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).
Meeting notes discussing a suggestion by Mr. Barrington regarding engine rattles and the transmission of rotary vibrations to the chassis.
| Identifier | ExFiles\Box 3\1\ 01-page074 | |
| Date | 4th December 1911 | |
| Design Meeting 4th Dec.11. Mr Barrington informed the Committee that he had made a suggestion some months ago, concerning engine rattles, but it had then been decided that nothing should be done. The point that he suggested was worth investigation was that we were not at all clear how these rotary vibrations, which could be entirely removed by the removal of the brake drum, were transmitted from the shaft to the frame. If the vibrations were purely rotary, (as was proved by the removal of the brake drum) he suggested that the chassis vibration was set up from this rotary vibration by the reaction from the drive being taken on one top speed jaw, on the front bearing of the gear box. He had suggested that the jaws should be omitted experimentally, and the driven taken by a solid shaft replacing the present divided shaft. He again suggested that this was worth trying in order to discover how these rotary vibrations were transformed and became ordinary chassis vibrations. It should be understood that a self-contained rotary vibration would not be felt on the chassis. The Committee agreed that the vibrations were transformed into chassis vibrations by the reaction on either the bevel pinion or the inertia effect of the pistons. The Committee, therefore, decided not to experiment in the direction suggested. | ||