Locomotive, Steam 3642 | NSW Environment & Heritage

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Locomotive, Steam 3642

Item details

Name of item: Locomotive, Steam 3642
Type of item: Movable / Collection
Group/Collection: Transport - Rail
Category: Railway Locomotives & Rolling Stock
Primary address: Thirlmere Railway Precinct, Thirlmere, NSW 2572
Local govt. area: Wollondilly
All addresses
Street AddressSuburb/townLGAParishCountyType
Thirlmere Railway PrecinctThirlmereWollondilly  Primary Address

Owner/s

Organisation NameOwner CategoryDate Ownership Updated
RailCorpState Government 
RailCorpState Government 

Statement of significance:

Steam Locomotive 3642 has heritage significance as it demonstrates the final design of the 4-6-0 mainline passenger steam locomotive and is associated with the acceleration of mainline passenger services in the pre-WW2 period. The locomotive demonstrates the first application of Walschaerts valve gear on a mainline passenger locomotive in NSW, and the first application of a turret design of tender. It also demonstrates the techniques of locomotive rebuilding that were carried out during the 1950s. It has the potential to reveal information regarding the performance testing that was carried out to support steam locomotive technical development in the NSWGR, with this locomotive in particular being fitted with 12'' trick-ported valves as part of this program. It also has the potential to reveal information regarding a number of new technical developments, including the application of Walschaerts valve gear and the use of a turret tender design. The locomotive has had a very lengthy mainline touring career in preservation. As a result, it may provide useful information on the nature and extent of wear and degradation associated with the infrequent but hard use normal in this service. Steam Locomotive 3642 is representative of a mainline passenger engine of the 1920s to 1960s period immediately prior to dieselisation, representing the class in its final form.
Date significance updated: 13 Nov 09
Note: The State Heritage Inventory provides information about heritage items listed by local and State government agencies. The State Heritage Inventory is continually being updated by local and State agencies as new information becomes available. Read the OEH copyright and disclaimer.

Description

Designer/Maker: NSWGR (E.E.Lucy, Chief Mechanical Engineer; Harold Young, Chief Design Engineer)
Builder/Maker: Clyde Engineering, Granville, NSW
Physical description: EXTERNAL
Locomotive 3642, is a two-cylinder, simple, non-condensing, coal-fired superheated, 4-6-0 express passenger steam locomotive. The locomotive is built around a fabricated inside frame, supporting a boiler of riveted construction, and fitted with a Belpaire firebox. The boiler is fitted with a superheater operated by a smokebox regulator at a pressure of 200 psi. It is fitted with spoked driving wheels with counter weights. The leading bogie wheels are of a disc pattern relieved with four holes. The locomotive is fitted with Walschaert’s outside valve motion, all rods being of a fluted design, with conventional bearings. The boiler has been clad in conventional metal sheeting, with an enclosed cab with an arched window in each side. The locomotive is painted gloss green overall with red and yellow lining.

The tender fitted is of the turret type with a raised bunker. The tender rides on two four-wheel bogies, is of riveted construction and is finished in lined green.
Physical condition and/or
Archaeological potential:
Operational Status: Operational
General Condition: Good Condition
External Condition: Good Condition
Internal Condition: Good Condition

EXTERNAL CONDITION
Locomotive 3642 is fully operational, and is in good overall condition. Paint is in good condition.

INTERNAL CONDITION
Both the locomotive and tender are in good condition following a major restoration in 2007 which included a boiler replacement.
Date condition updated:23 Oct 09
Modifications and dates: 1926 - Built by Clyde Engineering, Granville and entered service.
1955 - Received new boiler with Belpaire firebox with smokebox regulator and other improvements, in addition to new enclosed cab.
1950s - Larger 12'' trick-ported valves fitted (with new cylinder castings) to further improve performance.
1967 - Power reverse mechanism fitted.
September 1969 - Withdrawn from service.
1982 - Heavy overhaul at Goulburn Workshops, with a boiler swap utilising a spare boiler from Chullora Workshops.
1990s - Boiler problems led to withdrawal in the late 1990s.
2007 - Restoration, including the swap of old boiler 3646B for one of the spare 36-class boilers at Thirlmere.
1 March 2008 - Re-launched to traffic.
Current use: NSW Government Railways Collection
Former use: Steam Locomotive

History

Historical notes: Built by Clyde Engineering, Granville as works number 376, Locomotive 3642 of the C36 class was introduced into service in 1926. One of 65 engines built by Clyde Engineering, 3642 was placed, along with the other 74 engines that made up the class, on mainline passenger service displacing the older C32 and C35 classes. They were designed for long distance non-stop running and were the first mainline engine to be fitted with Walschaerts valve gear, this becoming a standard feature for all subsequent classes. The introduction of the C36 class provided the means to shorten journey times, improvements being most pronounced on the Newcastle services and on the Western line. The class was substantially rebuilt in the 1950s. This rebuilding had dramatic results with a changed appearance and profile due to a new Belpaire firebox fitted boiler, enclosed cab, and also some technical developments such as a smokebox regulator. The boiler pressure was increased to 200 lb psi. After being displaced on mainline passenger services by the newer C38 class and on secondary services by diesels, the C36 class saw increasing service in fast goods traffic, displacing the slower standard goods classes, until withdrawal in the late 1960s.

Locomotive 3642 was withdrawn from Broadmeadow in September 1969. The locomotive was placed with the New South Wales Transport Museum who maintained it in mainline running condition. Following a heavy overhaul in Goulburn in 1982, 3642 remained in a trafficable locomotive until boiler problems led to withdrawal in the late 1990s. Funding for an overhaul was announced in 2006 and restoration began during 2007, including the swap of old boiler 3646B for one of the spare 36-class boilers at Thirlmere. Locomotive 3642 was re-launched to traffic on 1 March 2008.

Historic themes

Australian theme (abbrev)New South Wales themeLocal theme
3. Economy-Developing local, regional and national economies Technology-Activities and processes associated with the knowledge or use of mechanical arts and applied sciences Shaping inland settlements-
3. Economy-Developing local, regional and national economies Transport-Activities associated with the moving of people and goods from one place to another, and systems for the provision of such movements Railway work culture-

Assessment of significance

SHR Criteria a)
[Historical significance]
Steam Locomotive 3642 has a high level of historical significance. The locomotive demonstrates the ultimate design of the 4-6-0 mainline passenger steam locomotive and is associated with the acceleration of mainline passenger services in the pre-WW2 period. The C36 class locomotives are associated with fast goods services in the later years, and with the Commonwealth Railways, which adopted the design for the C class.
SHR Criteria b)
[Associative significance]
Based on current knowledge, Steam Locomotive 3642 is not known to have any special associations with people or events of significance in a local or state context. It does not have significance under this criterion.
SHR Criteria c)
[Aesthetic significance]
Steam Locomotive 3642 has a high level of aesthetic significance. The locomotive is an example of the adaptation of essentially British practice resulting in a uniquely ‘Australian’ profile. In rebuilt form, it demonstrates the NSWGR policy of creating a 'family likeness' to their locomotives by use of the now 'standard' style cab pioneered on the 57 class and subsequently fitted to rebuilt 35 and 36 classes, the 38 and 58 classes.

Steam Locomotive 3642 has a high level of technical significance. The locomotive demonstrates the first application of Walschaerts valve gear on a mainline passenger locomotive in NSW, and the first application of a turret design of tender. It also demonstrates the techniques of locomotive rebuilding that were carried out during the 1950s. This class was also used extensively for performance testing to support steam locomotive technical development in the NSWGR, with Locomotive 3642 having technical significance as it was fitted with 12'' trick-ported valves as part of this program.
SHR Criteria d)
[Social significance]
The Steam Locomotive 3642 is likely to have a degree of social value for the community-based associations who have demonstrated an ongoing interest in its conservation and management. This item may also have a degree of social significance to a broader section of the community linked to its historic, aesthetic and associative values.
SHR Criteria e)
[Research potential]
Steam Locomotive 3642 has research significance. The locomotive has the potential to reveal information regarding the performance testing that was carried out to support steam locomotive technical development in the NSWGR, with this locomotive in particular being fitted with 12'' trick-ported valves as part of this program. It also has the potential to reveal information regarding a number of new technical developments, including the application of Walschaerts valve gear and the use of a turret tender design. The locomotive has had a very lengthy mainline touring career in preservation. As a result, it may provide useful information on the nature and extent of wear and degradation associated with the infrequent but hard use normal in this service.
SHR Criteria f)
[Rarity]
Steam Locomotive 3642 is rare because it is one of only three engines of this class in existence, and is the only one to remain operational.
SHR Criteria g)
[Representativeness]
Steam Locomotive 3642 is a good representative example of a 36 class locomotive. It is representative of a mainline passenger engine of the 1920s to 1960s period immediately prior to dieselisation, representing the class in its final form.
Integrity/Intactness: Steam Locomotive 3642 retains a high level of integrity and intactness. The locomotive is currently complete and in operational condition.
Assessment criteria: Items are assessed against the PDF State Heritage Register (SHR) Criteria to determine the level of significance. Refer to the Listings below for the level of statutory protection.

Listings

Heritage ListingListing TitleListing NumberGazette DateGazette NumberGazette Page
Heritage Act - s.170 NSW State agency heritage register     

Study details

TitleYearNumberAuthorInspected byGuidelines used
SRA Heritage Rolling Stock Stage 2b Heritage Assessments2000 David Sheedy Pty Ltd Architects and Heritage ConsultantsSteven Adams Yes
S170 Rolling Stock Review2009 NSW Department of Commerce  Yes

References, internet links & images

TypeAuthorYearTitleInternet Links
WrittenGrunbach, A1989A Compendium of New South Wales Steam Locomotives
WrittenOberg, L1975Locomotives of Australia
WrittenRTM2006Steam Locomotive 3642 CMP

Note: internet links may be to web pages, documents or images.

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Data source

The information for this entry comes from the following source:
Name: State Government
Database number: 4807229


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