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).
Comparison of load versus deflection graphs for singly arranged and double rating spring systems.
| Identifier | ExFiles\Box 17\3\ Scan091 | |
| Date | 20th September 1926 guessed | |
| B. SINGLY ARRANGED SPRINGS INITIAL LOAD 80 LBS RATING 750 LBS / 1" LOAD LBS RATING 750 LBS SET UP 100 LBS DEFLECTION INS LIMIT OF BALL MOVEMENT C SET UP AND INITIAL DOUBLE RATING SPRINGS COMPROMISE 750 LBS SPRINGS LOAD LBS RATING 1500 LBS RATING 750 LBS SET-UP 80 LBS DEFLECTION INS LIMIT OF BALL MOVEMENT | ||