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).
Modifications to the Phantom III frame diagonal stays and exhaust system due to clearance issues with the main silencer.
| Identifier | ExFiles\Box 94\4\ scan0076 | |
| Date | 28th January 1936 | |
| Wyman. See me Rm{William Robotham - Chief Engineer} M Woad Gaw X32 BY.{R.W. Bailey - Chief Engineer} c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. PHC. E/JNR.{Charles L. Jenner}1/HP.28.1.36. Frame Diagonal Stays and Exhaust System - Phantom III. When we fit the diagonal stays to the frame we find that the main exhaust silencer will be too close to the stays when it is lagged. We must have the lagging, therefore, there is nothing else to do but to drop the front end of the silencer. We send you herewith LeC.4957 showing the modifications to the system to make this practical. This consists of:- (1) A bent intermediate pipe immediately in front of the silencer. (2) A lengthened silencer suspension link. (3) A minor modification to the swan neck shape. E/JNR.{Charles L. Jenner} LeC.4957 herewith. | ||