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).
List of special features and their corresponding test results.
| Identifier | ExFiles\Box 91\2\ scan0359 | |
| Date | 18th September 1937 | |
| 12. List of special features and result of test. Ref. Description of Part. Result of Test. Lec.5415. Rubber joint rings for top flanges on cylinder liners to facilitate production. Suitability for standardisation under discussion. B.296. Cadillac type fan with increased section belt and high speed drive. Not yet suitable for standardisation owing to belts stretching and breaking. Further development work in progress. C2673/1/2. LOP.5. Extra holes drilled in spring drive to improve lubrication of cotton ducks. Satisfactory. Marked freedom from vibration periods. Standardisation sheet issued. 86976. Lec.5330. Mod. to panel milling of connecting rods. (Machining mod.) Standardisation sheet issued. A.R.88786. Four port cylinder heads with solid rocker gear and modified oil feed. (Deletion of hydraulic tappets). Scheme to be incorporated in other experimental engines to confirm silence of tappets before issuing standardisation sheet. Lec.5441, 5371, Solid inlet valves S/SLV. Strengthened exhaust valves. K.965. 5444, 5448, 5481. E.88782. E.88447. AB.175. Valve springs 'A' side standard Bentley. To be standardised with above scheme for both sides. | ||