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 for torsion and bending on a 40/50 HP front axle to specification N.SCH.979.
| Identifier | ExFiles\Box 49\4\ Scan122 | |
| Date | 20th December 1921 | |
| X3441 TESTS ON 40/50 H.P. FRONT AXLE TO N.SCH.979 Handwritten Note: Reatts/LG 20.12.21 for blue prints LOAD. | TORSION. TOP. | TORSION. BOTTOM. | TORSION. DEFLECTION. | BENDING. PERMANENT SET. | BEND IN CENTRE OF AXLE. DEFLECTION. 300 lbs. | .018 | .010 | .018 | .002 | .002 500 " | .042 | .029 | .040 | --- | .005 700 " | .068 | .051 | .062 | --- | .008 900 " | .092 | .076 | .087 | .003 | .012 1100 " | .119 | .104 | .116 | .005 | .017 1300 " | .138 | .119 | .134 | .008 | .020 1500 " | .173 | .159 | .162 | .011 | .023 1700 " | .200 | .189 | .181 | .014 | .029 1900 " | .214 | .200 | .201 | .017 | .033 2100 " | .243 | .215 | .237 | .020 | .039 2300 " | .263 | .236 | .237 | .020 | .042 2500 " | .284 | .261 | .271 | .023 | .046 2700 " | .318 | .285 | .302 | .029 | .050 2900 " | .340 | .291 | .330 | .030 | .054 3100 " | .353 | .336 | .340 | .033 | .057 3300 " | .385 | .345 | .350 | .033 | .058 3500 " | .413 | .367 | .386 | .033 | .060 3700 " | .433 | .391 | .401 | .033 | .064 3900 " | .453 | .409 | .419 | .033 | .067 4100 " | .467 | .423 | .442 | .033 | .070 4300 " | .488 | .455 | .470 | .033 | .074 4500 " | .511 | .478 | .503 | .034 | .079 4700 " | .551 | .496 | .517 | .035 | .083 4900 " | .581 | .514 | .531 | .036 | .087 5100 " | .601 | .532 | .545 | .036 | .089. Footer (upside down): R.R. 253A (100) (T. 288, 10M-12-20) C. 2547 | ||