The R class were a hood type general purpose diesel-electric locomotive. They were similar to the Queensland Railways 1300 class. All equipment, except traction motors, were interchangeable with the standard gauge K class. The bogies are an English Electric design with low weight transfer characteristics. They feature fully equalised primary spring gear, all traction motors in each bogie mounted with the nose-suspension facing inwards, traction thrust at near axle level and long pivot centres to reduce inter-bogie transfer. Adhesion loss at maximum tractive effort is limited to 4.5 per cent allowing 1,830 long tons (1,860 t; 2,050 short tons) trailing load to be hauled up a 1 in 100 grade.[1]
History
In 1968 the Western Australian Government Railways took delivery of five narrow gauge versions of the K class for use on bauxite traffic, the last three being fitted with 6 tonnes (5.9 long tons; 6.6 short tons) of ballast to improve their tractive effort. All were fitted with dynamic brakes.[2][3][4]
Gunzburg, Adrian (1968). WAGR Locomotives 1940–1968. Perth: Australian Railway Historical Society (Western Australian Division). pp. 35, 48. OCLC 219836193.
Milne, Rod (1998). Westrail's English Electric Experience (The English Electric locomotives of the WAGR). Elizabeth, SA: Railmac Publications. ISBN0958650098.
Railway Transportation, April 1968
Media related to WAGR R class (diesel) at Wikimedia Commons
January 06, 2023
wagr, class, diesel, class, diesel, locomotives, built, english, electric, rocklea, western, australian, government, railways, 1968, they, were, followed, revised, class, western, australian, government, railways, classr1905, manjimup, july, 1986type, originpo. The R Class are diesel locomotives built by English Electric Rocklea for the Western Australian Government Railways in 1968 They were followed by the revised RA class Western Australian Government Railways R classR1905 at Manjimup in July 1986Type and originPower typeDiesel electricBuilderEnglish Electric RockleaSerial numberA 166 A 167 A 171 A 173 A 174Build date1968Total produced5SpecificationsConfiguration AARC C UICCo Co Co Co Gauge1 067 mm 3 ft 6 in BogiesEnglish Electric low weight transferWheel diameter3 ft 1 1 2 in 0 953 m Minimum curve264 ft 80 467 m Wheelbase40 ft 8 in 12 395 m total 11 ft 3 in 3 429 m bogieLength50 ft 15 240 m over headstocksWidth9 ft 4 in 2 845 m Height13 ft 3 962 m Axle loadR1901 R1902 15 long tons 15 t 17 short tons R1903 R1905 16 long tons 16 t 18 short tons Loco weightR1901 R1902 88 long tons 89 t 99 short tons R1903 R1905 95 5 long tons 97 0 t 107 0 short tons Fuel typeDieselFuel capacity1 200 imp gal 5 500 L Coolant cap 200 imp gal 910 L Prime moverEE 12CSVT Mk IIRPM range850rpmEngine typefour stroke four valves per cylinderAspirationturbo intercooledGeneratorEE822 16JTraction motorsEE548Cylinders12 VeeCylinder size10 in 12 in 254 mm 305 mm MU working110V stepless electro pneumatic throttleLoco brakeAir proportional control dynamicTrain brakesDual air and vacuumPerformance figuresMaximum speed60 miles per hour 97 km h Power output1 950 hp 1 450 kW gross 1 795 hp 1 340 kW netTractive effort50 500 lbf 224 6 kN at 10 8 mph 20 km h CareerOperatorsWestern Australian Government RailwaysNumber in class5NumbersR1901 R1905First runFebruary 12th 1968Disposition5 scrapped Contents 1 Description 2 History 3 Class list 4 ReferencesDescription EditThe R class were a hood type general purpose diesel electric locomotive They were similar to the Queensland Railways 1300 class All equipment except traction motors were interchangeable with the standard gauge K class The bogies are an English Electric design with low weight transfer characteristics They feature fully equalised primary spring gear all traction motors in each bogie mounted with the nose suspension facing inwards traction thrust at near axle level and long pivot centres to reduce inter bogie transfer Adhesion loss at maximum tractive effort is limited to 4 5 per cent allowing 1 830 long tons 1 860 t 2 050 short tons trailing load to be hauled up a 1 in 100 grade 1 History EditIn 1968 the Western Australian Government Railways took delivery of five narrow gauge versions of the K class for use on bauxite traffic the last three being fitted with 6 tonnes 5 9 long tons 6 6 short tons of ballast to improve their tractive effort All were fitted with dynamic brakes 2 3 4 Class list EditSerial number Entered service Road number Current last owner StatusA 166 12 February 1968 R1901 Westrail Scrapped Midland Workshops October 1992 A 167 15 March 1968 R1902 Greentrains Scrapped Bellevue 28 May 2016 A 171 2 May 1968 R1903 Westrail Scrapped Midland Workshops October 1992 A 173 14 June 1968 R1904 Westrail Scrapped Midland Workshops October 1992 A 174 26 June 1968 R1905 Westrail Scrapped Midland Workshops October 1992 References Edit Railway Transportation April 1968 Low weight transfer bogie is feature of new WAGR diesels Oberg Leon 1984 Locomotives of Australia 1850s 1980s Frenchs Forest Reed Books p 260 ISBN 0 730100 05 7 Oberg Leon 2010 Locomotives of Australia 1850s 2010s Kenthurst Rosenberg Publishing pp 351 352 ISBN 9781921719011 R Class WA diesel Railpage Gunzburg Adrian 1968 WAGR Locomotives 1940 1968 Perth Australian Railway Historical Society Western Australian Division pp 35 48 OCLC 219836193 Milne Rod 1998 Westrail s English Electric Experience The English Electric locomotives of the WAGR Elizabeth SA Railmac Publications ISBN 0958650098 Railway Transportation April 1968 Media related to WAGR R class diesel at Wikimedia Commons Retrieved from https en wikipedia org w index php title WAGR R class diesel amp oldid 1107691877, wikipedia, wiki, book, books, library,
