Axle ratios and tyre sizes for 'B.V.' and 'Ripple' models.
| Identifier | ExFiles\Box 98\1\ scan0147 | |
| Date | 6th April 1939 | |
| #02 1022 1015 To By. {R.W. Bailey - Chief Engineer} from Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} c. By {R.W. Bailey - Chief Engineer} /NS. {Norman Scott} c. By {R.W. Bailey - Chief Engineer} /CRL. {C. R. Lisson} c. By {R.W. Bailey - Chief Engineer} /RD. Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} 4/MH. {M. Huckerby} 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} | ||
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).