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 report card detailing a bumper spring failure.
| Identifier | ExFiles\Box 38\1\ Scan072 | |
| Date | 1st September 1920 guessed | |
| BUMPER TEST. Spring. Position. Wgt. Remarks. Hrs. mins. Date. F.6408 N.S. 2000 lbs. Broken third leaf | ||