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).
Difficulties with forged N.M.C. liners for Aluminium Composite Brake Drums, requesting an order for centrifugally cast liners.
| Identifier | ExFiles\Box 141\1\ scan0074 | |
| Date | 19th November 1935 | |
| By/Mr. Marriot. ? 118/ HS{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}30/KW.19.11.35. Aluminium Composite Brake Drums. We have heard nothing further from you about the forged N.M.C. liners for the above. We conclude that the manufacturers have experienced real difficulty in making these. You suggested that it would be much easier to cast this material, and so we would be much obliged if you would order for us 5 centrifugally cast N.M.C. liners, the same size as before. We would be very interested to know the thermal conductivity and specific heat of this material, if the manufacturers can supply these figures. Hs{Lord Ernest Hives - Chair}/A.F. Martindale. | ||