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).
Note from Mr Royce detailing a practical experiment for testing axle strength.
| Identifier | ExFiles\Box 49\1\ Scan007 | |
| Date | 12th March 1912 | |
| R.R. 235A (100 H) (X39L. R219) G 2808 AXLES Written by Mr Royce on March 12th.1912. Handed to T.C. March 14th. Mr Royce said - Our standard axle now appears too large and heavy. Before reducing it we must make tests to know what they will stand. Strength should be definite-ly tested by practical experiment. For shock and impact tests a large piece of timber of known size and weight etc. should hang by two pairs of ropes. The timber should be dragged back a definite distance and then allowed to swing forward on to the rear wheels which should be fitted with plain Palmer tyres having known air pressure, say 80 lbs. The distance pulled back should be increased for each test and applied to each wheel alternatively. Examination should be made after each test for failures and permanent set. This test should be carried out with the old type of axle also for comparison. [Handwritten on left margin]: X339 [Faint watermark at bottom]: MADE AT BOXLEY | ||