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).
Recommendation to continue with the present bonnet for the 40/50 'R' series due to issues with water boiling.
| Identifier | ExFiles\Box 119\3\ scan0090 | |
| Date | 9th September 1922 | |
| BY.{R.W. Bailey - Chief Engineer} from Hs.{Lord Ernest Hives - Chair} X1085 Hs{Lord Ernest Hives - Chair}3/LG4.9.22. 40/50 BONNETS FOR "R" SERIES. Y3421 We recommend that we hold up the modification to the Bonnet to do without the shutters which was standardised sometime ago. As we are already in trouble with the water boiling, it would appear unwise to do this. Our recommendation is that we should continue with the present bonnet. Hs.{Lord Ernest Hives - Chair} | ||