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).
The measurement of over-run torque on a Bentley vehicle.
| Identifier | ExFiles\Box 84\4\ scan0273 | |
| Date | 15th July 1937 | |
| To Hdy.{William Hardy} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}9/AP.15.7.37 BENTLEY OVER-RUN TORQUE We have measured on 3.B.lV. the deceleration in neutral and top gear at 40 m.p.h. by the time to reduce speed from 45 to 35 m.p.h. The difference in time of 8 seconds on a car weighing 4200 lbs. gives an effective propeller shaft braking torque of 70 lbs.ft. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||