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).
Test log for chassis B56BN detailing temperature readings and observations during a run.
| Identifier | ExFiles\Box 101\1\ scan0262 | |
| Date | 8th May 1936 guessed | |
| strong moisture. Stopping and starting perfect. The following are the Bentley figures. B56BN{W.O. Bentley / Mr Barrington} every mile time 24 min Water Oil Air 76° 86 24 78 86 24 78 88 23 81 90 23 82 90 19 83 90 17 83 95 16 83 95 14 81 95 14 80 95 12 80 95 12 81 92 10 83°c 92°c 10°c average. 80.7°c. 91.4°c 16.8°c The Bentley was preignited towards the end of a run after being switched off. Upon restarting slow running was good, no sign of rich mixture. There was no sign of pre ignition with 229Y. This concluded our days test. We are going to take temperatures etc with top gear work to reduce speed and obtain if possible the efficiency of the radiator. | ||