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 R. querying the delay on developing a longer duration cam for 'SS' engines X.7090 and X.7010.
| Identifier | ExFiles\Box 13\2\ 02-page017 | |
| Date | 20th October 1928 | |
| Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} c. to Wor.{Arthur Wormald - General Works Manager} X7090 R5/M20.10.28. 'SS{S. Smith}' ENGINE. X.7090 X.7010 Why can't we get on more quickly with the longer duration cam - present exhaust used as inlet - (E2/M30.8.28 - nearly two months ago) with 114° and 116°, and 52° and 54° crankshaft respectively? I think this is waiting for BY.{R.W. Bailey - Chief Engineer} R.{Sir Henry Royce} | ||