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).
Braking test results showing stopping distances and pedal pressures from 40 mph and 30 mph for different vehicle and tyre configurations.
| Identifier | ExFiles\Box 82\5\ scan0212 | |
| Date | 29th April 1938 | |
| -2- 29.4.38. Stopping from 40 m.p.h. Customer's car. 48 ft. pedal pressure 105 lbs. " " " " 3.B.IV. 6.50 x 16 tyres. 45 ft. pedal pressure 90 lbs. " " " " 3.B.IV. 5.50 x 18 tyres. 51 ft. pedal pressure 100 lbs. Stopping from 30 m.p.h. Customer's car. 26 ft. pedal pressure 90 lbs. " " " " 3.B.IV, 6.50 x 16 tyres. 27 ft. pedal pressure 100 lbs. " " " " 3.B.IV. 5.50 x 18 tyres. 27 ft. pedal pressure 80 lbs. Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} | ||