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).
Potential causes for vehicle trouble, including flywheel, chassis, and crankchamber issues.
| Identifier | ExFiles\Box 102\2\ scan0017 | |
| Date | 13th March 1931 guessed | |
| (3) crankchamber. One feels that this is not our trouble, but should be proved. (a) may prove to be of great importance and fairly easy to find but costly to cure in back numbers, though easy to avoid in the immediate future as I hope and expect has already been done. I will write another memo, on "Mr. Evernden's suggest ingenious engine mounting, which with modifications in design may be useful. My last words are - let me know if chassis or power units vary. Look to possibilities of body mounting insulation. HS.{Lord Ernest Hives - Chair} E.{Mr Elliott - Chief Engineer} and EV.{Ivan Evernden - coachwork} will realise that it is no use writing theoretical and irritating differences of opinion any longer upon this subject as I am forced to do, but we must come to some very definite conclusions about this subject. It seems so far as very unsettled. (1) Whether the body booms and noises are worse in P.2. than P.1. If so, why? because we have our own P.1. to compare. (2) Whether bodies are greater boomers than the older ones. (3) Whether comparable chassis such as Hispano and Bentley are better than we are. (4) If the chassis very from one to another. (5) If the one fault which I am inclined to admit - i.e. the whirring flywheel - actually exists and is the trouble. (6) If the back plate and mounting of the P.2 flywheel is more flexible than P.1. There is no need to trouble about this flywheel if the flywheel is not to blame. (7) If the crankchamber is stressed more by heavier pins and big ends, and tests its running deflection at the speed complained of - 2500 revs. This is the period of the crankchamber. I do not believe for a moment that the combined gearbox has anything to do with it. I do so far believe that we have a whirling flywheel which we ought to find out all about in a few days, and definitely alter to a higher speed than 2500 revs. | ||