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).
Faulty carburation in cold weather on the 40/50 Chassis and the proposal to introduce new induction pipes.
| Identifier | ExFiles\Box 75\2\ scan0290 | |
| Date | 16th October 1922 | |
| Hs.{Lord Ernest Hives - Chair} C.BY. X2758 EP{G. Eric Platford - Chief Quality Engineer}6/H16.10.22. HHS re 40/50 Chassis. Faulty Carburation - New Induction Pipes. We are now commencing cold damp weather, and appear to be again experiencing faulty carburation with our engines in so far as the distribution at full throttle low speed is poor and the acceleration from this condition is very bad. I am anxious that this point should be thoroughly appreciated, as I feel sure that we shall be experiencing considerable trouble in the way of complaints and turning out satisfactory cars during the coming winter. What prospects are there of the hot throttle scheme being standardised and coming through on chassis for delivery? Can this date be anticipated at all? Also what action do we propose to take with cars now in customers' hands about which they complain and which are certainly giving trouble in this respect, also what are we to do with cars which we are delivering which we know are faulty in this respect? We have tested several of the special experimental induction pipes referred to in Mr. Hives memo and certainly find these are an improvement and suggest that this type of pipe be immediately standardised, in fact we recommend that we should introduce this pipe even though it means a certain amount of scrap. I am anxious, however, to make it clear that this type of pipe does not cure the trouble, nor does it seem as effective as the hot throttle scheme, but it certainly appears to make the trouble less pronounced. So long as the engine is kept really warm and fairly respectable petrol is used, carburation with this pipe can be considered passable, and we feel should not cause a general complaint, which we think will be the case with the present type induction pipe. Could BY.{R.W. Bailey - Chief Engineer} please give consideration to the question of whether it would be possible to convert the existing pipes to the experimental type above referred to. (even for retrospective action) ED.{J. L. Edwards} EP.{G. Eric Platford - Chief Quality Engineer} RECEIVED OCT 18 1922 | ||