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).
Confirmation of a request to modify a large bore Bentley cylinder head drawing to increase the compression ratio.
| Identifier | ExFiles\Box 86\1\ scan0171 | |
| Date | 16th August 1935 | |
| X-219 To By/Cgh.{W Clough} c. to E/MCS. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}4/KW.16.8.35. This is to confirm our asking BY/CS. yesterday to modify the drawing of the large bore Bentley cylinder head in accordance with the marked up blue print Ex.18392, which was handed to him on the test beds. The reason for the modification is to obtain a compression ratio of 6.8 instead of 6.25 as shown on the original Ex. drawing. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||