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).
Established damper loads for the 25 HP model.
| Identifier | ExFiles\Box 106\1\ scan0302 | |
| Date | 2nd November 1931 | |
| X5410- To By.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to Sft.{Mr Swift} Hd.{Mr Hayward/Mr Huddy} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} S/KT.2.11.31. X5520. DAMPER LOADS 25 HP. The loads that have been established to suit the low rating springs on the 25 HP. are Front 90 up. 115 down. One .032 hole in the H.P. valve. Rear. 90 up. 115 down. Two .038 holes in the H.P. valve. These loads intentionally give the maximum freedom to the road springs. They should not be used with the springs of the old rating nor with stiffer continental type springs. The Repair Dept. may find it necessary to have one or more holes blocked up, or the loading otherwise altered to suit a particular customer's requirements and this is quite justifiable provided a ball pin load of 120 lbs. is not exceeded. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||