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).
New, stiffened pressure plate for the Phantom III clutch.
| Identifier | ExFiles\Box 93\3\ scan0077 | |
| Date | 20th January 1936 | |
| X312 E/HDY.{William Hardy}1/HP.20.1.36. Phantom III/Clutch. N.Sch.4738 herewith shews a stiffened pressure plate for this clutch. The thickness is increased by 40% from .625 to .875. The material to be nickel cast iron of the highest strength obtainable. Existing flywheel covers can be altered to suit this plate but new spring cups are required. N.Sch.4738 herewith. E/HDY.{William Hardy} | ||