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).
Log of vehicle test results and owner complaints regarding engine knocks and thumps.
| Identifier | ExFiles\Box 114\3\ scan0067 | |
| Date | 26th August 1938 guessed | |
| - 2 - B.149.KU. OWNER: J.{Mr Johnson W.M.} OLDING. MILEAGE 11,218 COMPLAINT Knock in engine. FLOW TIME 2.32 TEMP: 40º O.P. 25 lbs. .006 Lift in shaft. Step liners .010 B.1.HM.{Capt. W. Hallam - Head Repairs} OWNER: D.E. PELLY. MILEAGE 26,853 TEST Very bad thump. FLOW TIME 2.0 TEMP: 40º O.P. 22 1/2 lbs. .011 Lift in shaft. Mod. C. (170) B.5.HM.{Capt. W. Hallam - Head Repairs} OWNER: MAJOR E.{Mr Elliott - Chief Engineer} CADBURY. MILEAGE 25,497 TEST COMPLAINT Slight thump. FLOW TIME 3.4 TEMP: 40º O.P. 25 lbs. Let go. B.186.KT. OWNER: WARWICK WRIGHT. MILEAGE 14,040 TEST COMPLAINT Thump. FLOW TIME 3.46 TEMP: 40º O.P. 26 lbs. .007 Lift in shaft. Step liners .012" (Mod. B) (29) | ||