From E. to H.S. conveying Mr. Royce's instruction not to test expansion plugs on the Goshawk II engine.
| Identifier | WestWitteringFiles\F\May1921\ Scan27 | |
| Date | 3rd May 1921 | |
| To HS. {Lord Ernest Hives - Chair} from E. {Mr Elliott - Chief Engineer} Copy to OJ. " " WOR. {Arthur Wormald - General Works Manager} " " DA. {Bernard Day - Chassis Design} " " BY. {R.W. Bailey - Chief Engineer} " " E.O. ORIGINAL RE EXPANSION PLUGS. Referring to the expansion plugs, samples and booklet concerning which we sent you with our memo E1/G17/6/20, would you kindly note that Mr. Royce instructs that he does not want these tried on "Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" cylinder head or cylinder. He thinks they should be experimented with on some less important job, as any water leak from, say, the head plugs on "Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" engine would be fatal. E. {Mr Elliott - Chief Engineer} RECEIVED 3 MAY | ||
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).