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).
Report discussing tests on the effect of various lubricating oils on copper-lead and high-lead bronze bearings.
| Identifier | ExFiles\Box 114\2\ scan0131 | |
| Date | 18th March 1935 guessed | |
| (5) is a function of the lead distribution at the surface of the bearing, although I have no definite information which shows that this is true. In the December, 1934 issue of the S.A.E., Mr. C.M.Larson describes a number of tests made with various lubricating oils on copper lead bearings. This, along with the work of Mr. Sibley of the Continental Oil Company, I believe to be the most accurate results obtained to date. Sometime ago, I requested Mr. Sibley to furnish you with a report covering the tests they had conducted on high lead bronze bearings. If you have not received this report, please advise me and I will see that you obtain it as quickly as possible. The Society of Automotive Engineers has established a special S.A.E. sub-committee to determine the effect of lubricants on bearing metals. This committee is made up of representatives of bearing companies, engine manufacturers and oil companies and is collecting at this time all of the information available on the effect of various lubricants on high lead bronze bearings. I am visiting General Motors Research Laboratories this week and if I obtain more information will forward you this information on my return." Further extract from Allison Engineering Company, Indianapolis, Indiana, U.S.A. on Lubricating Oils. "We have your letter of January 31st. and since receipt of this letter have conferred with Wright Aeronautical Corporation and Pratt and Whitney relative to the use of compounded oils with our bearings. Mr. Beal of Wright Aero reports no harmful effect with compounded oils on high lead bronze bearings. I have also talked with Mr. Sibley since my last letter and he has promised to send you the report mentioned in my previous letter. We are now conducting some tests on high lead bronze bearings using harder alloy and preliminary reports indicate somewhat better performance than obtained with high lead bronze bearings. as soon as these reports are completed, I will forward you more information relative to this new alloy." | ||