New South Wales 4-6-0 Locomotives

Class ??? (Locobase 9648)

Data from Locomotive Engineers Monthly Journal, Vol. XXV, No 4 (April, 1891), p. 315 and Thomas Fletcher Birrell, "The Railway System of New South Wales," Transactions of the American Society of Civil Engineers, August 1893, p.343.

Item notes: v.29 (1893). Works numbers ran 11643, 11647, 11649-11650, 11654, 11658, 11664,

11674, 11686, 11712, 11724, 11736.

Birrell discusses this engine class in terms of its boiler's low center of gravity. It was a long -lasting class, the first one heading for the scrapyard in May 1933, the last in September 1946.

Class C36 (Locobase 2412)

Data verified and supplemented from 2 Jan 1961 publicity handout from the NSW reproduced at http://homepages.ihug.com.au/~nickel/36class.htm

Total weight of engine and tender was 359,072 lb. NSW - Everleigh shops (10) and Clyde Engineering (65) produced these engines, which are based on the C35s but have outside piston valves. Many were rebuilt with Belpaire boilers, which produced the performance sketched in the specifications. Except for two that were retired early, all of them also had their copper fireboxes replaced with an all-steel version. Some data from Peter Cokley in Bryan Attewell (http://www.washingtonimaging.co.uk/index.html)'s Steam locomotive simulator (April 2000 edition).

Class NN-1027/C35 (Locobase 2411)

Data from 2 Jan 1961 publicity handout from the NSW reproduced at http://homepages.ihug.com.au/~nickel/35class.htm

Passenger engines with much taller drivers than heretofore seen on the NSW. Like many NSW engines of the time, the design had a Belpaire firebox and inside valves. Total weight of engine and tender was 286,720 lb.

Class P-6/C32 (Locobase 2410)

Data from the Powerhouse collection's entry http://www.powerhousemuseum.com/collection/database/?irn=87855 (accessed 6 September 2006)

106 of these express passenger and fast-freight engines were built by Beyer, Peacock & Co. Clyde Engineering added 45, Baldwin 20, and NSW's Everleigh shops 20. Baldwin's 20 had slightly different specifications; see Locobase 10978.

According to Powerhouse, the first 50 locomotives (BP builder's numbers 3400-3449) arrived in 1892-1893 and were nicknamed the "Manchester Engines". The NSW was satisfied enought to order 20 more (BP 4211-4230) in 1901

Powerhouse's detailed look at this class includes the following summary of reasons for their longevity: "Some of the reasons ...may lie in the fact that the 32 class were popular with train crews, being good steamers and capable of a "good turn of speed". Furthermore, mechanical staff found them simple and easy to maintain and repair while administrators considered them economical to run and failures were infrequent. They were so versatile that the 32 class could work anything from express trains to mixed traffic and even shunting."

Delivered with long, straight boiler barrels, Belpaire fireboxes and inside slide valves with Allan motion, many were later refitted with superheaters and piston valves; see Locobase 7831.

NB: Tube length is an estimate based on the calculation of tube surface area by subtracting reported firebox heating surface from reported total evaporative heating surface

Class P-6/C32 - Baldwin (Locobase 10978)

Data from Record of Recent Construction #54 (Baldwin Locomotive Works, 1905), p. 4-5 . Works numbers were 25750-25769 in May 1905.

See Locobase 2410 for the main C32 entry. This was the only batch to come from North America. The illustrations show how readily Baldwin would accommodate itself to other countries' requirements to gain export orders. Compared to the Anglo-Australian C32s, this batch had somewhat less boiler heating surface and a slightly smaller grate.

All but 2 (3278, scrapped in February 1957 and 3287, scrapped in May 1959) operated into the 1960s. 3289 was the only one to usher in the 1970s and it was scrapped in September of that year.

Class P-6/C32 - superheated (Locobase 7831)

In Locobase 2410, the P-6 as delivered is described. Data for the superheated engines shown in this entry comes from 2 Jan 1961 publicity handout from the NSW reproduced at http://homepages.ihug.com.au/~nickel/3265.htm and reflects the update. See also Powerhouse collection's detailed entry at http://www.powerhousemuseum.com/collection/database/?irn=87855 (accessed 6 September 2006)

Remarkably, every one of the 191 engines delivered was still in service as of 1954, when replacement by diesel engines began

Specifications by Steve Llanso
Class???C36NN-1027/C35P-6/C32P-6/C32 - BaldwinP-6/C32 - superheated
Locobase ID9648 2412 2411 2410 10978 7831
RailroadNew South WalesNew South WalesNew South WalesNew South WalesNew South WalesNew South Wales
Whyte4-6-04-6-04-6-04-6-04-6-04-6-0
Road Numbers446-457 / 2301-23123601-36753501-35353201-3391105, 130, 679-696 / 3276-32953201-3391
GaugeStdStdStdStdStdStd
BuilderBurnham, Williams & CoseveralNSW - Everleigh shopsseveralBurnham, Williams & Coseveral
Year189119251914189219051933
Valve GearAllanWalschaertStephensonAllanAllanAllan
Locomotive Length and Weight
Driver Wheelbase12.50'14'14'13.88'13.83'13.88'
Engine Wheelbase20.33'26.29'26.29'25.75'25.75'25.75'
Ratio of driving wheelbase to overall engine wheebase 0.61 0.53 0.53 0.54 0.54 0.54
Overall Wheelbase (engine & tender)51.67'59.09'53.83'48.92'51.23'51.67'
Axle Loading (Maximum Weight per Axle)32816 lbs
Weight on Drivers97500 lbs139104 lbs138275 lbs93772 lbs81100 lbs104810 lbs
Engine Weight130000 lbs193200 lbs182448 lbs131060 lbs127600 lbs146922 lbs
Tender Light Weight7200 lbs165088 lbs104294 lbs92960 lbs89400 lbs99546 lbs
Total Engine and Tender Weight137200 lbs358288 lbs286742 lbs224020 lbs217000 lbs246468 lbs
Tender Water Capacity3600 gals7500 gals4800 gals4339 gals4380 gals4380 gals
Tender Fuel Capacity (oil/coal)5.5 tons15.4 tons10.5 tons6.7 tons7.5 tons10.5 tons
Minimum weight per yard of rail on which locomotive could run54 lb rail77 lb rail77 lb rail52 lb rail45 lb rail58 lb rail
Geometry Relating to Tractive Effort
Driver Diameter61"69"69"60"60"60"
Boiler Pressure160 psi204.50 psi184.20 psi162.40 psi160 psi162.40 psi
Cylinders (dia x stroke)21" x 24"23" x 26"22.5" x 26"20" x 26"20" x 26"21" x 26"
Tractive Effort23597 lbs34649 lbs29867 lbs23927 lbs23573 lbs26379 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.13 4.01 4.63 3.92 3.44 3.97
Heating Ability
Firebox Area105.60 sq. ft190 sq. ft195 sq. ft130 sq. ft130 sq. ft130 sq. ft
Grate Area27.70 sq. ft30.80 sq. ft30.50 sq. ft28 sq. ft27 sq. ft27 sq. ft
Evaporative Heating Surface1928 sq. ft1990 sq. ft2235 sq. ft1916 sq. ft1824 sq. ft1485 sq. ft
Superheating Surface650 sq. ft547 sq. ft429 sq. ft
Combined Heating Surface1928 sq. ft2640 sq. ft2782 sq. ft1916 sq. ft1824 sq. ft1914 sq. ft
Evaporative Heating Surface/Cylinder Volume200.39159.17186.79202.67192.94142.47
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation443262995618454743204385
Same as above plus superheater percentage443278736742454743205349
Same as above but substitute firebox area for grate area168964856943103211122080025757
Power L141521653414399440841879342
Power MT281.65786.13688.72310.90341.46589.51

Credits

Introduction and specifications provided by Steve Llanso of Sweat House Media.