Blueprint of a modified Kelsey Hayes rig for testing a front hub and drum.
| Identifier | ExFiles\Box 141\2\ scan0351 | |
| Date | 19th April 1941 | |
| THIS ROTATES AT 30 R.P.M WEIGHT MODIFIED KELSEY HAYES RIG FOR TESTING FRONT HUB & DRUM. Rm {William Robotham - Chief Engineer} /G.B. 19/4/41 | ||
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).