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 of standard and lightened components for a Phantom engine.
| Identifier | ExFiles\Box 71\2\ scan0165 | |
| Date | 27th September 1926 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to BJ. Wor.{Arthur Wormald - General Works Manager} c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} X8840 Hs{Lord Ernest Hives - Chair}3/LG27.9.26. LIGHTENED PHANTOM ENGINE. X8770 We give below comparative weights of the lightened pieces in connection with the lightened Phantom engine :- lbs. Difference in weight. E.70228 EAC. std. (C.iron) cyl. head. 91.50 E.74940 alum. cyl. head (with valve seats in position) 45.18 46.32 lbs. E.70229 EAC. std. (C.iron) front cyl. 51.38 E.74941 alum. front cyl. (with liners) 30.10 21.28 lbs. E.70230 EAC. std. (C.iron) rear cyl. 50.88 E.74942 alum. rear cyl. (with liners) 29.25 21.63 lbs. E.73592 EAC. std. (C.iron) hot spot. (complete with fittings). 7.19 E.75086 alum. hot spot (complete with fittings). 4.10 3.09 lbs. E.71918 EAE. std. (C.iron) ind. pipe (complete with fittings). 14.13 E.75085 alum. Ind. pipe (complete with fittings). 5.38 8.75 lbs. Total reduction in weights :- 101.07 lbs. This engine is running on the test bed today. Hs.{Lord Ernest Hives - Chair} | ||