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).
Confirming agreement on valve bore seat sizes for the 20HP and Phantom models.
| Identifier | WestWitteringFiles\R\January1928-March1928\ 124 | |
| Date | 9th March 1928 | |
| E.{Mr Elliott - Chief Engineer} HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} FROM R.{Sir Henry Royce} (At Le CanadelHenry Royce's French residence.) Copy to BJ. WOR.{Arthur Wormald - General Works Manager} ORIGINAL R1/M9.3.28. REC'D, & DESPATCHED FROM WW.13.3.28. X5060 / V8060 20HP. & PHANTOM VALVE SIZES. I agree to LeC. 2523:- PHANTOM. Exhaust 1.700 } Bore of seat. Inlet 1.900 } 20HP. Exhaust 1.250 } Bore of seat. Inlet 1.350 } Material of valves may be different for exhaust and inlet as may be advantageous for hardening the ends, ease of forging, and machinery and cost. R.{Sir Henry Royce} | ||