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).
Bumping tests to determine the life of a bracket of a frame truss.
| Identifier | ExFiles\Box 119\2\ scan0043 | |
| Date | 1st May 1914 | |
| Wor{Arthur Wormald - General Works Manager}/Hor3/L1514. May 1st. 1914. LIFE OF PARTS ON BUMPING TESTS. BRACKET OF FRAME TRUSS. 3" Humps at 105 revs. per minute. Piece No. | Description. | Time Hrs. Mins. | Results. | Reference. T.2719. | Front Bracket of Frame Trusses. | 13 - 41 | Cracked both sides. | Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}19/L221U13. T.2719. | Front Bracket of Frame Trusses. | 13 - 54 | Broke. | Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}19/L221U13. Average Life before breaking. T.2719. Front Bracket of Frame Trusses. ) 13 hrs 48 mins. - average over two. | ||