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).
Confirming an alteration to drawing EB.2560 for the 3.500 Bore Bentley Head.
| Identifier | ExFiles\Box 86\1\ scan0182 | |
| Date | 23th December 1935 | |
| X219 To By.{R.W. Bailey - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Smth.1/KW.23.12.35. 3.500 Bore Bentley Head. Confirming our memo. Hs{Lord Ernest Hives - Chair}/Smth.24/KW.14.11.35, the drawing EB.2560 should be altered to have a combustion chamber depth of 1.150, not 1.025. This is to give a compression ratio of 6.4/1. We assume that you will make the combustion chamber the same shape as in Ex.18392. Hs{Lord Ernest Hives - Chair}/Smth. | ||