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).
Reporting on the road test results of a modified carburetter air valve for a 20/25 HP chassis.
| Identifier | ExFiles\Box 102\1\ scan0129 | |
| Date | 29th September 1933 | |
| To HS{Lord Ernest Hives - Chair} from Gaw Hyman X5080 29-9-33 FILE 20/25 HP Chassis Carburetter Air Valve. We have now tested on the road the modified air valve to LEC 3594 with satisfactory results, no difference in the carburation being apparent. The air valve is at present fitted on 19 GIV. Gaw Hyman | ||