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).
Performance graph showing cable pull against distance for a winch with different gear ratios.
| Identifier | ExFiles\Box 175\2\ img130 | |
| Date | 31th May 1941 | |
| WINCH 2.285 GEAR RATIO 2.53 2.96 PULL IN CABLE LBS 2.53 RATIO 2.96 RATIO FROM START AS RUN FT 2500 3000 3500 4000 4500 4750 750 1000 1250 1500 1750 2000 31.5.41 | ||