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 report on the performance and carburation issues of a Stromberg downdraught carburetter.
| Identifier | ExFiles\Box 102\1\ scan0373 | |
| Date | 9th September 1935 | |
| To Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}: X508 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}2/KW.9.9.35. 20-G-IV. 3 1/4" bore fitted with Stromberg downdraught carburetter. Mileage 769. Petrol used - 47 gallons. Consumption - 16.35 m.p.g. Oil used - about 2 1/2 gallons. Carburetion. Starting difficult on cold morning. Starter turns engine very slowly. Carburation is then weak until water reaches about 70°C. No position of control richens up correct amount at all speeds. If control is moved sufficiently towards rich to accelerate, it is then too rich after about 2,000 r.p.m. and misfires. When engine is hot, carburation O.K. under any conditions of cornering or braking. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||