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).
With a sketch detailing the modification of a Bentley exhaust cutout.
| Identifier | ExFiles\Box 86\3\ scan0013 | |
| Date | 16th June 1933 | |
| 410 X223. To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from E.{Mr Elliott - Chief Engineer} E.1/HP.16.6.33. re Bentley Cutout. This confirms that you will arrange to cut away as much as possible of the elbow and pipe on the mushroom type of Bentley cutout, to finally determine whether this form of cutout will produce the effect we want. The elbow should be rotated 120º in the plan view so that the exhaust is not choked by blowing into the frame sidemember, as shown in the sketch below, and for this purpose two of the studs require changing over, which can be easily carried out. E.{Mr Elliott - Chief Engineer} | ||