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).
Proposing to test Ayrtite Sleeves for enclosing valves, with handwritten notes on the results.
| Identifier | ExFiles\Box 81\2\ scan0003 | |
| Date | 16th February 1921 | |
| X4314 TO HS.{Lord Ernest Hives - Chair} FROM DA.{Bernard Day - Chassis Design} Copy to EFC. DA{Bernard Day - Chassis Design}17/AH16.2.1921. X4314 With reference to the attached Ayrtite Sleeves, perhaps you would like to fit them on to a car to test their efficiency, as we understand that you are interested in methods of enclosing the valves? DA.{Bernard Day - Chassis Design} [Handwritten Annotation] without these are oiled daily they become very dry and incline to cause squeaks [Handwritten Annotation] fitted to 6EX 15/3/21 | ||