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 Trial run of Clayton D class locomotive No 1 at Silverstream | |||||||||||||||||||||||
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The NZR D class of 1929 comprised one 0-4-0 tank locomotive that was built for the New Zealand Railways Department by the Clayton Wagons Ltd in Lincoln, England.
History
Originally, D 1 was purchased for railcar type service but it was not successful. It had a White-Forster type boiler designed for a working pressure of 300 psi (2,068 kPa), had four vertical cylinders housed in the rear of the cab and was high geared. At a normal engine speed of 400 rpm, the unit was calculated to develop 200 horsepower (150 kW). The engine drove a central transverse jackshaft through reduction gearing, the drive from the jackshaft being transmitted to the wheels through conventional side rods.
Working Life
On arrival in New Zealand, D 1 was found to be more than 25 percent heavier than the specified maximum of 20 long tons (20.3 t; 22.4 short tons) and after trials in Wellington was allocated for use as a shunting engine at the Ōtāhuhu workshops. However it never proved satisfactory and was written off in 1936 and scrapped and D 1 did not survive to be preserved.
Notes and references
Notes
References
- Millar, Sean (2011). The NZR Steam Locomotive. Wellington: New Zealand Railway and Locomotive Society. ISBN 978-0-908573-89-9.
- Palmer, A. N.; Stewart, W. W. (1965). Cavalcade of New Zealand Locomotives. Wellington: A H. & A W. Reed. ISBN 978-0-207-94500-7.
- Stewart, W. W. (1974). When Steam was King. Wellington: A. H. & A. W. Reed Ltd. ISBN 978-0-589-00382-1.
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