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).
The performance of a 5-Goshawk-11 model, detailing the quiet operation and considerations for modifications.
| Identifier | ExFiles\Box 49\2\ Scan152 | |
| Date | 19th January 1923 | |
| To BJ. from R.{Sir Henry Royce} c. to CJ. LHS.{Lord Herbert Scott} c. to BY.{R.W. Bailey - Chief Engineer} Wor.{Arthur Wormald - General Works Manager} c. to Hs.{Lord Ernest Hives - Chair} EP.{G. Eric Platford - Chief Quality Engineer} c. to E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} X4256 R11/M19.1.23. GENERAL X. 4219 X. 4256 X. 790. From 5-Goshawk-11 (Gwynne all-weather body) I have concluded that the back axle can be wonderfully silent. The engine is wonderfully silent, the gearbox is much improved by ground gears, and is wonderfully good. The clutch is excellent and the car should give satisfaction even when fitted with enclosed bodies, providing such bodies are not boomers when coasting down a hill. No very great modifications are necessary, or possible, which will not otherwise delay the construction or make it more expensive, or heavier, or lose power. We must expect a certain amount of torque re-action vibrations, but these can be if it is wished, avoided by using a later ignition or opening the throttle more gently. EP.{G. Eric Platford - Chief Quality Engineer} pointed out that it would be disastrous to drop the compression ratio on this engine (which is higher than our 40/50, and would make it smoother running), but it is such a beautiful running engine that we are sure this would be unwise to do so, for its reputation of good power, and fuel economy. R.{Sir Henry Royce} | ||