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).
Recommendations for improving car performance in cold weather, with a proposed cable reply to Mr. Royce.
| Identifier | ExFiles\Box 78\1\ scan0314 | |
| Date | 4th February 1921 guessed | |
| -3- appreciable drop in horsepower. (g) We do not claim that the vaporiser scheme without the heated throttle is the ultimate perfect device, but we believe that in its latest development, as tried out under cold weather conditions on our experimental car, it is a sufficiently definite improvement to give satisfaction to users of our cars under winter conditions and is a distinct advance on the standard English pipe and on the heated pipe which we fitted on cars last winter and which gave satisfaction to many R-R owners. Our recommendation would be that for this winter we adopt on American cars for production and for necessary work - (1) Vaporiser induction pipe scheme. (2) Pilot jet with moving choke and (3) recommend the use of Winterfront radiator shutters. An owner who has these three fittings on his car will be able to run it successfully under cold weather conditions with any commercial gasoline of standard quality at present supplied. Experimental development work for future improvements is still necessary and should be undertaken vigorously this winter both at Derby and Springfield. In doing this we shall only be doing what every automobile manufacturer on the country is forced to do by the constantly deteriorating quality of the gasoline and the growing demands of the users for perfect operation. It is felt by us and by most American manufacturers at the present time that the ultimate development along these lines will render it possible to use straight kerosene as fuel as a necessary measure towards conservation of fuel. We propose replying to Mr. Royce's cable along the following lines - "Replying London No.1 - We agree vaporiser, louvres and latest type pilot jet with moving choke. Experiments vaporiser show such good results in overcoming loading, dilution and carbon formation that we do not consider exhaust heated throttle necessary for immediate adoption. Understand development exhaust heated throttle still in experimental stage at Derby, we have no drawings or models and have not tested under American conditions". Signed - Maurice Olley. Signed by members of the Engineering Committee. W.H.Hulley, E.Bagnall, Na.{Mr Nadin}, J.{Mr Johnson W.M.} Southern, E.W.Caswell. | ||