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 and test results for experimental cars, including engine noise, speed, heat, steering, and fuel supply.
| Identifier | ExFiles\Box 65a\3\ scan0039 | |
| Date | 26th June 1929 | |
| X7770 Hs.{Lord Ernest Hives - Chair} from HS{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} HS{Lord Ernest Hives - Chair}/Rn{Mr Robinson} 26.6.29. Sg.{Arthur F. Sidgreaves - MD} : With reference to the attached report from With regard to his main complaint of exhaust boom and engine noise generally in the car at speeds above 45 m.p.h. on top gear. You are familiar with the situation generally. The one hope we appear to have of improving cars at present being produced is an alteration to the subframe mounting. We think this because we have made 14-EX into a bad car by taking away the rubber and substituting metal in the subframe mounting, and we have found on 19-EX which is our worst experimental car has the scuttle armature resting on the dash. With reference to the max. speed. The SS.{S. Smith} engine develops 12 more HP. at 350 higher r.p.m; than the Phantom - which speaks for itself. With reference to the heat to the body. We have not any air shield on the silencer as yet and so we may be able to make some improvement. Steering. We can only quote PN{Mr Northey}'s remarks about 19-EX - "The steering on this chassis is the best we have ever found on a RR. car". Engine starvation. We are quite sure that the system will require the amount of petrol that the car requires for all-night driving. In fact PN.{Mr Northey} must have got some obstruction in the cork tap or some feature as we found on 18-EX. | ||