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).
The testing and performance of a heated induction pipe on the 4.EX car.
| Identifier | WestWitteringFiles\G\July1921\ Scan18 | |
| Date | 6th July 1921 | |
| 4EX, RR/A mods ORIGINAL To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} c. to R.R. Inc. X3764 X4305. PARTS FITTED to 4.EX CAR. Heated Induction Pipe. 4.EX Car is fitted with the 1" pipe through the centre of the induction Pipe. We tried this car with a very good quality of petrol when it arrived and we found it suffered from the loading up effect. We have carried out a number of tests with and without the 1" pipe through the induction pipe and we have not been able to appreciate any distinct advantage. We have tested it on the Test Bench and on the 4.EX pipe with the 1" pipe through does not give nearly as good results as the pipe which we altered ourselves and from which we have obtained very good results but have not been able to consistently reproduce. It is very easy to get deceived with the experiments with the induction pipe. We feel that most probably the first induction pipe which Springfield altered gave a definite advantage as they state, but we are sure the scheme could not be relied upon to give consistently good results. We have measured the temperature of the 1" pipe when removed from the induction pipe; we fixed to the centre of it a reservoir filled with oil and from there measured the temperature with a Cambridge thermometer over a 50 mile run. We found that the temperature of the pipe never exceeded to 70°C. It was, during most part of the run, below the temperature of the water. contd: | ||