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 speed and pull against distance for a 12' drum system at different ratios.
| Identifier | ExFiles\Box 175\2\ img139 | |
| Date | 31th May 1944 guessed | |
| PILOTING W 12" DRUM CABLE SPEED M.P.H 100 80 60 40 20 SPEED 2.225 RATIO PULL 2.325 RATIO DISTANCE 500 1000 1500 2000 | ||