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).
Ignition system ventilation issues, comparing climates and component materials.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan302 | |
| Date | 22th September 1925 | |
| Contd. -2- EFC/T22.9.25. in which it occurred with us, to insufficient ventilation. We feel that there must be something in the moister climate of this country as compared with America, so that ventilation is not so necessary. Another thing is that replacements on American systems are relatively so easily obtainable, and it may be for this reason that we do not so frequently hear of failures. On a Bosch ignition system run over here we see no reason why the tracking should not occur in the same circumstances as it has occurred with us. It has only occurred with us, so far as we know, on experimental chassis, and possibly owing to experiments on coils, the distributor has been overloaded in voltage. We now have on 8-EX the experiment of increased ventilation to distributor Head to Lec.2121. On the subject of distributor ventilation and platinum contact points, please find attached copies of three of my assistant's reports on bench tests of the EAC. distributors, these proving the definite advantage of ventilation, and the last one of which is a preliminary report dealing with the effect on the platinum points of one of the new ignition coils with reduced primary winding (taking less current). The points in question are sent for your inspection and incidentally the rather large wear of the continental bakelite rubbing block will be noted; this would have been much less with bone grey fibre which we have now standardised. EFC. | ||