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).
List of complaints and their corresponding cures, alongside a summary of Bentley engine testing and development.
| Identifier | ExFiles\Box 148\5\ scan0081 | |
| Date | 11th July 1935 | |
| -3- HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}10/KW.11.7.35. Complaint. (10) Big end bearing failures experienced on one or two of Sr's customers' cars on the Continent. (11) Carburetters catching fire. (12) Brakes difficult to adjust. (13) Loss of oil pressure when braking. (14) Excessive water temperature at high road speeds. Cure. Lead bronze big end bearings. Drainage scheme to prevent this occurring. Easy brake adjustment scheme. Modified bottom half. Unbalanced radiator shutters. During the past 12 months we have run a Type Test on the Bentley engine, developing 30 B.H.P. per litre, for 100 hours, this on an engine which has to run on 72 octane fuel, having a speed range where it develops maximum torque from 500 revs. to 4500, and is given no oil cooler on the road. On the same unit we have run 10 hours at 41 B.H.P. per litre. This output is up to any type test figures we have so far carried out on aero engines. At the moment, a considerable amount of development work is being debited to the Bentley because it is done on Bentley units, and yet is being carried out directly for the development of other models. As an example, the majority of the induction pipe work reported on in HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}14/KW.8.7.35. and HS{Lord Ernest Hives - Chair}/GTR.18/KW.8.7.35. and piston development work, was for the SpectreCodename for Phantom III. | ||