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).
Modified exhaust system for the Large Bore 25 HP chassis.
| Identifier | ExFiles\Box 104\2\ scan0164 | |
| Date | 20th December 1935 | |
| To By.{R.W. Bailey - Chief Engineer} c. to E.{Mr Elliott - Chief Engineer} X523 Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}20/KW.20.12.35. Large Bore 25 HP. Exhaust System. We attach herewith sketch of a modified type of front expansion chamber which should be fitted to the above chassis. The shape of the box is similar to the Bentley front expansion box but the length of it is governed by the distance between the front spring rear anchorage and the starter motor. The dimensions given on the sketch are the same as the boxes fitted to Sg{Arthur F. Sidgreaves - MD}'s car and Wor{Arthur Wormald - General Works Manager}'s car, but an alteration of say up to .500" may be necessary on a new production chassis. The ground clearance should be the same as the box at present fitted. Hs{Lord Ernest Hives - Chair}/G.H.Whyman. | ||