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).
Test results comparing percentage power loss between a special system and a standard Bentley system with different carburetors.
| Identifier | ExFiles\Box 152\3\ scan0226 | |
| Date | 5th November 1937 guessed | |
| Test No.1. Two similar tests were run with 1" induction systems and 1 3/4" induction system, fitting in turn No.2 special exhaust system and No.1 standard Bentley exhaust system. Results are as shown in Figs. (1) and (2) and comparative power results are shown in the following table - PERCENTAGE POWER LOSS. | | 1.625 Carbs.etc. | 1.785 Carbs.etc. | |---|---|---| | No.2. Special System | 11.8% | 11.7% | | Standard Bentley. | 19.5% | 20.8% | | ||