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).
Supply and design status of Dunlop 'Fort' Silent Tread Tyres for the 20-HP model.
| Identifier | ExFiles\Box 58\1\ Scan082 | |
| Date | 28th March 1929 | |
| Hs.{Lord Ernest Hives - Chair} X5820 ROY{Sir Henry Royce}/GEA4/EB28.3.29. 20-HP. TYRES. Referring to your memo reference - Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG25.3.29. The Dunlop Company inform us that a mould is in existence for the manufacture of 31 x 6.00 "Fort" Dunlop Silent Tread Tyres, but the final details of design have not yet been settled. They are asking their works to give the matter immediate attention with a view to the provision of six tyres for our tests without loss of time, and will write us again in the next day or so. Immediately we receive further news, we will advise you. ROY.{Sir Henry Royce} | ||