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 on a 49-GB car to prove the Dorris scheme with a hot-spot throttle.
| Identifier | ExFiles\Box 50\3\ Scan262 | |
| Date | 27th March 1923 | |
| X4305 Mr. Hives. from CWH. 27.3.23. 49-GB CAR. Tests to prove whether Dorris scheme is wanted with hot-spot throttle. Amount of petrol collected 1.25 C.I. after starting up from cold. GWH. {George W. Hancock - Head Chateauroux} | ||