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).
Design suggestions and decisions for various engine components related to the 'Myth Detail Drawings'.
Identifier | ExFiles\Box 109\3\ scan0079 | |
Date | 20th March 1941 | |
To WPC. from Jnr.{Charles L. Jenner} c.c. to Rm.{William Robotham - Chief Engineer} c.c. to Rm{William Robotham - Chief Engineer}/HH. Jnr.{Charles L. Jenner}1/SW.20.3.41. Myth Detail Drawings. I have carefully been over all of your suggestions and debated them with Mr.Bellamy. No.1. Crankshaft Oil Seal projecting from rear of crankcase. This has been considered more than once. It is really dictated by the Gearbox Designer, as it saves overall length and it is the practice of Buick, Packard and Vauxhall. No.2. RE.1792 - Oil Pump Drive Shaft. The object of the collar is only to position the shaft when erecting, and a square section circlip is worth a trial although there is a possibility of the shaft breaking in torsion at this spot. No.3. RE.1795. We agree to make the splines .1 shorter. No.4. RE.1629 - Exhaust Manifolds. The manifold must be fixed horizontally and yet allowance made for the expansion of the pipe, to get rid of the slots in the lugs, we can have clearance holes. Now to position the manifold, we add two dowels in open slots which can be milled quite cheaply. No.5. RE.1680. It is agreed that the radius should be increased .025. No.6. RE.1639. - Connecting Rod Bolts. This may be expensive, but it is the best I know for weight and strength. I have some alternative designs in mind but fear they will come out heavier which reflects on the loading of the big end bearings. Rm.{William Robotham - Chief Engineer} will get a number of connecting rods from America and from the English motor cars. (continued) | ||