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).
Letter discussing five specific faults with induction pipes on cars in the U.S.A., including starting issues and fuel problems.
| Identifier | ExFiles\Box 75\2\ scan0263 | |
| Date | 23th August 1921 | |
| R.R. 285A.(100 T) (S.H. 159. 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 X2758 OY. from Hs.{Lord Ernest Hives - Chair} Hs{Lord Ernest Hives - Chair}/LG23. 8. 21. INDUCTION PIPES. Referring to your letter of Aug. 8th. on Induction Pipes. I am afraid I cannot let this letter go by without comment. In the first place I think we are likely to get misunderstanding and confusion unless we keep clearly in our minds what our own particular problems are. It is no use you bombarding me with quotations and extracts from different Technical Journals - it is an easy matter for you, by that method, to prove anything you like. It is no use wandering off and imagining all sorts of complaints and wonderful cures. In my opinion our particular problems are as follows:- We have several hundreds of cars operating in U.S.A. which are not giving satisfaction because of the conditions of fuel and temperature. The particular faults are:- 1. Difficult to start. 2. Difficult to keep running when once they have been started. 3. Tendency ~~to-keep-runnin~~ for loading up and missing fire due to bad distribution. 4. Dilution of oil in the crankcase which caused excessive wear. 5. Sooting up of plugs owing to condition of fuel. I consider that we should concentrate all our energies to overcome these five faults on our own cars. That is all we can tackle at the present time. We think it is not even wise at the present junction to flirt about trying the carburette in different positions. You send us cables saying you must have information in a month. You know, and we know, that to change a carburetter from one side of the engine to the other would take 12 months. We consider that Items Nos. 1 and 2 on the above are effectively dealt with by the Pilot Jet. We admit that you have not got the drawings but we believe that you have got the cure in the pilot jet. We are in agreement, I think, that the cause of complaints 3, 4 and 5 is excess liquid petrol getting into the cylinders and remaining unburnt. Your claim is, that to overcome these faults we do not want to bother with contd:- | ||