Communication regarding the implementation of lower rated slipper flywheel springs for the Wraith III model.
| Identifier | ExFiles\Box 8\1\ 01-page43 | |
| Date | 3rd July 1937 | |
| GRY {Shadwell Grylls} [signature] 612. SECRET. c. WHS. Rm. {William Robotham - Chief Engineer} Wraith III. We send you herewith Lec.5782 Slipper Flywheel Springs (Lower Rating). This scheme shows lower rated springs applied to the slipper flywheel on Wraith. The previous springs had such a high rate that the poundage was quickly lost when the cotton ducks "settled down" during use. E {Mr Elliott - Chief Engineer} /JNR. {Charles L. Jenner} | ||
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).