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).
Finalising engine specifications for cast-iron units for a rationalised range of chassis.
| Identifier | ExFiles\Box 159\5\ scan0026 | |
| Date | 4th June 1940 | |
| C O P Y. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} 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 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. carburetter. 2. Duplex Stromberg carburetter. 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} | ||