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).
Test results and average life before cracking for front axles.
| Identifier | ExFiles\Box 119\2\ scan0053 | |
| Date | 28th May 1914 guessed | |
| Wor{Arthur Wormald - General Works Manager}/Mcrl/L29414. FRO AXLE (2) Piece No. | Description. | Time. Hours. Mins. | Results. | Reference. F3391 | Front Axle. | 24 - 0 | Cracked. | Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}16/L20114. F3391 | Front Axle. | 12 - 0 | Cracked off side through spring clip hole. | Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}11/L9214 | | 15 - 30 | Cracked near side through spring clip hole. | F3391. | Front Axle. | 11 - 16 | Broke. | Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}18/L17214. Average life before cracking. F2882. Front Axle. 89 hrs. Broke. - Average over one. F3391. Front Axle. old type. 12 hrs 41 mins. cracked. - average over two. F3391. Front Axle strengthened. 22 hrs 24 mins. cracked. - average over six. | ||