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).
Testing of jacks and the weight of a front harmonic stabilising bumper on a 20/25 HP car.
| Identifier | ExFiles\Box 103\1\ scan0144 | |
| Date | 29th November 1934 | |
| W/S - C. c. to BG. c. to HOr. c. to E.{Mr Elliott - Chief Engineer} X5300 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}6/KW. 29.11.34. 20/25 HP. Car - GZU-24. Replying to C15/C. 26.11.34. We should like you to make a point of having the car jacked up as frequently as is convenient for a few weeks, in order to test out these Jacks. If, in addition, somebody could take the car to a fairly steep hill and jack it up, and also do the same thing on a heavily cambered road, it would satisfy us that these jacks are reasonably serviceable. After these tests the cast brackets attaching the Jacks to the axles should be examined, as these are the weakest points. The front harmonic stabilising bumper fitted to this car weighs 66 lbs. After our experience with the Bentley we feel that this is unnecessarily heavy. If therefore at any time it is felt that the front end movement on certain types of 20/25 warrants an harmonic stabiliser, we shall go into the question of developing something of a more reasonable weight. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||