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 objectives for a replacement engine, focusing on camshaft performance and bearing adhesion qualities.
| Identifier | ExFiles\Box 92\6\ scan0159 | |
| Date | 31th May 1937 | |
| T300B Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}13/R.31.5.37. We want a replacement engine for the Continental P.III. I have in mind that the best unit would be one exactly similar to that you have fitted to 32-EX, except for the flexible flywheel, cylinder head and induction system as at present fitted to the Continental. The main object of the test is:- (1) To see whether the new camshaft completely eliminates the warming up period. (2) See if the low speed torque is improved with this camshaft. (3) See if the pick-up roughness is reduced by the crankshaft having standardised pins. (4) To ascertain whether there is any loss in top speed performance. Before any engine leaves the Test Bed a figure should be obtained for power output, the open exhaust system has been rather apt to be misleading. Bearings. Bristol's mention that one of the merits of Hoyt's No.6 was its excellent adhesion. In view of what appears to be the poor adhesion on the big-ends which had to be removed from the 15,000 mile car, I should like to know whether you do not think Hoyt's No.6 might not be worth trying on the strength of its adhesion qualities alone. Rm.{William Robotham - Chief Engineer} | ||