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).
The proposed modification to the piston slot width and updating the relevant drawings.
| Identifier | ExFiles\Box 77\3\ scan0100 | |
| Date | 30th January 1920 | |
| X.3751 Ea. from BY.{R.W. Bailey - Chief Engineer} c. Hs{Lord Ernest Hives - Chair} c. Hn.{F. C. Honeyman - Retail orders} C.R. BY11/P30.1.20. X.3751 CHASSIS - RE PROPOSED MODIFIED PISTON. X.3743 Referring to the width of slot which we are cutting circumferentially round the piston, there is no doubt at all in the Works but that we prefer a .050" width of slot exactly as previously arranged. In addition to this I understand that the Technical Department are in agreement with our adopting the narrower slot and further that the pistons which are running on the 10,000 miles test are actually produced with the narrow slot in question. Will you kindly therefore arrange to modify your N drawings in accordance with the above. BY.{R.W. Bailey - Chief Engineer} | ||