Driving and damping springs for the revised Goshawk 11 spring drive, referencing drawing No.LeC.1666.
| Identifier | ExFiles\Box 79\3\ scan0146 | |
| Date | 1st January 1923 | |
| X.4222. To BY. {R.W. Bailey - Chief Engineer} from E. {Mr Elliott - Chief Engineer} c. to CJ. c. to Hs. {Lord Ernest Hives - Chair} E2/M6.1.23. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. SPRING DRIVE X.4222. We send herewith drawing No.LeC.1666 shewing driving and damping springs for the revised Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. Spring Drive. We think that the weaker driving spring shewn reproduces the effect of the present standard spring drive, and this one should be tried. The stronger driving spring should be dis-regarded unless it is found necessary to use stronger springs. The damper spring shewn requires recesses adding to a depth of .1 in the fixed portion of the damper hub to accommodate the necessary length of spring for the rating required. E. {Mr Elliott - Chief Engineer} | ||
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).