Alterations for a flexible flywheel disc for a Bentley V, including a sketch.
| Identifier | ExFiles\Box 99\1\ scan0093 | |
| Date | 20th April 1939 | |
| 41R also 600c To By. {R.W. Bailey - Chief Engineer} Rm {William Robotham - Chief Engineer} /NRC. {N. R. Chandler} 8/JH.20.4.39. Bentley V. {VIENNA} etc. re Flexible flywheel Disc GB.4417. We have recently made a disc exactly similar to the above, but thinner, as sketch below, we estimate this would increase the deflection for a given load by about 50%, but since the deflection is probably not increased, the stress will be lower. One of these thinner discs is running satisfactorily on 29.G.VI, and was made to sketch Rm. {William Robotham - Chief Engineer} 584. We suggest you have GB.4417 retraced with a new number, with the following alterations, this new part to superceed GB.4417. .425 R .110 (.020 LESS) +-3 .080 (.010 LESS) +-2 OTHERWISE AS GB-4417. Rm {William Robotham - Chief Engineer} /NRC. {N. R. Chandler} | ||
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).