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).
New aluminium turbulent head, detailing its performance gains and the urgency to progress with its production.
| Identifier | WestWitteringFiles\S\2April1928-June1928\ Scan136 | |
| Date | 20th June 1928 | |
| HS.{Lord Ernest Hives - Chair} ) FROM R.{Sir Henry Royce} BY.{R.W. Bailey - Chief Engineer} ) [Struck through] C. to BJ. WOR.{Arthur Wormald - General Works Manager} [Struck through] ORIGINAL R2/M20.6.28. INDIA 3. X5050 X5771 [Struck through] X5005 [Underlined] X5810 [Underlined] We are sending you this week the new aluminium turbulent head for the above. We are in hopes of this arrangement giving an increase altogether of at least 30% more power, at 10% higher speed - 55 BHP. @ 3000 RPM. to 70 BHP. @ 3300 RPM. With the rubber mounting it should be as smooth as the present. With the smaller wheels and lower gear it should give this 30% greater torque. It is with breathless haste we want to press this improvement forward before it is too late. Will Mr. Bailey get the drawings into the pattern shop, and will Mr. Wormald endeavour to get someone working upon them. R.{Sir Henry Royce} | ||