South African Class NG G16 2-6-2+2-6-2
No. NG113 at Sandstone Estates, 9 April 2006
The South African Railways Class NG G16 2-6-2+2-6-2 of 1937 was a narrow gauge steam locomotive.
Between 1937 and 1968, the South African Railways placed 34 Class NG G16 Garratt articulated steam locomotives with a 2-6-2+2-6-2 Double Prairie type wheel arrangement in service on the Avontuur Railway and on the Natal narrow gauge lines.
The success of the Class NG G13 narrow gauge Garratts that were introduced by the South African Railways (SAR) in 1927 led to a decision that any additional narrow gauge articulated locomotives would be of the same design. Altogether 34 more 2-6-2+2-6-2 Double Prairie type narrow gauge locomotives were built, spread over five orders from three manufacturers over a span of 32 years.
In 1937, Société Anonyme John Cockerill of Seraing in Belgium delivered four new 2-6-2+2-6-2 locomotives, numbered in the range from NG85 to NG88, which were so similar to the older locomotives that they were initially designated Class NG G13 as well. However, in view of the fact that all the carrying wheels were fitted with roller bearing axle boxes and arranged as swiveling pony trucks, compared to the Class NG G13 of which the inner carrying wheels were built to the Gölsdorf system which allowed the axle some lateral movement, it was soon decided to reclassify them to Class NG G16.
These pre-war locomotives, like the earlier Class NG G13 locomotives, were built with riveted coal and water bunkers and with large radius curved tops on the water tanks.
The third order was for a further seven locomotives in 1951, numbered in the range from NG125 to NG131, once again from Beyer, Peacock. These and the subsequent locomotives had welded water and coal bunkers and flat-topped water tanks with rounded top side edges.
The fourth batch of seven locomotives, numbered in the range from NG137 to NG143, were the last steam locomotives to be built by Beyer, Peacock and were built to the specifications of the Tsumeb Copper Corporation in South West Africa (SWA). They were mechanically similar to the earlier and subsequent Class NG G16 locomotives, but with a revised coal and water carrying arrangement. These locomotives had an enlarged front water tank capacity, but carried no water in their rear bunkers which consequently had a larger coal capacity. It was planned to use them as tank-and-tender Garratts, semi-permanently attached to a water tender for use across the Namib desert in SWA, as was the practice with the Cape gauge Classes GM, GMA and GO tank-and-tender Garratts in South Africa.
However, while the locomotives were being built the decision was made to convert all the SWA narrow gauge lines to Cape gauge. In terms of a prior agreement between the SAR and the Tsumeb Copper Corporation, the SAR would purchase any narrow gauge locomotives that would become redundant should the re-gauging of the SWA system take place. The new locomotives were therefore delivered directly to the SAR in 1958.
On the Avontuur Railway, these locomotives were used as tank-and-tender Garratts, but when the Langkloof members of the class were transferred to Natal in 1964, the water tenders were dispensed with since watering points were much closer together in Natal as a consequence of the early use of tank engines on those narrow-gauge branches.
The final order for eight locomotives in 1967, numbered in the range from NG149 to NG156, turned out to be the last new steam locomotives to be ordered by the SAR. Beyer-Peacock had stopped building steam locomotives after the last batch of Class NG G16 in 1958 and by 1968 they were in the process of closing the business altogether. Since no other overseas manufacturers were available to supply them, they were built by Hunslet-Taylor in Germiston using boilers supplied by their overseas principals, the Hunslet Engine Company in England. Built in 1967 and 1968, these locomotives had the same enlarged capacity front water tanks as those of the Tsumeb group, but their rear bunkers were identical to those of the 1951 batch of locomotives and carried both coal and water.
The seven Beyer, Peacock locomotives ordered by the Tsumeb Copper Corporation, numbers NG137 to NG143, were initially distributed between the Umzinto, Port Shepstone and Avontuur lines, but in 1964 the three that went to the Langkloof were also transferred to Natal.
When the lower section of the Avontuur line was dieselised upon the arrival of the Class 91-000 diesel-electric locomotives in 1973, all the Class NG G16 locomotives still in service were transferred to various branches in Natal, where they remained until they were withdrawn from service.
Class NG G16A
When the four Natal narrow gauge systems were closed down by the SAR, the Weenen and Mid-Illovo lines were lifted, but the Harding line was privatised as the Alfred County Railway (ACR), operating out of Port Shepstone.
As part of their strategy to keep the railway competitive, two of the ACR's Class NG G16 locomotives were rebuilt using technology similar to that used in the Cape gauge Class 26 Red Devil. The rebuilding incorporated a gas producing combustion system (GPCS), Lempor exhausts, an improved spark arrester, lightweight multi-ring articulated piston valves, improved valve events and improved mechanical lubrication. The two locomotives which received this treatment, no. NG141 in 1989 and no. NG155 in 1990, were reclassified to Class NG G16A.
In comparative testing, no. NG141 achieved a fuel saving of 25% compared to a standard Class NG G16 Garratt, a performance which was easily maintained in regular service. The cost of the work paid off financially within twelve months and led to a proposal to develop a Class NG G17, but that never materialised since the line's farming produce traffic was gradually lost to road transport on the improving road network.
Since withdrawal from SAR service, some locomotives were sold to foreign railways and into private hands and restored to operational condition, while others ended up in various degrees of preservation ranging across the spectrum from running order to staging to total abandonment. By 2012, at least three establishments still operated or were restoring ex-SAR Class NG G16 Garratts.
Welsh Highland Railway
The Welsh Highland Railway in the United Kingdom owns four Class NG G16 locomotives. One, no. NG140, is undergoing restoration to operating condition while three locomotives, Cockerill-built no. NG87 and Beyer, Peacock-built numbers NG138 and NG143, are kept in excellent condition by this establishment which exhibits great pride in its heritage. In addition, two other Class NG G16s, numbers NG109 and NG130, are based on the line but not owned by the railway. No. NG130 is undergoing a fast track restoration sponsored by its private owner with a ten-year operating agreement with the WHR in place from 2017. No. NG109 is stored as a kit of parts.
The Sandstone Estates near Ficksburg in the Free State is home to a large number of Class NG G16 locomotives, either as the owners or as the custodian for locomotives belonging to individuals or other establishments. Three of their Class NG G16 locomotives are kept in pristine condition and are regularly run during the Estate's annual events like the Cosmos Festival, Cherry Festival, Stars of Sandstone and others. These are Cockerill-built no. NG88, Beyer, Peacock-built no. NG113 and Hunslet-Taylor-built no. NG153.
Puffing Billy Railway
The Puffing Billy Railway, located in the Dandenong Ranges east of Melbourne, Australia, began restoring Class NG G16 no. NG129 and regauging it to 2 ft 6 in (762 mm) as a backup for their Victorian Railways G class Garratt no. G42 at a time of increasing passenger loadings. Completion of no. NG129's restoration is planned to coincide with the next time that no. G42 is to be withdrawn for major maintenance. Faced with the need to manufacture a number of missing parts for no. NG129, the Puffing Billy has also purchased no. NG127 and a container of spare parts from a private owner in South Africa. This gives them many of the much needed missing parts and a second almost-complete Class NG G16 which will also be totally rebuilt in the future.
The last known fate of all the Class NG G16 locomotives, as of April 2017, are shown in Table I.
South African Class NG G16 2-6-2+2-6-2 locations
|NG85||Cockerill||South Africa||Sandstone Estates||Unrestored, scrap condition.|
|NG86||Cockerill||South Africa||Sandstone Estates||Unrestored, scrap condition.|
|NG87||Cockerill||Wales||Welsh Highland Railway||Operational WHR.|
|NG88||Cockerill||South Africa||Sandstone Estates||Operational.|
|NG109||Beyer, Peacock||Wales||Welsh Highland Railway||Purchased by Waterman Heritage Railway Trust in scrap condition during 2009 for future use on the WHR. After failure of UK Government to back his apprenticeship program, the fast track overhaul was stopped. All parts were moved to Dinas where they remain in open storage with no current plans to complete the overhaul.|
|NG110||Beyer, Peacock||South Africa||Sandstone Estates||Unrestored, scrap condition.|
|NG111||Beyer, Peacock||South Africa||Gold Reef City, Johannesburg||On display in excellent cosmetic condition.|
|NG112||Beyer, Peacock||South Africa||Century City, Cape Town||On display in good cosmetic condition, on loan from Sandstone Estates.|
|NG113||Beyer, Peacock||South Africa||Sandstone Estates||In good condition but staged for a boiler overhaul April 2017.|
|NG114||Beyer, Peacock||South Africa||Paddock, KwaZulu-Natal||Unrestored, scrap condition, for sale. Ownership transferred from the THF to Paddock Motors Pty. Ltd. by court order for non payment of storage fees on 10 November 2015.|
|NG115||Beyer, Peacock||England||Exmoor Steam Railway||Stored in unrestored, scrap condition.|
|NG116||Beyer, Peacock||South Africa||Paton's Country Railway, Ixopo, KwaZulu-Natal||Operational from April 2017. Overhauled using parts off 156 including the boiler.|
|NG125||Beyer, Peacock||South Africa||Paddock, KwaZulu-Natal||Unrestored, scrap condition, for sale. Ownership transferred from the THF to Paddock Motors Pty. Ltd. by court order for non payment of storage fees on 10 November 2015|
|NG126||Beyer, Peacock||South Africa||Paddock, KwaZulu-Natal||Unrestored, scrap condition, for sale. Ownership transferred from the THF to Paddock Motors Pty. Ltd. by court order for non payment of storage fees on 10 November 2015.|
|NG127||Beyer, Peacock||Australia||Puffing Billy Railway||Unrestored. Sold to the Puffing Billy Railway in 2012.|
|NG128||Beyer, Peacock||South Africa||Sandstone Estates||Unrestored, scrap condition.|
|NG129||Beyer, Peacock||Australia||Puffing Billy Railway||Total rebuild in process, including a new all-welded steel boiler and conversion to 2'6" gauge. Expected to operate by 2019.|
|NG130||Beyer, Peacock||Wales||For Welsh Highland Railway||Purchased from the Exmoor Steam Railway by Steam Powered Services (Peter Best) in scrap condition. Now at the WHR Dinas works where it is being restored to operate on the railway. Expected to operate by 2018.|
|NG131||Beyer, Peacock||South Africa||Avontuur Railway Apple Express||Owned by Transnet Heritage Trust. Stored in the former Humewood Road (Port Elizabeth) Narrow Gauge diesel depot in excellent external condition. Awaiting mechanical and boiler assessment.|
|NG137||Beyer, Peacock||South Africa||Sandstone Estates||Unrestored, scrap condition.|
|NG138||Beyer, Peacock||Wales||Welsh Highland Railway||Operational on the Welsh Highland Railway, undergoing mechanical overhaul beginning October 2016, expected back in use in late 2017.|
|NG139||Beyer, Peacock||South Africa||Paddock, KwaZulu-Natal||Sold to an Australian consortium March 2017. Under restoration at Paddock, expected to stay there to operate a tourist train.|
|NG140||Beyer, Peacock||Wales||Welsh Highland Railway||Under overhaul to operate on the Welsh Highland Railway.|
|NG141||Beyer, Peacock||South Africa||Sandstone Estates||Rebuilt in 1989 to Class NGG16A, Privately owned by the American, Phil Mortimer, in very poor condition with some recent stabilisation having taken place.|
|NG142||Beyer, Peacock||South Africa||Paddock, KwaZulu-Natal||Unrestored, scrap condition, for sale. Carries the modified NG G16A engine units off 155. Ownership transferred from Peter Newton to Paddock Motors Pty. Ltd. by court order for non payment of storage fees on 10 November 2015.|
|NG143||Beyer, Peacock||Wales||Welsh Highland Railway||Operational. The last Garratt built by Beyer, Peacock.|
|NG149||Hunslet-Taylor||South Africa||Paddock, KwaZulu-Natal||Unrestored, scrap condition, for sale. Ownership transferred from Peter Newton to Paddock Motors Pty. Ltd. by court order for non payment of storage fees on 10 November 2015.|
|NG150||Hunslet-Taylor||South Africa||Sandstone Estates||Unrestored, scrap condition.|
|NG151||Hunslet-Taylor||South Africa||Paddock, KwaZulu-Natal||Unrestored, scrap condition. Owned by Peter Newton.|
|NG152||Hunslet-Taylor||South Africa||Sandstone Estates||Unrestored, scrap condition.|
|NG153||Hunslet-Taylor||South Africa||Sandstone Estates||Operational.|
|NG154||Hunslet-Taylor||South Africa||Humewood Station, Port Elizabeth||Dismantled by Transnet Heritage Foundation, scrapped in August 2011.|
|NG155||Hunslet-Taylor||South Africa||Sandstone Estates||Unrestored, scrap condition. NGG16A boiler unit but carries the standard unmodified engine units off 142.|
|NG156||Hunslet-Taylor||South Africa||Paton's Country Railway, Ixopo, KwaZulu-Natal||Scrap condition. Moved from Paddock to Ixopo and dismantled by December 2015. Some parts including the boiler used to make 116 whole.|
The main picture and the following photographs offer views of the various models of the Class NG G16 locomotive.
Cockerill-built no. NG87, Beddgelert on the WHR, 31 August 2009
Beyer, Peacock-built no. NG143, Rhyd Ddu on the WHR, 31 August 2004
|Wikimedia Commons has media related to South African Class NG G16 2-6-2+2-6-2.|
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- Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 10–11, 107, 109–110. ISBN 0869772112.
- Hamilton, Gavin N., The Garratt Locomotive - Garratt Locomotives produced by Beyer, Peacock, retrieved 10 November 2012
- Hamilton, Gavin N., The Garratt Locomotive - Garratt Locomotives from Other Builders, retrieved 10 November 2012
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- "Alfred County Railway 2-6-2+2-6-2 NG G16A Garratts 141 & 155". martynbane.co.uk. Retrieved 2009-07-10.
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- "Puffing Billy Monthly News, February 2012". Bill Russell. Retrieved 2012-01-30.
- Payling, D (2012). Garratts & Kalaharis of the West Highland Railway (1st ed.). Porthmadog, Wales: The Ffestiniog & Welsh Highland Railways. pp. 129–130. ISBN 978 0 901848 10 9.
- Welsh Highland Railway news
- Stars of Sandstone, Official Operating Programme for 12th - 21st April 2014 (stars 2014 - official operating programme-7.pdf)
- Exmoor Steam Railway and its history