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 40/50 HP breather, asking if a .625' copper pipe is sufficient for engine ventilation.
| Identifier | WestWitteringFiles\F\May1921\ Scan5 | |
| Date | 3rd May 1921 | |
| To HS.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} ORIGINAL DA{Bernard Day - Chassis Design}2/G3/5/21. 3. X3908 RE 40/50 H.P. BREATHER. In referring to the apparatus for preventing fumes getting into the body the other day, I should have asked you to let us know, in accordance with Mr. Royce's wishes, whether a .625" diameter copper pipe would be sufficient to ventilate the engine. DA.{Bernard Day - Chassis Design} | ||