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 exhaust systems on Terraplane mountings and evaluating alternative suspension designs.
| Identifier | ExFiles\Box 14\6\ Scan304 | |
| Date | 26th April 1934 | |
| To E.{Mr Elliott - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X7230 F250 423 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} 7/KW. 26.4.34. Exhaust Systems. When we come on to the Terraplane mounting the exhaust system requires more freedom than at present. On existing cars there is the trouble of the front expansion box growing outwards, by repeated heating and cooling of the pipe, and touching the frame. To overcome this we have tied the exhaust pipe to the gearbox and think this is a good scheme. We do not consider the present rubber and spring exhaust system ideal for the Terraplane engine mounting; at present it is a source of squeaks and has not really quite enough freedom for the job. If we increase the amount of movement, the squeaks will probably get worse. We still consider that the best suspension we have had for the exhaust system was the shock absorber arm which ran 10,000 miles with G.W.Hancock in France, and has been running ever since on different cars. At the present moment we are running this in conjunction with a new mounting on 20-G-IV. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||