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).
Issues with rear shock absorbers, including bolt stretching and loose levers on a bumping rig and an EX Car.
| Identifier | ExFiles\Box 119\2\ scan0087 | |
| Date | 2nd February 1920 | |
| X.1331 To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to By.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} Hs{Lord Ernest Hives - Chair}1/LG2.2.20. X.3461. - RE REAR SHOCK ABSORBERS. X.1331. X.3743. We are running a set of shock absorbers on the bumping rig. They are fitted with all the latest modifications. After 6 hours running we noticed that the levers were slightly slack where they fix on the square end of the rotor. We tightened up the bolt very tightly and ran on again for another 2 hours and found they had worked slack again. It appears as though the bolt stretches. 2.EX Car which is running the 10,000 miles has also had trouble with the rear shock absorbers. The explanation which has been given is that the bolt stretched and the lever worked loose on the rotor and that the biting-in-bolt was not let into the square end of the rotor sufficiently so that the lever fell off together. The drawing shews the biting-in-bolt let in .050". For the lever to have come right off, it does not appear as though this could have been carried out, until we see the pieces it is impossible to say. We have found a case where the large diameter taper which fixes the bracket to the axle has worked loose. At present this is a drilled bolt but it does appear that it would be better if it was solid. Contd. | ||