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).
Weight comparison memo for new Sports versus Standard Phantom engine components.
| Identifier | ExFiles\Box 71\2\ scan0201 | |
| Date | 21th November 1927 | |
| To Hs.{Lord Ernest Hives - Chair} from RHC.{R. H. Coverley - Production Engineer} X8840 RHC{R. H. Coverley - Production Engineer}16/BE. 21.11.27. We give below revised weights of new Sports Pieces as compared with Standard Phantom. | | COMPLETE WEIGHTS(LBS) | | | | |---|---|---|---|---| | | STD: PHANTOM | SPORTS PHANTOM | PHANTOM REDUCTION | SPORTS RED: | | Push Rods - complete set. | 2.25 | 2.66 | .51 | | | Pistons - complete set. | 15.3 | 14.10 | | 1.20 | | Spring Drive. | 37.12 | 36.62 | | .50 | | Crankshaft. | 72.37 | 57.62 | | 14.75 | | Connecting Rods(STANDARD) | (Set) | | | | | Large End Small End | | | | | | 2.51 lbs .86 lbs = 3.37 each | 20.22 | | | | | Connecting Rods(SPORTS) | | (Set) | | | | Large End Small End | | | | | | 2.00 lbs .64 lbs = 2.64 each | | 15.78 | | 4.44 | | SAVING IN WEIGHT | - | | | 20.81 | RHC.{R. H. Coverley - Production Engineer} | ||