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New South Wales D55 class locomotive : ウィキペディア英語版 | New South Wales D55 class locomotive
The D55 class was a class of 2-8-0 steam locomotives built by Clyde Engineering for the New South Wales Government Railways in Australia. ==Construction==
In 1916 Clyde Engineering were award a contract for the construction of 300 K class locomotives. Following experiments with Southern type valve gear on an earlier class, Chief Mechanical Engineer Edward Lucy proposed its installation on these locomotives. The use of Southern valve gear was rare on locomotives operating outside the United States of America. The Southern valve gear did not give as good steam distribution as was desirable, making the locomotives a little sluggish when hauling heavy loads, compared to the similar classes. The first of the class entered traffic on 29 November 1918. Due to financial difficulties at Clyde Engineering, the next member did not appear for a further two years. Meanwhile, the contract had been reduced to just 120 locomotives. All were in service by March 1925 and were fitted with Wampu tenders. The last 30 were fitted with self-cleaning smokeboxes and outside bearings on the lead pony trucks.〔
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