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).
Continuation page of stress and load calculations for a car's axle tube and flange assembly.
| Identifier | ExFiles\Box 2\6\ B002_X 140 141 157-page067 | |
| Date | 12th April 1913 guessed | |
| -2- standard car T.T. at point marked A.{Mr Adams} At B it is slightly stronger than it should be, 154000 instead of 148000 inch lbs, due to the fact that I did not want the thickness of metal so near flange to be less than .125 thick, as I thought there was a danger of the depth of cut being troublesome if I got down to .100 thick. The load on the ball end corres- ponding to 130000 lbs stress moment at A on G.2683, is 3500 lbs. This would entail 6300 lbs at wheel centre to balance it, which would cause a stress moment of 6360 X 23.5 = 148000 inch lbs at flange of axle tube. Now the strength of the tube as shown at flange treated as .150 thick (ignoring rein- forcement) is 170000 inch lbs or axle tubes are stronger than torque tubes in ratio of 170/148 = 1.15/1 (contd) | ||