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).
Mr. Grylls' work on 12-cylinder engines and comparing them to Maybach and Lion engines.
| Identifier | WestWitteringFiles\V\October1930-February1931\ Scan386 | |
| Date | 26th February 1931 | |
| HS.{Lord Ernest Hives - Chair} E.{Mr Elliott - Chief Engineer}) FROM R.{Sir Henry Royce} BY.{R.W. Bailey - Chief Engineer} ) (At Le CanadelHenry Royce's French residence.) Copy to SC. WOR.{Arthur Wormald - General Works Manager} ORIGINAL. X634 R2/M26.2.31. 12 CYL. CAR. Mr. Grylls has worked hard, and to the point, in adding up the virtues of 12 cyls. at different angles - 45º, 60º, and 90º. One is surprised that the results vary so quickly with the angle. It shews - (1) that Maybach is the one we ought to get, (2) that our aero engine should be better than the Lion, as we imagined, unless crankcase deflection bad. SH R.{Sir Henry Royce} RECEIVED 5 MAR 1931 | ||