Class B. Production ended in August 1904, over a year after Whale had succeeded Webb. Whale began rebuilding the Webb 0-8-0s in August 1904, and the alterations took several forms. The first to appear were converted from Class B, which Whale considered to have an excessive front overhang: the principal change was the addition of a pony truck, making a 2-8-0; they remained as four-cylinder compounds, and between August 1904 and October 1908, 36 locomotives were converted. 26 of these retained their original boilers and were later designated Class E; ten of those converted from May 1906 were provided with larger boilers (of the type used on the Experiment class) and were later designated Class F. Two of those initially converted to Class E were later given the larger boiler, and joined Class F. The next conversions were from Class A, and were rebuilt as simples, retaining the 0-8-0 wheel arrangement: two inside cylinders were fitted in place of the original centre cylinder, and the outside cylinders were removed. Between November 1904 and March 1906, 15 locomotives were converted, using cylinders of diameter; these retained their original boilers and were later designated Class C. Between March 1906 and March 1909, 62 locomotives were converted, these were also given cylinders but were provided with larger (Experiment class) boilers and were later designated Class D. In December 1906 the original Webb 0-8-0, no. 2524 (which had never been a compound) was also given a large boiler and joined Class D. From March 1909 until September 1912, the last 34 conversions from Class A again retained their original boilers, but the new cylinders were of diameter; they were later designated Class C1. From November 1906, rebuilding of Class B as 0-8-0 simples began. The outside high-pressure cylinders were removed, whilst the former low-pressure inside cylinders were retained. Large (Experiment class) boilers were fitted, and these were later designated Class G. Conversions to Class G continued until June 1917, by which time 32 had been rebuilt; a further 60 to this design were built new between January and September 1910. Retirement and death Whale's retirement was announced at the end of 1908, and on 1 March 1909, C.J. Bowen Cooke became Chief Mechanical Engineer. Whale died at Hove, Sussex on 7 March 1910, aged 67. Bowen Cooke named two of his 4-4-0 Queen Mary class locomotives after his predecessors: no. 238 F.W. Webb and