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 of various engine rubbers from Dunlop.
| Identifier | ExFiles\Box 104\1\ scan0029 | |
| Date | 5th December 1928 | |
| To ROY{Sir Henry Royce}/Ms. from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X5005 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG5.12.28. X8005 Will you please order from Messrs. Dunlop :- 2 doz. 40/50 engine rubbers 1.125" long giving 750 lbs. load at .125" deflection. 2 doz. 40/50 engine rubbers free length 1.050 giving a load of 750 lbs. at .050 deflection. 2 doz. 20 HP. engine rubbers 1.250" long giving a load of 400 lbs. at .2" deflection. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} | ||