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).
Investigating the suitability of Ford-sized tyres (760 m/m) for the 20 HP chassis.
| Identifier | ExFiles\Box 1\7\ B001_X15 20 46 50 59-page127 | |
| Date | 1st August 1919 | |
| R.R 235 a (100 T) (S.F. 578. 16-4-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2354 X20 To DA.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} Copy to J.{Mr Johnson W.M.} " " BM. " " EH. " " EFC. E4/G22/8/19. FE WHEELS FOR 20 H.P. CHASSIS. X.3631 Referring to the wheel and tyre size of the 20 H.P. chassis, it has occurred to Mr. Royce that 760 m/m diameter is the size of Ford tyres, and as an oversize tyre is now generally supplied for Ford cars, and would therefore be available in quantity, this same tyre might be suitable for our chassis, and if large enough in section, would enable us to still use 760 m/m diameter. Would you kindly therefore, in accordance with Mr. Royce's wishes, find out if these tyres are suitable for the purpose proposed. | ||