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).
Comparative weights list for different Phantom Flywheel & Clutch assemblies.
| Identifier | ExFiles\Box 71\2\ scan0160 | |
| Date | 22th September 1926 | |
| X8840 To Hs{Lord Ernest Hives - Chair} from RHC.{R. H. Coverley - Production Engineer} RHC{R. H. Coverley - Production Engineer}7/BE. 22.9.26. We give below comparative weights of the Phantom Flywheel & Clutches. Old Standard Flywheel & Clutch to Arrgt. Drg. G.73474. 144.75 lbs. Lightened Flywheel & Clutch to LeC 2067(which has just been standardised) 120.75 lbs. Diff: 24.00 lbs. Flywheel & Clutch to LeC 2259 which has been further lightened by reducing Flywheel(and which has been fitted to 12.EX) 113.45 lbs. Diff: 7.30 lbs. Total Diff: - 31.30 lbs. RHC.{R. H. Coverley - Production Engineer} | ||