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).
Figures for new Bentley wheel and tyre sizes and requesting the alteration of speedometers on production.
| Identifier | ExFiles\Box 165\2\ img121 | |
| Date | 12th October 1937 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} c. By/Mr. Davis. Handwritten notes: X, PO1, RC{R. Childs} '6065- BENTLEY SPEEDOMETERS. We give below the figures for the new Bentley wheel and tyre as compared with the present standard Effective Road Wheel Speedometer circumference. revs/mile. revs/mile. Standard 5.50 x 18 90.875" 697 794 New tyre 6.50 x 17 92.75" 683 780 Will you please arrange to have the speedometers altered on production to the new ratio when we standardise and fit the new tyres. Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} | ||