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).
Summary page for charts on the R.20 engine unit, listing components and their condition.
| Identifier | ExFiles\Box 90\5\ scan0128 | |
| Date | 7th July 1936 | |
| -6- RHC{R. H. Coverley - Production Engineer}/RH.{R. Hollingworth}1/LS.7.7.36. R.20 ENGINE UNIT. Herewith charts covering the following sections :- Pistons. Main Bearings. Cylinders. Connecting Rods. Cylinder Head - condition good, no signs of Valves pocketing. Exhaust seats slightly pitted. ------------------ Ellingworth. RHC{R. H. Coverley - Production Engineer}/RH.{R. Hollingworth} | ||