BESPOKE CONVERSIONS
Owners and operators of railway locomotives have long indulged in cannibalisation, often in pursuit of a deliberate policy, often out of sheer necessity. In the first instance, take for example the famous British Stanier Class 5 4-6-0, of which over 800 were constructed. A member of this class might go into Works for a major repair, receive a new set of main frames (spares were always on hand at Crewe), reconditioned boiler from stock, and modifications involving the fitting of new parts. From the paint shop would emerge a locomotive bearing the number of that which a month or so previously had arrived in the reception sidings, externally little if at all different, but was it in reality the same one? How much of the admired Gresley Pacific Flying Scotsman…