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).
Graph showing the test results for 'Myth' rear springs made by Toledo Woodhead.
| Identifier | ExFiles\Box 110\3\ scan0065 | |
| Date | 29th April 1941 | |
| TEST OF MYTH REAR SPRINGS. (MADE TOLEDO WOODHEAD) SPRING No 3 MEASURED RATE 157 LB/INCH " FRICTION 40 LB. MEASURED RATE 157 LB/INCH " FRICTION 36 LB/INCH LOAD LB. RIDE POSITION TESTS BY R.M/C.C. R.M./G.B. 29/4/41 | ||