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).
Hand-written suggestion for testing different centre bearing designs with varying lubrication holes.
| Identifier | ExFiles\Box 173\1\ img184 | |
| Date | 20th January 1934 guessed | |
| SUGGESTED CENTRE BEARINGS WITH EXTERNAL OIL GROOVE AND PLAIN BORE HAVING 6 OR 8 HOLES - NO OIL GROOVE IN BORE PERHAPS BEARINGS OF THIS TYPE COULD BE PRODUCED AND TESTED NO. OF HOLES WILL NO DOUBT PROVIDE SUFFICIENT LUBRICATION FOR CONN ROD BRG. IF THIS IS DONE WILL ANTICIPATE ALLISON'S NEXT MOVE | ||