Progress report on testing rubber components, springs, and tyre noise on the Phantom III experimental cars.
| Identifier | ExFiles\Box 157\1\ scan0313 | |
| Date | 19th March 1936 | |
| -2- The tests on rubber shackles may appear to have gone slowly. We believe, however, that before quantities of rubber are inserted in vital parts of the chassis, plenty of confirmatory evidence is required. In Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 13/KW.19.3.36, we emphasized that the test had been made on only one car. Now that we have several cars with rubber body mounting we are beginning to think that this move may have affected the steering adversely with regard to joggles. It may not be generally appreciated, but for three months 33-EX has been the only Ph.III experimental car running (apart from 30-EX, the original SpectreCodename for Phantom III I which is so obsolete as to be useless for tests of this kind) and not until the last Conference were two more available. We have repeatedly stressed this point. Springs have only just been ordered for 15,000 miles test because the designs have only just been issued. They were being held up for confirmatory tests. We agreed with this, because we have suffered a great deal on the Ph.III from work being done two and three times due to insufficient experimental data being available on which to base designs. Now that there are four Ph.III's available here, we shall shortly have a balanced view of the tyre noise problem. We are sure, however, that when we have done everything we know of to quieten the tyres on Ph.III there will still be a great deal of noise left when driving over setts, as in every other car. Our concern at present is that no Ph.III up to the present has looked like finishing a 15,000 miles test without major failures, and we are hoping to deliver cars to customers in eight weeks' time. Hs. {Lord Ernest Hives - Chair} | ||
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).