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).
Axle ratio decisions for 'B.V.' and 'Ripple' models.
| Identifier | ExFiles\Box 114\1\ scan0192 | |
| Date | 6th April 1939 | |
| 1015, 402 + 1022 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. By/HS.{Lord Ernest Hives - Chair} c. By/CRL.{C. R. Lisson} c. By/RD. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}4/WH.6.4.39. AXLE RATIOS B.V. & "RIPPLE". We have decided on 10/41 ratio for the "Ripple" semi-floating axle. Tyres will be 6 1/2 x 16 on 4 1/2" rims. As regards B.V. for which we have agreed on 10/43, we recommend that cars for sale by Sr. in Paris should have 10/41 gears. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||