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).
Requesting bore concentricity measurements for 3.5 and 4.25 litre Bentley engines at different temperatures.
| Identifier | ExFiles\Box 82\4\ scan0293 | |
| Date | 5th May 1936 | |
| To RHC.{R. H. Coverley - Production Engineer} X300 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}19/KW.5.5.36. We are very anxious to know whether there is any difference in the concentricity of the bores on the 3½ litre and the 4¼ litre Bentley, when in each case the block, cylinder head and crankcase are bolted together as in service. Would you please get a figure for us cold and heated up to 150°C., if this can be arranged, otherwise 100°C. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||