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).
Results of bumping tests on axle tubes.
| Identifier | ExFiles\Box 119\2\ scan0038 | |
| Date | 29th April 1914 | |
| Wor{Arthur Wormald - General Works Manager}/Mcr3/L29414 April 29th. 1914. LIFE OF PARTS ON BUMPING TESTS. AXLE TUBES. 3" Humps at 105 revs. per minute. Piece No. Description. Time Hrs. Mins. Results. Reference. G2103. Axle Tube, off side. 6 - 40 Broke. Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}4/L6314 G2760. Axle Tube, near side. 2 - 50 Broke off at shoulder near inner wheel bearing. Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}5/L30314. | ||