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).
Performance data from a 10,000-mile test on a Bentley, detailing mileage, speeds, and temperatures.
| Identifier | ExFiles\Box 146\3\ scan0292 | |
| Date | 31th December 1936 | |
| B-60-GA. - BENTLEY. Total Mileage (16.045 Kms.)........... 10,028 Miles Average Speed (84 K.P.H.)............ 52.5 MPH. Oil Temperatures Recorded. Maximum reached............ 135°c (Foggy Weather) Minimum.................. 96°c Average.................. 113.4°c Note. On the run from Poitiers/Bordeaux with an Air Temp. of 3°c Oil Temp. reached 117°c On the run from Paris/Tours with an Air Temp. of 4°c, Oil temp. reached 122°c (Water Temp. 80°c). On the run from Nantes/Paris with an Air Temp. of 4°c, the Oil Temp. did not exceed 105°c. (On this occasion there was a heavy rainfall throughout the run). Water Temperatures Recorded. Maximum.................. 85°c Minimum.................. 75°c Average.................. 80.3°c 10,000 Miles Test of Standard White Metal Main Bearings. G Rue Glyde 31/12/36. | ||