Comparing the weights of wheel and hub components for the Silver Ghost, New Phantom, and Hispano models.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan266 | |
| Date | 17th September 1925 | |
| R.R. 498A (50 H) (D.D. 31, 12-6-25) J.H.L. EXPERIMENTAL REPORT. -2- Expl. No. REF: Hs {Lord Ernest Hives - Chair} 8/1/G17.9.25. C DESCRIPTION. SILVER GHOST(1907 40/50 historic RAC 15,000 miles trial). lbs. ozs. NEW PHANTOM(Codename for PHANTOM I). lbs. ozs. HISPANO. lbs. ozs. HUB - SHELL ONLY. Dunlop. 8 4 10 9 R.W. 11 5 11 5 9 2 HUB - complete. 16 11 17 2 18 0 14 9 WHEEL - without locking nut and retaining ring. 40 3 35 14 32 0 WHEEL - locking device complete. 4 4 2 6 2 9 WHEEL - lock nut and retaining ring. 1 13 1 10 1 10 Hs. {Lord Ernest Hives - Chair} | ||
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).