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).
Requirements and modifications for a car's exhaust system.
| Identifier | ExFiles\Box 82\3\ scan0152 | |
| Date | 25th March 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} x 20 DR (3) Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}4/KW.25.3.35. 5-B-IV. Exhaust System. We have now tried out the exhaust system on the above car and do not like the exhaust cut-out fitted on to the rear silencer. We therefore would like you to fit same in its original position as per EB.1155. We wish as far as possible to retain the lightened portions of the system, and so our complete requirements are as follows :- (a) Straight through downtake pipe and front silencer to Hs.{Lord Ernest Hives - Chair}1585 - at present fitted to car. (b) Intermediate pipe EB.978 in 16 SWG. material. (c) Rear silencer to standard design but using 16 SWG. material for silencer shell EB.884 and pipes EB.877 and EB.881 - ends to be made in 14 SWG. material. (d) Tail pipe EB.1086 in 16 SWG. material - at present fitted to car. (e) An additional tail pipe to EB.1086 made 2.25" outside dia. instead of existing 2.00", in 16 SWG. material. Hs{Lord Ernest Hives - Chair}/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} H.{Arthur M. Hanbury - Head Complaints} Whyman. | ||