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).
Follow-up report requesting further information on various vehicle component issues after a 10,000-mile test.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page290 | |
| Date | 10th April 1933 | |
| X4017 S/W. Hs.{Lord Ernest Hives - Chair}..from Sg.{Arthur F. Sidgreaves - MD} Copy to Wor.{Arthur Wormald - General Works Manager} E.{Mr Elliott - Chief Engineer} Sg.{Arthur F. Sidgreaves - MD}1/WT10.4.33. Report on 3 Per.II at 10,000 miles. Under your Ref.Hs.{Lord Ernest Hives - Chair}6/MJ27.3.33. On perusing this report the following points stand out, about which I should like further information. Page 1. Engine. A very rough period is described at 64 m.p.h. (i.e. 4,000 engine revs.) and after. It is later explained that the design of the exhaust system had much influence on this point. Are you satisfied that you are able greatly to reduce this period, and if so by what means ? High Oil Temperature. Apparently no means is being found to deal with this trouble in the absence of setting aside a certain portion of the water radiator for the purpose of oil cooling. Is the design for this now in your hands ? There would appear to be no more important point than this requiring attention on the car. Electric Petrol Pumps. The fabric diaphrams of these appear to have a life underneath 10,000 miles, and when beginning to deteriorate much annoyance and irritating running is likely to be felt especially when starting up the car first thing. Have you any other more satisfactory alternative to this fabric, or are you in the circumstances satisfied that the pump is a better scheme than the Autovac? Piston. Apparently much of the high consumption of lubricating oil can be attributed to the inability of the piston rings to prevent the oil getting into the cylinders. Has this point now been dealt with ? Connecting Rod Bearings. Apparently the failure of these bearings can be definitely attributed to the high temperature of the oil, and this trouble will be dealt with satisfactorily when the cooling method is improved? Valve Gear Noisy. Why should these valves have been consistently noisy ? It would certainly not do in production for a car of this type to have noisy valves. Is it proposed to introduce the automatic adjustment on this engine, which appears to be so satisfactory on J.III ? | ||