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).
High-pressure petrol pump issue on chassis 3.CM.79, concluding the fault was dirt, not the pump.
| Identifier | ExFiles\Box 96\1\ scan0260 | |
| Date | 18th January 1938 | |
| 361 also 1263 W/N - Br/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}3/JH.18.1.38. HIGH PRESSURE PETROL PUMP OF CHASSIS 3.CM.79. Following a telephone conversation with Mr. Cliburn and receipt of your memo. ref. BR/G.1/M.12.1.38. we have received the petrol pump G5.1930 off the above chassis. We have fitted this pump on a Phantom III chassis and have had no flooding whatever and on the rig the pump was quite satisfactory the pressure head developed being 9 feet of petrol. We have had a previous case of this kind in which the pump was blamed and in this case it was entirely due to dirt and a bad needle seating in the carburettor. If there is dirt in the pipe from the filter in the V to the carburettor it will cause trouble. The alleged cure affected when the pump was removed is probably due to the fact that the petrol will run back down the pipe and may remove the dirt and not due to the change of pump or alteration to it. The correct needle seating for the carburettor is .140" diameter. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} | ||