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).
Posing questions about replacing a Bijur-Luvax chassis lubrication pump with a Tecalemit unit.
| Identifier | ExFiles\Box 141\2\ scan0166 | |
| Date | 30th December 1938 | |
| 1184 To HPS{Horace Percy Smith - Experimental Factory Mgr}/WB.{Mr Brazier/Mr Bell} from Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} c. Da.{Bernard Day - Chassis Design} Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}3/MH.{M. Huckerby}30.12.38. CHASSIS LUBRICATION. We want to replace the Bijur-Luvax pump on our chassis by an automatically operated Tecalemit unit, one sample of which we have given to you. Before we can decide how to rig it up, there is a certain amount of data we must have. Will you please determine the answers to the following:- (1) The unit is intended to bolt on to the crankcase lower half, thus dispensing with a separate reservoir which requires filling. Will the viscosity change in the oil adversely affect the unit in any way, such as the delivery from the pumps. (2) The unit is intended to deliver a certain quantity of oil per stroke into each of the six pipes. The quantity can be regulated. Will you determine the maximum and minimum quantity that can be delivered by one complete stroke of one pump. (3) It is possible to operate the pump by the suspension mechanism. Will you say how the unit behaves when the operating lever is moved through only part of its stroke. It should be possible to set each of the six pumps to different discharges, and then determine the latter for a full stroke at 0.9, 0.8, 0.7 etc. of a full stroke. (4) It is possible to operate the unit by a speedometer cable and reduction gear. Will you determine if the pumps work satisfactorily when moved very slowly, or if the leak by the pistons affects the discharge. (5) In deciding on the manner of working the Tecalemit unit, a comparison of discharge from it as compared to the Luvax system is necessary. The rates of flow from the meter valves of the Luvax unit are as follows:- | ||