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).
Confirmation of a telegram regarding engine roar and suggested exhaust modifications.
| Identifier | ExFiles\Box 48\4\ Scan026 | |
| Date | 4th November 1921 | |
| R.R. 335a (100 T: S.H. 708, 10-12-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2948 X4227 CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. 4th. Nov.1921. X.4328 X4238 X.4227 ROYCAR DERBY. HIVES CONCLUDE ROAR CAUSED BY PRESSURE REMAINING AT MOMENT INLET OPENS TRY STRAIGHT PIPE EXHAUST WITHOUT SILENCER AND EXHAUST DIVIDED INTO THREE GROUPS OR TWO. ROYCE. | ||