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).
Progress report on the design and drawing status for Merlin and Sleeve Valve aero engine components.
| Identifier | ExFiles\Box 30\3\ Scan201 | |
| Date | 12th June 1935 | |
| - 7 - BY.11/G.12.6.35. MERLIN 'B' and 'C' AERO ENGINES. DES. 2392 Piston (6.5 to 1 compression ratio) ............ Recd. 20.3.35. DES. 2397 Piston Grinding Profile ............ Recd. 20.3.35. Detail drawings completed and issued ............ 29.3.35. SLEEVE VALVE SINGLE CYLINDER ENGINE. LeC. 4437 Piston without Top Scraper Ring ............ Recd. 27.3.35. Detail drawings completed and issued ............ 2.4.35. LeC. 4485 Piston with larger gudgeon pin ............ Recd. 9.5.35. Superseded by LeC. 4491. LeC. 4491 Piston with larger gudgeon pin ............ Recd. 13.5.35. Detail drawings completed and issued ............ 23.5.35. AERO GENERALLY. RR. Sch. 864 Ignition Relay Switch. Detail drawings completed and issued ............ 12.6.35. BY.{R.W. Bailey - Chief Engineer} | ||