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).
Modifications to the Phantom III clutch with vacuum assistance.
| Identifier | ExFiles\Box 93\3\ scan0125 | |
| Date | 29th May 1936 | |
| Rm{William Robotham - Chief Engineer} X312 c. E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} Hs.{Lord Ernest Hives - Chair} RHG. Hs{Lord Ernest Hives - Chair}/Em. E/HDY.{William Hardy}1/HP.29.5.36. Phantom III Clutch with Vacuum Assistance. We send herewith N.Sch.4808 which shows modifications to the clutch thrust bearing required to accommodate the extra separation given with the vacuum servo scheme. This drawing also shows an increased size of retaining screw on the operating levers. We have also enlarged the bore of the operating shaft. E/HDY.{William Hardy} | ||