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).
Competitive petrol marine engines and the requirements for converting engines for marine units.
| Identifier | ExFiles\Box 133\3\ scan0096 | |
| Date | 15th January 1940 | |
| 1128 To Rm.{William Robotham - Chief Engineer} from Jnr.{Charles L. Jenner} O.{Mr Oldham} P. Anderson. Jnr.{Charles L. Jenner}1/MH.{M. Huckerby}15.1.40. PETROL MARINE ENGINES. Herewith is a list of competetive engines, the smaller ones can also run on paraffin, in which cases the comp. ratio are reduced with a resultant drop in power. The HP quoted are for petrol and I think are open exhaust conditions and are in some cases remarkably high considering the duty. One can detect from the list two types of engines:- (1) The slow speed, low rated for continuous running. (2) Higher speed sometimes up to 3200 r.p.m. for fast boats in which the maximum is only intermittently called for. As the result of some quick study and helpful discussion with Mr. Anderson I begin to form some idea what is required to convert our engines for marine units. (1) Provision must be made to allow the engine to operate when permanently tilted to about 15 degs., oil may pour out of the rear bearing, the induction pipe can be made suitable. THIS IS A TYPICAL LAYOUT FOR SINGLE ENGINE CRAFT. | ||