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).
Technical report on improvements and tests for ignition systems, engine mountings, and suspension components.
| Identifier | ExFiles\Box 174\3\ img220 | |
| Date | 10th April 1940 | |
| - 2 - Cont'd.{John DeLooze - Company Secretary} Improvement relative to the ignition system, that is available. During these tests special consideration will be given to the efficiency of different types of plugs. The difference between 25 thou. and 30 thou. gaps will be investigated. ENGINE MOUNTING. The only point which requires clearing up on engine mountings now, is the lighter and cheaper rear mounting; this has got to be tested on both 6's and 8's. The front mounting for 8-cyl. cars has been reported on by Rm{William Robotham - Chief Engineer}/ym in Rm{William Robotham - Chief Engineer}/ym.4/JH. 1.4.40. and the job may now be considered finalised. further tests which are considered to be desirable on front engine mountings are with reference to the hardness of the rubber. At present it is 40 - 45 and the rubber to be tested is 30 - 35 durometer hardness. SLIPPER WHEELS. Very satisfactory results have been obtained by Rm{William Robotham - Chief Engineer}/ym on 11.B.V. and these are being confirmed on 4.B.50. A report will then be issued. Humber and Studebaker type dampers will be tested on 9.B.V. FRONT SUSPENSION. Rm{William Robotham - Chief Engineer}/Clm.{D. D. Clapham} will find out what promise the Shop have given for the new dampers, and will let Rm.{William Robotham - Chief Engineer} know before 12.4.40. Taking up the sideways movement in the triangular bearings has proved to be a very definite asset in cutting out noise and Rm{William Robotham - Chief Engineer}/Clm{D. D. Clapham} should give the matter serious consideration to see how this can be incorporated in a practical scheme for production. FRONT BOTTOM SUSPENSION LEVER. The failure of the front bottom suspension lever was discussed. It was agreed that 4.B.50 should be put in the Shop immediately. These levers should be taken off and examined and if no cracks or signs of failure were evident they should be put on H's car. - Continued - | ||