From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Error in manufacturing experimental brake drums, which were machined instead of cast, rendering them useless.
| Identifier | ExFiles\Box 120\1\ scan0279 | |
| Date | 21th July 1939 | |
| 1028 To Sft{Mr Swift}/EW. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}18/JH.21.7.39. Brake Drums. We especially instructed 4 brake drums to EXS.1755 the whole object of the experiment being that the ribs on the drum were to be cast in. Having received these drums with the ribs machined we have gone into the matter and find the error is entirely due to the pattern shop not working to the drawing, and making the pattern with both ribs solid. This makes the drums we have received valueless and we shall have to obtain another set added to which the error will cause serious delay. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} | ||