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).
Load test report on a stub axle pivot, detailing measurement data under increasing loads and observations on failure.
| Identifier | ExFiles\Box 2\12\ B002_X168-page010 | |
| Date | 16th May 1938 | |
| STUB AXLE TESTS -2- 5200 lbs. .292" .072" .004" .001" 5600 " .318" .078" .007" .002" 6000 " .344" .084" .007" .002" 6400 " .363" .091" .009" .0025" 6800 " .394" .098" .013" .0035" 7200 " .422" .109" .019" .0045" 7600 " .450" .114" .083" .0055" Pivot gave a sharp loud crack, no visible signs of a break but a rapid increase in the figures. 8000 " .515" .125" .066" .008" 8400 " .573" .133" .115" .010" 8800 " .670" .140" .165" .010" 9200 " .758" .162" .217" .014" 9600 " .839" .174" .270" .017" 10000 " .970" .190" .380" .024" 10400 " 1.110" .210" .510" .035" Pivot slight-ly tight. 10800 = 1.275" .230" .685" .047" Pivot now quite stiff. 11200 " 1.520" .295" .812" .057" 11600 " 1.790" .349" 1.045" .070" 12000 " 2.040" .400" 1.335" .083" Condition of pivot after test, the pivot pin busher was .062" out of line, the rest of the permanent set had taken place in the stub axle close up to the neck. [Diagram of a pivot] Bushes .062 out of Line Pivot bent from here. | ||