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).
Gearbox modifications for a Large Bore Bentley to address overloaded half shafts.
| Identifier | ExFiles\Box 86\4\ scan0116 | |
| Date | 15th May 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} +228 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}18/KW.15.5.35. Gearbox for Large Bore Bentley. In order to do away with the criticism that the half shafts on this car are overloaded, we require a 16% higher 1st gear. Will you please therefore put in hand a box to N. Sch. 4123 (as used for the T.T.) but differing in the following respects - (1) C.M. 3rd and 2nd speed standard gears. (2) 1st speed gears 36/20, D.P. unaltered. (3) Splined on reverse pinion 21 T. 8 D.P. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||