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).
Sending a new aluminium turbulent head, expected to increase power and torque.
| Identifier | ExFiles\Box 104\1\ scan0010 | |
| Date | 20th June 1928 | |
| Y5005 Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} c. to BJ. Wor.{Arthur Wormald - General Works Manager} R2/M20.6.28. INDIA 3. X.5050 X.5005 X.5771 X.5810 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 B.HP. at 3000 r.p.m. to 70 B.HP. at 3300 r.p.m. With rubber mounting it should be a 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 drgs. into the Pattern Shop, and will WOR.{Arthur Wormald - General Works Manager} endeavour to get someone working upon them. R.{Sir Henry Royce} | ||