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).
Instruction sheet detailing failures from a bumping test and required repairs.
| Identifier | ExFiles\Box 119\2\ scan0086 | |
| Date | 13th March 1918 | |
| R.R. 26 10M Bks.) (SE 591 13-3-18). M.P. 189358 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Bumping Test continued Order No. Customer's No. 191 Hrs run | Remarks | Parts No | Total Hrs 11-5 | centre bolt OS front spring | K5900 | 38-55 33-50 | 6th & 7th leaves broken NS{Norman Scott} front spring | F4631 | 47-10 17-50 | bolt broken OS diagonal stay | K7407 | 47-10 8-20 | centre bolt OS front spring | K5900 | 47-15 42-15 | top leaf OS front spring | F4631 | 50-0 55-35 | bolt broken in dia stay OS near dumb iron | K7407 | 55-35 9-35 | bolt broken OS dia stay near Radiator | K7407 | 56-45 Test stopped through dia stay bolts breaking. reason dia bracket not true with frame Radiator shell OK | 183 hrs Shock absorbers OK want re adjusting | 183 hrs Michelin disc wheels | 183 hrs Signed This Sheet must be filed on completion of the work. | ||