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).
Confirming satisfactory tests of Bensport gear ratios and instructing for production.
| Identifier | ExFiles\Box 86\4\ scan0051 | |
| Date | 3rd May 1933 | |
| X228 To By.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} c. to Hdy.{William Hardy} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}16/KT.3.5.33. BENSPORT GEAR RATIOS. We have now tried two cars with the high indirect gear ratios to N.Sch.3658, but using a 49/37 helical 2nd. speed in accordance with BY/TWD.{T. W. D???Aeith}3/E.15.2.33., and are satisfied with these ratios. Will you please instruct them for production. With a 10/41 axle the road speeds at 3000 and 4500 r.p.m. will be 62, 50, 36, 23; and 93, 75, 55, 34, on top, 3rd, 2nd, and 1st gears respectively. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||