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 further special cylinder heads to address a metallic clicking issue which a previous modification failed to solve.
| Identifier | ExFiles\Box 14\3\ Scan020 | |
| Date | 12th September 1928 | |
| X7050 By c Mr Hancock/Exp.Dept. c Mr Spitt [Struck through] c Mr walker/Pattern Shop [Struck through] from Mx.{John H Maddocks - Chief Proving Officer} RE CYLINDERS WITH THICKER EXHAUST PORT WALLS Referring back to my memo Mx{John H Maddocks - Chief Proving Officer}3/T14.8.28, in which I stated that I should like a further number of the special cylinder heads before making a definite statement that there is no improvement on heads with the modification referred to in By2/G1.4.28, will you please let me know what action you have taken relative to this matter. CWB has been at the Works today and has taken exception to the feature of the metallic clicking which we attempted to overcome by this modification - therefore I should like further cylinder heads to try as soon as possible please. (TASR) [Signature] Mx{John H Maddocks - Chief Proving Officer} | ||