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).
Summary of settings and modifications for a Stromberg DB.42 carburetter on unit E-3-M.
| Identifier | ExFiles\Box 20\9\ Scan100 | |
| Date | 22th January 1936 | |
| X1033 To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to Hs{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation} Hs{Lord Ernest Hives - Chair}/C.R.10/JH.22.1.36. CUB.5. Unit E-3-M.{Mr Moon / Mr Moore} The Stromberg carburetter DB.{Donald Bastow - Suspensions}42. on this car was brought up to date in setting and controls etc. E.63210 spring fitted to radiator thermostat for winter running. This increased water temperature to average of 78/80°C. Choke 1 1/4" dia. Main metering jet .064. Bypass jet .C42. Main discharge tube with single feed hole 56. Idle tube jet 64. Pump jet 70. Air bleed 70. Seating .130 Petrol Level .625 " Diameter of pump links split pin increased from 1/32" to 1/16". Piston stop set .250" and thermostat set at 16. HE/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Ratcliffe. | ||