Construction History
Despite his track record, Drummond decided to return to the 4-6-0 wheel arrangement. This was because such a design had been proven on other railways such as the Great Central, and the additional traction provided by an extra pair of driving wheels was useful in starting heavy trains. The resultant design, class T14, incorporated many features seen previously on his other 4-6-0 designs, the Drummond lipped chimney, large splashers. However, driving wheel diameter was increased by seven inches to 6' 7", and these were powered by four cylinders set in line in an arrangement similar to German practice in the first years of the 20th century. Divided drive was retained with the inside cylinders driving the front axle whilst the outside ones propelled the second axle. Steam distribution was by two sets of Walschaerts valve gear on the outside, the motion of the inside valves being derived through rockers. Six locomotives (447 and 458—62) were fitted with Drummond's smokebox superheater, the other four used saturated steam.
However, despite more consideration over the failings of his previous designs, the class was still plagued by the liabilities of heavy coal and water consumption combined with the serious ongoing ailment of hot axle boxes that afflicted all his previous 4-6-0s.
| Year | Order | Quantity | LSWR numbers | Notes |
|---|---|---|---|---|
| 1911 |
|
|
443–447 | |
| 1912 |
|
|
458–462 |
Read more about this topic: LSWR T14 Class
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