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).
Issues and potential modifications for Phantom III main and big end bearings.
| Identifier | ExFiles\Box 115\3\ scan0021 | |
| Date | 14th July 1937 | |
| Rm{William Robotham - Chief Engineer} 1020 S/W To Bx. from Sg.{Arthur F. Sidgreaves - MD} Copy to Rm.{William Robotham - Chief Engineer}Hsr. re P.III Bearings. Sg{Arthur F. Sidgreaves - MD}25/E14.7.37 Referring to Rm.{William Robotham - Chief Engineer}1/AP.4.6.37, copy of which you had, I meant to have referred to this yesterday afternoon but I am afraid I overlooked it. If you will refer to the schedule attached to Rm{William Robotham - Chief Engineer}'s memo. you will see he says: BEARING. PHANTOM III. MAIN BEARINGS. PRESENT POSITION NOT QUITE GOOD ENOUGH. INCREASED AREA CAN BE OBTAINED BY MODIFICATIONS TO CRANKSHAFT RECOMMENDED IN Rm.{William Robotham - Chief Engineer}378 BIG ENDS. PRESENT POSITION UNSATISFACTORY ONLY SOLUTION FOR EXISTING CARS AT PRESENT AVAIL-ABLE, CADMIUM NICKEL BEARINGS. CONSIDERABLE IN-CREASE IN BEARING AREA CAN BE OBTAINED BY GRANK RECOMMENDED IN Rm.{William Robotham - Chief Engineer}378. We did discuss it once but I am afraid I do not remember what was decided. What I really want to know is how soon we can take advantage of the modification in question. Sg.{Arthur F. Sidgreaves - MD} | ||