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).
Page 2 of an engine test report detailing performance data and adjustments made to magneto gap and tappet clearances.
| Identifier | ExFiles\Box 43\3\ Scan084 | |
| Date | 1st December 1926 guessed | |
| contd :- -2- R.P.M. ............................ 2100 Oil pressure ...................... 67 lbs/sq.in. Oil consumption ................... 6 pts/hr. Oil temperature - inlet ........... 59°C " " - outlet .......... 66°C Water temperature - inlet ........... 62°C " " - outlet .......... 75°C It was found after the 10th. hr. run that :- A.{Mr Adams} side magneto make and break gap had increased from .015 to .020" Tappet clearance of one inlet valve had decreased from .020 to .015". Tappet clearance of two inlet valves had increased from .020 to .025". The locking nuts of the last mentioned were slightly slack. Adjustments to the tappets etc. were made and the test is to be continued. Hs{Lord Ernest Hives - Chair}/T.A. Gibson. | ||