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 pump connections, engine support, and carburetter design.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page013 | |
| Date | 13th November 1931 guessed | |
| -2- PUMP CONNECTIONS & ARRANGEMENT - J.{Mr Johnson W.M.} 3. & PEREGRINE. We have been struggling with this for some time and are pleased to say that it now seems simple and satisfactory, including the convenience of draining, although this should not often be needed now that anti-freezing mixtures are so easily obtained. RADIATOR & ENGINE FRONT END SUPPORT - J.{Mr Johnson W.M.} 3. & PEREGRINE. We have had this with many modifications and have schemed an entirely rubber support so that the engine can vibrate around any centre, and in a vertical or horizontal direction at the front end with very little tendency to shake the chassis. We feel sure this will be superior to anything we have ever done. The pieces are easy to make, and assemble with the minimum of fitting. CARBURETTER. We are now all agreed that the single carburetter is the best for our work, and that although the S.U. is good in the horizontal form it still lacks many of the features which we understand you RM.{William Robotham - Chief Engineer}, and LOV.{Mr Lovesey}, have found to be needed for the best results - i.e. (1) emulsion jet, (2) throttle edge carburation - which have for some time been thought necessary for good distribution and consistent slow running. In the past the S.U. has not been very lasting in results, I believe owing to the petrol needle wearing. In our scheme the needle will never touch the sides of the restriction passage, and the conditions at low and moderate speeds will be the same as a fixed jet carburetter. We are convinced that down draught and other forms are not as safe as up draught in connection with the risk of petrol in the cylinders. R.{Sir Henry Royce} | ||