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).
Request for the strengths of torsion and friction springs for a damped spring drive pendulum lever.
| Identifier | ExFiles\Box 65\4\ scan0241 | |
| Date | 10th July 1925 | |
| To Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} X. 8020 DA{Bernard Day - Chassis Design}/HDY{William Hardy}1/M10.7.25. DAMPED SPRING DRIVE FOR PENDULUM LEVER. We understand that you would like more friction in the damped spring drive, and weaker torsion springs. Will you kindly let us know the strengths of the springs you are actually using, both for torsion and for friction, so that we may have some basis for our calculations. DA.{Bernard Day - Chassis Design} | ||