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).
Lubrication of dynamo rear bearings, specifically addressing failures on the 20/25 model.
| Identifier | ExFiles\Box 60\4\ Scan188 | |
| Date | 26th October 1933 | |
| 26099. By.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Wst. c. to C. LUBRICATION OF DYNAMO REAR BEARINGS. With reference to By/CGH{W Clough}20/G.24.10.33 we will arrange to have R.R.Sch.446 tested out as soon as details are available from the D.O. but we are more concerned with the lubrication of the 20/25 dynamo bearings at present. We have had no complaints regarding failure of bearings on the 40/50 dynamo but complaints have been received of the 20/25 dynamo bearings running dry after only 500 miles use, long before the time for replenishment as given in the instruction book i.e. 2000 miles. In connection with the 20/25 therefore we are circulating a standardization sheet for the R.R.Sch.344 dynamo which will embody a much improved method of lubrication. Hs{Lord Ernest Hives - Chair}/Wst. | ||