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).
Performance test results comparing a Standard Carburetor with an R.R. Semi-expanding Carburetor on a 22-EX model.
| Identifier | ExFiles\Box 155\1\ scan0021 | |
| Date | 13th July 1932 guessed | |
| -3- 22-EX. Standard Carb. Lap Speed Cut out Closed 80.2 M.P.H. " " Open 83.99 M.P.H. ½ Mile " " Closed 79.6 M.P.H. " " Open. 82.57 M.P.H. 22-EX. R.R. Semi-expanding Carb. Lap Speed Cut out Closed. 83 M.P.H. " " Open 84.7 M.P.H. ½ mile " " Closed 86.96 M.P.H. " " Open. 85.71 M.P.H. 114º Camshaft W.W. 5.25 C/R. P.II Long Type Silencer. Low Rating springs, hydraulics only. Hs {Lord Ernest Hives - Chair} /A.J.Lidsey. | ||