Letter to The Lodge Sparking Plug Co. regarding issues and feedback on different spark plug models.
| Identifier | ExFiles\Box 79\1\ scan0126 | |
| Date | 16th August 1918 | |
| EH1/LC16818. X.601 16th. Aug. 1918. The Lodge Sparking Plug Co. Ltd., Rugby. Dear Sirs, For the attention of Mr. A. {Mr Adams} Lodge. We are returning the rest of the KR4 plugs. You will notice that on three more of these plugs, the nickel points have become loose. It appears as though the brazing which fixes these points, deteriorates after a number of hours running. Except for the points dropping out, we have had no trouble with these plugs. We have received a further 2 doz. KR4 plugs. We notice on these that the brass nut which retains the mica washers is not locked. We are locking them ourselves before they are run. The KR5 plugs with the steel electrodes have been run on a standard engine for 2 or 3 hours; so far they are very good. They are certainly an improvement over the KR3 as they will not stand bench test running even for a few minutes. Yours faithfully, | ||
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).