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).
Requesting a report on the final specifications for 6 and 8-cylinder cast-iron engine units.
| Identifier | ExFiles\Box 153\3\ scan0056 | |
| Date | 4th June 1940 | |
| Rm{William Robotham - Chief Engineer}/GTJ. from Rm.{William Robotham - Chief Engineer} Rm.{William Robotham - Chief Engineer}13/ML.4.6.40. FINALISING ENGINE SPECIFICATIONS FOR CAST-IRON UNITS. We are going through the rationalised range of chassis which have been designed, and are getting out a specification for two chassis : 1. A "safety-first" specification where we do not include anything which, we think, has any chance of being unreliable. 2. A specification which has all the improvements and cheapening features on that we know of, and that would be suitable for a 15,000 mile test immediately after the War. We should like you to get out two specifications for 6- and 8-cylinder cast-iron units. With the specifications we should like a report on the various features we have been testing out, such as :- a.{Mr Adams} Recommended type of cylinder liner material and dimensions. b. Cheaper inlet and exhaust valve materials. c. Recommended type of valve spring. d.{John DeLooze - Company Secretary} Recommended pistons. e.{Mr Elliott - Chief Engineer} Final dimensions and specifications for Vandervell bearings. f.{Mr Friese} Final recommendations for cylinder head, and compression ratio to be used. g.{Mr Griffiths - Chief Accountant / Mr Gnapp} Necessity or otherwise, for inserted valve seats for the exhaust. h.{Arthur M. Hanbury - Head Complaints} The cheapest material for inserted valve seat on the inlet. i. Recommended induction pipe size, and design for: 1. S.U. carb: 2. Duplex Stromberg carb: You will probably call to mind a number of other things which have been tested, which should also be included. Rm.{William Robotham - Chief Engineer} | ||