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).
Testing of extended exhaust pipes on Phantom models to address exhaust booming.
| Identifier | ExFiles\Box 14\6\ Scan277 | |
| Date | 6th February 1933 | |
| LID{A. J. Lidsey} X 7230 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Copy to JLE.{J. Lee Evans - Chassis Test Manager} Hn{F. C. Honeyman - Retail orders}9/EE.6.2.33. PHANTOM EXHAUST SYSTEMS. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}5/KT.30.1.33. 1. JLE.{J. Lee Evans - Chassis Test Manager} tells us that final tests on cars with bodies having overhanging backs have demonstrated the need for extended exhaust pipes. 2. JLE.{J. Lee Evans - Chassis Test Manager} has tested a number of cars having extended exhaust pipes and tells us he has not found them abnormal from the booming point of view. 3. We would welcome your views on the matter and have asked JLE.{J. Lee Evans - Chassis Test Manager} to notify you next time he is about to test a car having an extended exhaust pipe in the hope that it will be convenient for you to come to London and go out on the car in company with JLE.{J. Lee Evans - Chassis Test Manager} 4. We will also notify you should we hear of a complete car which suffers from exhaust booms. It is noted that you have in mind tackling the question of exhaust booms on Sg{Arthur F. Sidgreaves - MD}'s new chassis - 104-MY - which will, of course, have a body with an overhanging back, and we shall be interested in due course to know the result. Hn.{F. C. Honeyman - Retail orders} | ||