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).
List of numbered points detailing agreements and disagreements on engineering specifications.
| Identifier | ExFiles\Box 109\3\ scan0083 | |
| Date | 20th March 1941 | |
| -cont'd- - 5 - Jnr.{Charles L. Jenner}1/SW.20.3.41. No.30. RE.1900. Agree to a flat for air release. No.31. RE.1899. The sphere must be retained as we depend on line contact at the seat, we agree to delete the flat bottomed hole. No.32. RE.1886. We can revert to our normal practice by forming the oil way with a milling cutter which cuts both surfaces. No.33. RE.1882. We have tried not having oil to the valve end, but always failed, the complaint has been "squeaking operation". No.34. RE.1676. Agree to one key and pulley altered from M.S. to Mall Iron. No.35. RE.1927. This is my mistake, we can have parallel fitting inlet guides with a C.I. head. No.36. RE.1931. Do not agree, the waisted stem serves as the oil way. No.37. RE.1645. Agree to delete the two waists. No.38. RE.1794. The waisting of the shaft is in order to provide clearance where it revolves in the .5 dia hole in the cylinder head, the shaft-dia. can be increased from .35 to .4 dia. I am surprised that the single piece construction is preferred, the two piece RE.1793, cuts into less stock. Jnr.{Charles L. Jenner} | ||