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).
Feedback and proposed design changes for a shock absorber on a 40/50 HP chassis.
| Identifier | WestWitteringFiles\C\August1919\ Scan14 | |
| Date | 25th August 1919 | |
| To DA.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} Copy to Gd. " " BN.{W.O. Bentley / Mr Barrington} " " EFC. " " EH. " " BY.{R.W. Bailey - Chief Engineer} X.3461. RE SHOCK ABSORBERS - 40/50 H.P. CHASSIS. ORIGINAL RECEIVED 25 AUG 1919 The model shock absorber sent to Wittering has been inspected by Mr. Royce, and he would like the following points to have attention :- (1) The heads of all of the lubricators should be hexagons, so that they can be screwed up tightly to prevent them coming off. This is general practice for lubricators on R.R. cars. (2) The connecting link from the end of the lever to the back axle is thought to be too heavy. Some further material might perhaps be removed from the outside diameter. (3) For the purpose of keeping out water from the shock absorber fibre washers should be interposed between the vertical link carrying the weight of the petrol tank and the torque arm of the shock absorber and between the vertical link and the flange on the petrol tank itself. (4) Bronze surfaces should be provided for the ball sockets in every case, with hardened steel balls. (5) The aluminium cover of the shock absorber should be made in the form of a plain cylindrical box, as in the sketch, which is the cleanest outside shape we can use for covering in the springs and carrying the outer bearing - Fig A The provision for spigoting the springs should be tried out on paper in two ways; one by casting a series of bosses on which are riveted pressings equal in diameter to the inside of the springs, the rivet being an alum-inium lip on the forementioned boss - see fig. A.{Mr Adams} The other way is to make a die cast box with segmental departments, each of which will carry one spring - see fig. B. Fig B (6) For lubricating the upper ball end, it is desired to (Contd.) | ||