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).
Continued table (Sheet 4) detailing spring combination specifications, including load, rate, and stress.
| Identifier | ExFiles\Box 154\1\ scan0175 | |
| Date | 31th August 1934 guessed | |
| SHEET (4) TABLE II - CONTINUED. | No. of Combination | Outer Spring Designation | Inner Spring Designation | Normal Load at Wheel | Rate at Wheel | Max. Stress Outer and Inner. | |--------------------|--------------------------|--------------------------|----------------------|---------------|------------------------------| | 13 | D.O. | A.1. | 1141 lbs. | 111.2 lbs/in. | 112,700 lbs/in^2 outer. | | 14 | D.O. | B.1 | 1149 lbs. | 110.2 lbs/in. | 112,700 lbs/in^2 outer. | | 15 | D.O. | C.1. | 1220 lbs. | 120.3 lbs/in. | 112,700 lbs/in^2 outer. | | 16 X | D.O. | D.1. | 1250 lbs. | 124 lbs/in. | 112,700 lbs/in^2 both. | X - Indicates combinations as designed. | ||