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).
Axle strength test results for a standard 700 type load applied in the centre of the box.
| Identifier | ExFiles\Box 49\1\ Scan016 | |
| Date | 13th October 1911 | |
| R.R. 148 (90) (W353 13.10.11) G 2351. Axle strength tests standard axle 700 type load applied in center of box Weight | Deflection across flanges at top | Deflection across flanges at bottom | Deflection at bottom of box | From end of Tube to inner axle 0 | 0 | -.030 | 0 | 11.640" 2448 lbs | -.007 | -.035 | .024" | — 3792 " | -.013 | +.041 | .057" | — 5136 " | -.018 | +.046 | .098 | — 6480 " | -.025" | +.056 | .158" | 11.625" 7824 " | -.034" | +.065 | .210" | 11.509" 9168 " | -.044" | +.080 | .288" | — 9,840 " | -.055" | +.090 | .342" | — 10,552 " | -.064 | -.108 | .411" | 11.593 11,184 " | -.079 | +.120 | .500 | — 11856 " | -.094 | +.140 | .616 | — 0 " | -.053 | -.060 | .287 | — 11,184 " | -.094 | +.135 | .586 | — 11856 " | -.104 | +.150 | .631 | — 12528 " | -.109 | +.152 | .723 | — | ||