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).
Performance enhancements for the Phantom car, including a 16-tooth axle and experimental engine modifications.
| Identifier | ExFiles\Box 67\2\ scan0266 | |
| Date | 13th December 1926 | |
| To PN{Mr Northey}; from Hs{Lord Ernest Hives - Chair}; c. to Sg.{Arthur F. Sidgreaves - MD} c. to Cx.{Major Len W. Cox - Advertising Manager} X8420 Y469 Hs{Lord Ernest Hives - Chair}1/LG1A.12.26. Replying to PN{Mr Northey}3/EH13.12.26. We certainly recommend a 16-tooth axle on the Phantom car which will be fitted with a light streamlined open touring body. We do not think it is possible for us to ever guarantee 85 MPH. It is very probable, with a favourable road, wind and tide that this would be achieved. The results of experimental work to produce better performance have lead us into a new design of combustion chamber, position of sparking plugs and new induction system. None of these of course can be applied to existing Phantom and it will probably be a long time before they are standardised. A definite advantage can be obtained on the present car in performance by raising the compression - this of course increases the tendency for the engine to detonate. Rs.{Sir Henry Royce's Secretary} | ||