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).
Issues with leaky Exide battery cells, unreliable Lucas cutouts, and engine over-oiling problems.
| Identifier | WestWitteringFiles\G\June1921\ Scan13 | |
| Date | 8th June 1921 | |
| To R.R. of America Inc. From R.{Sir Henry Royce} -7- R10/GB/8/6/21 Contd. and that you should provide cutout in conjunction with the dynamo. Many Exide cells have become internally leaky and lose their charge. This has occurred on both our own and the American cars. X3770 We agree also that the Lucas cutout is too crude and unreliable. We have long ago taken this matter up with them. We will endeavour to get them to provide a substitute which can take the place of those supplied, but personally I think there is not room in the switchbox and it will probably require one fitting separately (see other memo that this might be on dynamo) It will be understood that for post-War cars we chose what we thought the best that we could obtain. (We were afterwards anxious not to fit a second type until we found something really good) and this was left to Lucas to fit up and Derby to test in the usual thorough manner, which was done. During the test little trouble occurred, but by prolonged use the experiment has proved unsatisfactory. ENGINE OVER-OILING. X2809 X3754 X2748 It was understood that you were long ago going to adopt the 6-ring piston. This will reduce to a marked extent the tendency for over-oiling. We have no objections to your increasing the size of the holes in the groove in connection with the scraper ring. Undoubtedly bad distribution might increase the tendency for over-oiling, due to miss-fire. The complaint may arise due to the practice of running the engine unnecessarily without a load. Over-oiling is an unusual fault with us, and must be due to miss-firing from some cause, such as sooty plugs from bad gasoline, if so, when we can successfully use (Contd.) | ||