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).
Graph plotting cable pull against distance for various gear ratios and speed.
| Identifier | ExFiles\Box 175\2\ img137 | |
| Date | 1st January 1941 guessed | |
| CABLE PULL - LBS 2.22 2.53 2.96 2.06 Ratio 2.48 RATIO 2.225 RATIO 2.63 Ratio SPEED DISTANCE 500 1000 1500 2000 | ||