Listing different piston designs that have been passed for testing.
| Identifier | ExFiles\Box 77\3\ scan0233 | |
| Date | 1st July 1920 | |
| R.R. 235B (50 T) (S.G. 755, 24-3-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2650 RHC {R. H. Coverley - Production Engineer} to EFC. {E. Fowler Clarke - Electrical Engineer} X.3881 RHC {R. H. Coverley - Production Engineer} 3/LG1.7.20. 3 RE PISTONS. Will you kindly note that the following pistons have been passed to test:- X.3881 - Split C.I. Piston with diagonal wed and scraper. X.3707 - Pistons with lower compression and 1.250 oil plunger or saw cut. X.3715a- Ram piston - plunger with one ring. X.3983 - Oil contained floating gudgeon pin. RHC. {R. H. Coverley - Production Engineer} | ||
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).