| 词条 | Tasmanian Government Railways M class (1952) | ||||||||||||||||||||||||||||||||||||||||||||
| 释义 |
|name = Tasmanian Government Railways M class |powertype = Steam |image = TGR M Class.jpg |caption = M5 at the Tasmanian Transport Museum |designer = |builder = Robert Stephenson and Hawthorns |ordernumber = |serialnumber = 7421-7430 |buildmodel = |builddate = 1951 |totalproduction = 10 |rebuilder = Tasmanian Government Railways, Inveresk |rebuilddate = 1957 |numberrebuilt = 4 (MA class) |whytetype = 4-6-2 |gauge = {{RailGauge|1067mm|lk=on}} |leadingdiameter = {{convert|2|ft|2.5|in|m|3|abbr=on}} |driverdiameter = M: {{convert|4|ft|7|in|mm|0|abbr=on}} MA: M: {{convert|4|ft|0|in|mm|0|abbr=on}} |trailingdiameter = {{convert|2|ft|4+1/2|in|m|3|abbr=on}} |minimumcurve = |wheelbase = |length = {{convert|59|ft|2+3/4|in|m|3|abbr=on}} |width = |height = |axleload = {{ubl|Loco: {{convert|10.20|LT|t|1}}|Tender: {{convert|10.60|LT|t|1}}}} |weightondrivers = {{convert|37.25|LT|1}} |locoweight = {{convert|54.20|LT|t|1|abbr=on}} |tenderweight = {{convert|42.40|LT|t|1|abbr=on}} |locotenderweight = |tendertype = |fueltype = Coal |fuelcap = {{convert|6|LT|t|1|abbr=on}} |watercap = {{convert|4000|impgal|L|1|abbr=on}} |tendercap = |sandcap = |boiler = |boilerpressure = {{convert|180|lbf/in2|MPa|2|abbr=on}} |feedwaterheater = |firearea = {{convert|23.1|sqft|m2|3|abbr=on}} |tubearea = {{convert|601|sqft|m2|abbr=on}} |fluearea = {{convert|371|sqft|m2|abbr=on}} |tubesandflues = |fireboxarea = {{convert|371|sqft|m2|abbr=on}} |totalsurface = |superheatertype = 18 element |superheaterarea = {{convert|371|sqft|m2|abbr=on}} |cylindercount = 2 outside |cylindersize = {{convert|16|x|24|in|mm|0|abbr=on}} |frontcylindersize= |rearcylindersize = |hpcylindersize = |lpcylindersize = |valvegear = |valvetype = |valvetravel = |valvelap = |valvelead = |transmission = |maxspeed = |poweroutput = |tractiveeffort = {{convert|27090|lbf|kN|2|abbr=on}} |factorofadhesion = 3.98 |trainheating = |locobrakes = |locobrakeforce = |trainbrakes = |safety = |operator = Tasmanian Government Railways |operatorclass = |powerclass = |numinclass = |fleetnumbers = M1-M10 |officialname = |nicknames = |axleloadclass = |locale = |deliverydate = |firstrundate = |lastrundate = |retiredate = |withdrawndate = |preservedunits = |restoredate = |scrapdate = |currentowner = |disposition = all preserved}} The Tasmanian Government Railways M class was a class of 4-6-2 steam locomotives operated by the Tasmanian Government Railways. HistoryOn 12 March 1952, the Tasmanian Government Railways (TGR) took delivery of 10 M class branch line locomotives from Robert Stephenson and Hawthorns, Newcastle-upon-Tyne. The locomotives were similar to the Indian Railways YB class.[1][2] They were allocated to operate on the North-Eastern and Western lines and at Hobart. However with the TGR having already commenced dieselisation with the X class, some of the lines intended for M class operation had already been converted. Hence in 1957, four were fitted with smaller driving wheels recovered from withdrawn Australian Standard Garratts enabling them to operate heavier trains over the steeply graded North-Eastern line.[1][3][4] As they fell due for overhaul, they were withdrawn from 1960 with the last removed from traffic in 1975.[1] PreservationAll members of the class have been preserved to an extent, with four locomotives seeing further use on heritage trains.
NamesakeThe M class designation was previously used by the M class, the last of which was withdrawn in 1931. References1. ^1 2 {{cite book|last=Oberg|first=Leon|title=Locomotives of Australia 1850s-2010|year=2010|publisher=Rosenberg Publishing|location=Dural|isbn=9781921719011|page=257/258}} 2. ^"Steam Locomotives of the Tasmanian Government Railways and its Constituents" Australian Railway History issue 917 March 2014 page 16 3. ^{{cite book|last=Turner|first=Jim|title=Australian Steam Locomotives 1896-1958|year=1997|publisher=Kangaroo Press|location=Kenthurst|isbn=086417778X|page=159}} 4. ^M & MA Class Rail Tasmania 5. ^MA2 Australian Steam 6. ^MA4 Australian Steam 7. ^M3 Australian Steam 8. ^M4 Australian Steam 9. ^M5 Australian Steam 10. ^MA3 Australian Steam 11. ^The Margate Train About Australia 12. ^M1 Australian Steam 13. ^MA1 Australian Steam 14. ^M6 Australian Steam 15. ^M2 Australian Steam 5 : Railway locomotives introduced in 1952|Robert Stephenson and Hawthorns locomotives|Steam locomotives of Tasmania|3 ft 6 in gauge locomotives of Australia|4-6-2 locomotives |
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