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).
Test results graph showing load versus deflection for a weakened type sliding piece, RM 855.
| Identifier | ExFiles\Box 94\2\ scan0071 | |
| Date | 20th November 1936 | |
| SLIDING PIECE TESTS WEAKENED TYPE - RM{William Robotham - Chief Engineer} 855 LOAD APPLIED THROUGH ¢ OF INTERNAL TEETH DEFLECTION LOAD W LB THROUGH ¢ OF SERRATIONS DEFLECTION = INS .020 .015 .010 .005 0 A B C D E F G84834 SHOWN FOR COMPARISON LOAD = LB 200 400 600 800 | ||