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).
High-speed test of a Bentley, detailing engine modifications and performance metrics.
| Identifier | ExFiles\Box 89\4\ scan0118 | |
| Date | 5th July 1937 | |
| Levallois, France. Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/5/JAB. 5th July 1937. To. Hs.{Lord Ernest Hives - Chair} c. Rm.{William Robotham - Chief Engineer} c. Sr. 261 Mr. Lang's Bentley. Chassis B-122-GA. Standard size bore R.R. Special Scraper rings. Tight fitting skirt pistons. We have carried out a high speed test, 100 miles, 1 hr. 46 mins. Average speed 56.5 MPH. Oil pressure 30 lbs. Weather conditions, hot. Oil used .1075 gallons - 930 m.p.g. A further test is being taken. ------------ Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||