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).
Extract detailing alterations to the 500 40/50 Chassis, specifically the positioning of piston rings.
| Identifier | ExFiles\Box 35\2\ scan 039 | |
| Date | 17th December 1918 | |
| R.R. 25M s (500 T) (S.E. 587. 21-2-18) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2129 X. 2748. Extract from EH1/LG17.12.18. Alterations to 500 40/50 Chassis. (6) Piston with rings much lower down. You will realise that all these points have to be settled before the complete instructions can be got out for the first 500 chassis. | ||