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).
Page comparing wheel balance effects between the Silver Ghost and Phantom models.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan118 | |
| Date | 21th August 1925 | |
| R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. C EXPERIMENTAL REPORT. -6- Expl. No. REF: Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG21.8.25. the two cars we are using we find that roughly 1 lb. out of balance on each Silver Ghost wheel gives the same effect as 1/4 lb. out of balance on the Phantom. We should say that it is impossible to get a standard of comparison of two types without trying a large number of cars. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} | ||