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).
Letter to Dunlop Rubber Co. regarding the supply and specifications of tyres and wheels for a 40/50 HP car.
| Identifier | ExFiles\Box 45\2\ Scan085 | |
| Date | 25th September 1928 | |
| HS{Lord Ernest Hives - Chair}/RmL/LG. Expl: Dept: 25th. Sept. 1928. +4058 Y4565 Messrs. The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Paull. With reference to our conversation yesterday, We confirm that we should like you to supply us with a complete set of 6 Super 6.75" tyres for 21" rims for the 40/50 HP. car having an outside diameter of 35.7". With reference to the 20" rims however - our car which is going to run in France is equipped with short hubs, which as you know means a new wheel centre. As there are no more of these wheel centres available, it would appear to be quite impossible to build up a set of wheels suitable for this car in the time available. We therefore suggest that for the time being we leave the 20" rims equipped with 34.7" tyres until we are able to obtain these with short hubs. There is another point - we cannot fit 20" rims on the 40/50 HP. car without alteration to our steering so that we shall also have to go into this matter. We suggest that, instead of these small rims, you supply us with two Fort type silent tread standard 6.75" tyres. Summarising the position therefore, We shall have 6 Super and 2 Fort tyres from which we hope to be able to get some useful information on steering when comparing them with our standard silent tread tyres. We should be glad if you could let us know whether we could obtain silent tread tyres in Paris from your Continental office and if so, whether they will be Fort or standard dimensions. Yours faithfully, | ||