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).
Laboratory report on Vulture reduction gear teeth after approximately 40 hours of running on Silvertown oil.
| Identifier | ExFiles\Box 27\3\ Scan246 | |
| Date | 31th May 1938 | |
| ROLLS-ROYCE LABORATORY REPORT: Rl./LJW. 1/SK. 31.5.38. M.1611/1. X 3. Run on Silvertown D.T.D. 109 Oil. Robertson's H.Duti Processed. M.1611/2. X 3. Run on Silvertown D.T.D. 109 Oil. Vulture Reduction Gear teeth with approx. 40 hrs. running. | ||