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).
Suggestion to address power limitation on the Phantom II by trying cooler, possibly salt-cooled, valves.
| Identifier | ExFiles\Box 14\6\ Scan206 | |
| Date | 17th August 1931 | |
| HS.{Lord Ernest Hives - Chair} } FROM R.{Sir Henry Royce} BY.{R.W. Bailey - Chief Engineer} } X/230 C. to SG.{Arthur F. Sidgreaves - MD} WOR{Arthur Wormald - General Works Manager}+ PHANTOM 2. R2/M17.8.31. Is it not possible that the hot valves are the cause of limiting the power. I suggest we try cooler valves; we may allow higher compression ratio. It is even worth trying salt cooled valves. R.{Sir Henry Royce} | ||