Two graphs showing results of spring rating tests, one for internal friction and one for independent test agreement.
| Identifier | ExFiles\Box 43\2\ Scan164 | |
| Date | 27th May 1926 guessed | |
| (7) SPRING RATING TESTS (E) AND (E II) EFFECT OF INTERNAL FRICTION. WORKING RANGE RATING LBS/IN TOTAL SPRING LOAD. LBS. GRADUAL BUMP NARROW PADS VERTICAL SHACKLE E II E (a) SPRING RATING TESTS. (α) AND (β) AGREEMENT OF INDEPENDENT TESTS WIDE AXLE PADS RATING LBS/IN TOTAL LOAD. LBS. α = 21° SHACKLE β = VERTICAL SHACKLE | ||
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).