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).
Order request for two types of diabolo rubbers for the 20 HP model, with specific deflection and load requirements.
| Identifier | ExFiles\Box 27\4\ Scan217 | |
| Date | 30th August 1930 | |
| O.C. From Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} X 30387 Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}1/MJ.30.8.30. Y5005 Will you please order the following diabolo rubbers for the 20 HP. - Two doz. Rubbers to F.57075 to deflect .1" under a load of 150 lbs. approx. Two doz. Rubbers to F.57075 only over all length to be 1.250 to give .200 deflection under a load of 400 lbs. approx. We want the rubbers as quickly as possible and in consequence are prepared to give Messrs. Dunlops a certain amount of latitude on the hardness of the rubber. Having tested them we may tell them more exactly what we require. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||