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).
Test results for a contact breaker lever with a tungsten point welded by a new process after 300 hours of running.
| Identifier | ExFiles\Box 61b\1\ scan0199 | |
| Date | 13th January 1936 | |
| By.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Wst. V6118 Hs{Lord Ernest Hives - Chair}/Wst.1/MA.13.1.36. CONTACT BREAKER LEVER WITH TUNGSTON POINT WELDED BY NEW PROCESS. Some time ago you handed to us for test per By/RD. two of the above type contact breaker levers which we immediately put on test running in conjunction with a standard distributor. The test was run under 12 hr. non-stop runs for three consecutive periods at low speeds followed by two periods at high speeds making a total period of 300 hrs. running. In each case the wear on the contact point was quite normal and satisfactory. Hs{Lord Ernest Hives - Chair}/Wst. | ||