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 sliding effort against torque for Peregrine propellor shaft splines.
| Identifier | ExFiles\Box 2\1\ B002_136 137-page18 | |
| Date | 18th November 1932 | |
| PEREGRINE PROPELLOR SHAFT SPLINES ALL TESTS TAKEN ON SHORT TYPE TUBES - RRS. 168 B.11 32 18.11.32 SLIDING EFFORT LB TORQUE LB FT STANDARD 3/N SPLINES HARDENED 3/N 3/4N WHITE-METALLED | ||