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).
From E. to H.S. requesting a further vibration test on the Goshawk 11 crankcase, as instructed by Mr. Royce.
| Identifier | WestWitteringFiles\K\June1923\ Scan5 | |
| Date | 1st June 1923 | |
| ORIGINAL TO HS.{Lord Ernest Hives - Chair} FROM E.{Mr Elliott - Chief Engineer} c.c. to CJ. c.c. to BY.{R.W. Bailey - Chief Engineer} c.c. to EP.{G. Eric Platford - Chief Quality Engineer} E2/M5. 6. 23. GOSHAWK 11. X.4220 x 634 Referring to the 3000 RPM. vibration, Mr. Royce is not satisfied that the test for proving that this is not due to the crankcase was sufficiently conclusive owing to the fact that Goshawk 1. is said to behave differently at this speed. He would therefore like you to make another test, bolting steel plates 8" wide, and say 5/16" thick, between the top and bottom halves on each side of the Goshawk 11. crankcase. E.{Mr Elliott - Chief Engineer} (Signature) | ||