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).
Telegram discussing the reduction of Goshawk engine roar.
| Identifier | ExFiles\Box 48\4\ Scan015 | |
| Date | 13th October 1932 | |
| Roycar Derby. Hives re goshawk suggest roar can only be reduced by effective combined silencer on carburator and extra air intakes reason why noisier than others more vigorous suction and less capacity of induction system stop can you send me approximate date you hope to be ready for comparison suggested Newmarket road Royce | ||