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 confirmation about reducing Goshawk engine roar using a combined silencer.
| Identifier | ExFiles\Box 48\4\ Scan166 | |
| Date | 7th October 1921 | |
| X4238 7th. Oct. 1921. CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. ROYCAR DERBY. X.4227 X.4238 X.4219. HIVES RE GOSHAWK SUGGEST ROAR CAN ONLY BE REDUCED BY EFFECTIVE COMBINED SILENCER ON CARBURETTER 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 COMPARISONS SUGGESTED ON NEWMARKET ROAD+ ROYCE. R.R. 136a (100) (T. S. H.{Arthur M. Hanbury - Head Complaints} 708, 10-12-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 3048 | ||