locomotives became SAR Classes 6, 6A to 6G and 6J to 6L, the {{nowrap|2-6-2}} locomotives became Class 6Y and the {{nowrap|2-6-4}} locomotives became {{nowrap|Class 6Z}}.<ref name="SAR Renumber"/><ref name="Diagram-book 1"/><ref name="Diagram-book 2"/><ref name="Holland 2"/> |
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==Service== |
==Service== |
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The Class 6 |
The Class 6 family of locomotives were introduced primarily as passenger locomotives, but when the class became displaced by larger and more powerful locomotive classes, it literally became a Jack-of-all-trades. It went on to see service in all parts of the country, except in Natal, and was used on all types of traffic.<ref name="Holland 1"/> |
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After the [[Simon's Town]] line in [[Cape Town]] was electrified in 1928, Class 6H engines that used to haul commuters on this line became dock shunting engines in Table Bay Harbour. This continued until they were gradually replaced by new [[South African Class S2 0-8-0|Class S2 0-8-0]] shunting engines from 1952.<ref name="Soul of a Railway 1-16">[https://sites.google.com/site/soulorailway/home/system-1/part-16---table-bay-harbour Soul of A Railway, System 1, Part 16: Table Bay Harbour © Les Pivnic. Caption 109, 117, 119.] (Accessed on 30 June 2017)</ref> |
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In Cape Town they held a monopoly over the suburban services until electrification arrived in 1928, and on the Reef they also worked these services between Randfontein and Springs until the loads became too heavy for them. They were employed on branch lines all over the country, Natal excluded, and practically every big station and many smaller ones had its quota of these locomotives to work the local passenger, goods and shunting services.<ref name="Holland 1"/> |
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==Renumbering== |
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Like the Class 7, the Class 6 family gave good service for many years. By the time the last ones were retired in 1973, the Class 6 series had achieved a service life of eighty years, a performance that can be matched by few, if any, other locomotive classes world wide.<ref name="Holland 1"/> |
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The table lists the Class 6H works numbers and renumbering.<ref name="Holland 1"/><ref name="SAR Renumber"/><ref name="Holland 2"/> |
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==Renumberings== |
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The table shows the Class 6H works numbers and renumberings.<ref name="Holland 1"/><ref name="Holland 2"/> |
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{| class="wikitable collapsible collapsed sortable" style="margin:0.5em auto; font-size:100%;" |
{| class="wikitable collapsible collapsed sortable" style="margin:0.5em auto; font-size:100%;" |
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|+'''Class 6H 4-6-0<br>Works Numbers & Renumbering''' |
|+'''Class 6H 4-6-0<br>Works Numbers & Renumbering''' |
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|- |
|- |
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! |
! <br>Works no. |
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! CGR<br>no |
! CGR<br>no. |
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! CGR<br>Renumber |
! CGR<br>Renumber |
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! SAR<br>no |
! SAR<br>no. |
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|- |
|- |
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|5883 |
|5883 |
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==Commemoration== |
==Commemoration== |
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A 25c postage stamp which depicted a Class 6H locomotive was one of a set of four commemorative [[postage stamps]] which were issued by the South African Post Office on 27 April 1983 to commemorate the steam locomotives of South Africa, which were rapidly being withdrawn from service at the time. The artwork and stamp design was by the noted stamp designer and artist Hein Botha.<ref name="Philbullet">Philatelic Bulletin 176, issued by Philatelic Services and INTERSAPA, 1983</ref> |
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The particular locomotive depicted |
The particular locomotive depicted was ex CGR (Midland System) 6th Class no. 605, renumbered to CGR no. 545 and later SAR Class 6H no. 627, which was withdrawn from service in 1971 and plinthed at the Mafikeng Museum in 1972. The outline of a traditional SAR locomotive number plate was used on the date of release as a commemorative cancellation for De Aar.<ref name="Philbullet"/><ref>[http://steam-locomotives-south-africa.blogspot.com/2008/07/mafikeng-museum-sar-class-6h-steam.html Old STEAM LOCOMOTIVES in South Africa - Mafikeng Museum: SAR Class 6H Steam Locomotive] (Accessed on 17 November 2016)</ref> |
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== |
==Illustration== |
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The main picture |
The main picture and the following show the differences in appearance of the Class 6H during its service life, with different cabs, headlights and cowcatcher designs. |
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<gallery mode=packed heights="200px"> |
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<center> |
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File:CGR 6th Class no. 286 Drummond.jpg|CGR Western System no. 286, as built, with Drummond tubes and large cab |
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{| |
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File:SAR Class 6H 631 (4-6-0) ex CGR 609-549.jpg|Ex CGR Midland System 6th Class no. 609, renumbered to CGR no. 549 and later SAR Class 6H no. 631, with a large headlight |
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File:SAR Class 6H 631 (4-6-0) CGR 609 CGR 549.jpg|SAR Class 6H no. 631, ex CGR Midland System 6th Class no. 609, later renumbered to CGR no. 549, with a smaller round paraffin headlight and without a cowcatcher |
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</gallery> |
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|} |
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</center> |
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==See also== |
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* [[South African Class 6 4-6-0]] |
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* [[South African Class 6A 4-6-0]] |
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* [[South African Class 6B 4-6-0]] |
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* [[South African Class 6C 4-6-0]] |
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* [[South African Class 6D 4-6-0]] |
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* [[South African Class 6E 4-6-0]] |
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* [[South African Class 6F 4-6-0]] |
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* [[South African Class 6G 4-6-0]] |
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* [[South African Class 6J 4-6-0]] |
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* [[South African Class 6K 4-6-0]] |
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* [[South African Class 6L 4-6-0]] |
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* [[South African Class 6Y 2-6-2]] |
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* [[South African Class 6Z 2-6-4]] |
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* [[South African locomotive numbering and classification#Tender locomotives|Tender locomotive numbering and classification]] |
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* [[Cape Government Railways]] |
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* [[4-6-0#South Africa|The 4-6-0 “Ten-wheeler”]] |
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* [[List of South African locomotive classes]] |
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==References== |
==References== |
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{{Commonscat|South African Class 6H (4-6-0)|South African Class 6H 4-6-0|position=left}} |
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<references/> |
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{{Reflist|30em}} |
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{{Locomotives of the Cape Government Railways}} |
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{{Commonscat-N|South African Class 6H (4-6-0)}} |
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{{Locomotives of South Africa}} |
{{Locomotives of South Africa}} |
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{{ |
{{Steam locomotive tenders}} |
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[[Category:Steam locomotives of South Africa]] |
[[Category:Steam locomotives of South Africa|1390]] |
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[[Category:H.M. Beatty locomotives|1390]] |
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[[Category:4-6-0 locomotives]] |
[[Category:4-6-0 locomotives]] |
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[[Category:2′C n2 locomotives]] |
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[[Category:Neilson Reid locomotives]] |
[[Category:Neilson Reid locomotives]] |
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[[Category:Cape gauge railway locomotives]] |
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[[Category:Railway locomotives introduced in 1901]] |
[[Category:Railway locomotives introduced in 1901]] |
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[[Category:1901 in South Africa]] |
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[[Category:Scrapped locomotives]] |
Revision as of 18:14, 25 April 2023
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The South African Railways Class 6H 4-6-0 of 1901 was a steam locomotive from the pre-Union era in the Cape of Good Hope.
In 1901, 21 6th Class 4-6-0 steam locomotives were placed in service by the Cape Government Railways, built to the older 6th Class designs with plate frames. In 1912, when they were assimilated into the South African Railways, they were renumbered and designated Class 6H.[1][2][3]
Manufacturer
The original Cape 6th Class locomotive was designed at the Salt River works of the Cape Government Railways (CGR), at the same time as the 7th Class.[1]
Three new versions of the 6th Class locomotive entered service on the CGR in 1901, two American-built and one British-built. The British version was built by Neilson, Reid and Company, who delivered 21 engines. With these locomotives, CGR Chief Locomotive Superintendent H.M. Beatty kept to the older plate frame design, but fitted the larger type of cab. These locomotives were also equipped with the 17 inches (432 millimetres) diameter cylinders which had been used on all previous 6th Class locomotives with the exception of the Class 6G. Another similarity to the early 6th Class locomotives was their lower running boards with fairings or splashers over the coupled wheels.[1][4][5]
Upon delivery, nine of them were numbered in the range from 278 to 286 and allocated to the Western System of the CGR. The other twelve were numbered in the range from 601 to 612 for the Midland System, but later renumbered in the range from 541 to 552.[1]
Drummond tubes
One of these locomotives, the Western System's no. 286, was an experimental locomotive, equipped with Drummond water tubes in the firebox and a very large panelled cab. Drummond tubes involved the installation of cross-water tubes in the firebox, as featured on the London and South Western Railway's T9 Class and L11 Class, in an attempt to increase the heating surface area of the water, albeit at the cost of increased boiler complexity. On CGR no. 286, as built, visible exterior evidence of the presence of Drummond tubes was rectangular covers attached to the sides of the firebox just ahead of the cab.[1]
In service, it was found that the tubes did not affect the steaming capacity of the boiler to any significant extent. Instead, the tubes were inclined to leak and were difficult to maintain. It was therefore not long before the tubes were removed. At the same time, the cab was changed to the standard type, as used on the other twenty locomotives.[1]
Class 6 sub-classes
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.[2][6]
When these locomotives were assimilated into the South African Railways (SAR) in 1912, they were renumbered in the range from 614 to 634 and designated Class 6H.[2][4][5][7]
The rest of the CGR's 6th Class locomotives, together with the Central South African Railways (CSAR) Classes 6-L1 to 6-L3 locomotives which had been inherited from the Oranje-Vrijstaat Gouwerment-Spoorwegen (OVGS) via the Imperial Military Railways (IMR), were grouped into thirteen more sub-classes by the SAR. The 4-6-0 locomotives became SAR Classes 6, 6A to 6G and 6J to 6L, the 2-6-2 locomotives became Class 6Y and the 2-6-4 locomotives became Class 6Z.[2][4][5][7]
Service
The Class 6 family of locomotives were introduced primarily as passenger locomotives, but when the class became displaced by larger and more powerful locomotive classes, it literally became a Jack-of-all-trades. It went on to see service in all parts of the country, except in Natal, and was used on all types of traffic.[1]
After the Simon's Town line in Cape Town was electrified in 1928, Class 6H engines that used to haul commuters on this line became dock shunting engines in Table Bay Harbour. This continued until they were gradually replaced by new Class S2 0-8-0 shunting engines from 1952.[8]
Renumbering
The table lists the Class 6H works numbers and renumbering.[1][2][7]
Works no. |
CGR no. |
CGR Renumber |
SAR no. |
---|---|---|---|
5883 | 278 | 614 | |
5884 | 279 | 615 | |
5885 | 280 | 616 | |
5886 | 281 | 617 | |
5887 | 282 | 618 | |
5888 | 283 | 619 | |
5889 | 284 | 620 | |
5891 | 285 | 621 | |
5890 | 286 | 622 | |
5871 | 601 | 541 | 623 |
5872 | 602 | 542 | 624 |
5873 | 603 | 543 | 625 |
5874 | 604 | 544 | 626 |
5875 | 605 | 545 | 627 |
5876 | 606 | 546 | 628 |
5877 | 607 | 547 | 629 |
5878 | 608 | 548 | 630 |
5879 | 609 | 549 | 631 |
5880 | 610 | 550 | 632 |
5881 | 611 | 551 | 633 |
5882 | 612 | 552 | 634 |
Commemoration
A 25c postage stamp which depicted a Class 6H locomotive was one of a set of four commemorative postage stamps which were issued by the South African Post Office on 27 April 1983 to commemorate the steam locomotives of South Africa, which were rapidly being withdrawn from service at the time. The artwork and stamp design was by the noted stamp designer and artist Hein Botha.[9]
The particular locomotive depicted was ex CGR (Midland System) 6th Class no. 605, renumbered to CGR no. 545 and later SAR Class 6H no. 627, which was withdrawn from service in 1971 and plinthed at the Mafikeng Museum in 1972. The outline of a traditional SAR locomotive number plate was used on the date of release as a commemorative cancellation for De Aar.[9][10]
Illustration
The main picture and the following show the differences in appearance of the Class 6H during its service life, with different cabs, headlights and cowcatcher designs.
-
CGR Western System no. 286, as built, with Drummond tubes and large cab
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Ex CGR Midland System 6th Class no. 609, renumbered to CGR no. 549 and later SAR Class 6H no. 631, with a large headlight
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SAR Class 6H no. 631, ex CGR Midland System 6th Class no. 609, later renumbered to CGR no. 549, with a smaller round paraffin headlight and without a cowcatcher
References
- ^ a b c d e f g h Holland, D.F. (1971). Steam Locomotives of the South African Railways. Vol. 1: 1859–1910 (1st ed.). Newton Abbott, England: David & Charles. pp. 48–49, 56. ISBN 978-0-7153-5382-0.
- ^ a b c d e Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer's Office, Pretoria, January 1912, pp. 8, 12, 14, 32-33 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)
- ^ Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 41–43. ISBN 0869772112.
- ^ a b c 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.
- ^ a b c 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. 6-7, 41, 43.
- ^ The South African Railways - Historical Survey. Editor George Hart, Publisher Bill Hart, Sponsored by Dorbyl Ltd., Published c. 1978, p. 25.
- ^ a b c Holland, D. F. (1972). Steam Locomotives of the South African Railways. Vol. 2: 1910-1955 (1st ed.). Newton Abbott, England: David & Charles. p. 138. ISBN 978-0-7153-5427-8.
- ^ Soul of A Railway, System 1, Part 16: Table Bay Harbour © Les Pivnic. Caption 109, 117, 119. (Accessed on 30 June 2017)
- ^ a b Philatelic Bulletin 176, issued by Philatelic Services and INTERSAPA, 1983
- ^ Old STEAM LOCOMOTIVES in South Africa - Mafikeng Museum: SAR Class 6H Steam Locomotive (Accessed on 17 November 2016)