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).
Laboratory report on clutch facing test pieces, detailing maximum stress results for English 'HYCOE' material.
| Identifier | ExFiles\Box 129\3\ scan0323 | |
| Date | 29th June 1936 | |
| Hs{Lord Ernest Hives - Chair}/SMTH. & 1110 ple LABORATORY. 29.6.36. SEE YOUR REF:- Hs{Lord Ernest Hives - Chair}/SMTH.22/K.W.25.6.36. CLUTCH FACING TEST PIECES. English "HYCOE" MATERIAL. | MARKED. | WIDTH. | THICKNESS. | AREA. | MAXIMUM STRESS. TONS.ACTUAL. | TONS /□" | MAXIMUM STRESS. lbs.ACTUAL. | lbs./□" | |---------|---------|------------|---------|------------------------------|-----------|-----------------------------|---------| | A.{Mr Adams} | .664" | .124" | .08233 | .089 | 1.081 | 199.4 | 2,421 | | B. | .656" | .122" | .08004 | .122 | 1.524 | 272.3 | 3,429 | | C. | .688" | .126" | .08670 | .132 | 1.523 | 295.6 | 3,411 | | D.{John DeLooze - Company Secretary} | .689" | .126" | .08682 | .060 | 0.6911 | 134.4 | 1,548 | | E.{Mr Elliott - Chief Engineer} | .678" | .131" | .08880 | .060 | 0.6757 | 134.4 | 1,514 | | F.{Mr Friese} | .701" | .127" | .08902 | .037 | 0.4157 | 82.87 | 931 | CLUTCH FACING TEST PIECES. SUBMITTED:- MAY 25th 1936. | A.{Mr Adams} | .6355 | .1273 | .08072 | .227 | 2.812 | 508.4 | 6,298 | | B. | .425 | .127 | .05398 | .192 | 3.557 | 430.0 | 7,968 | BROKEN TEST PIECES RETURNED HEREWITH. HL. HE | ||