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).
Requesting tests be conducted on an outside air intake for a Bentley, with instructions for carburetor adjustment.
| Identifier | ExFiles\Box 85\4\ scan0193 | |
| Date | 8th August 1938 | |
| 208 To Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe} from Rm.{William Robotham - Chief Engineer} Rm.{William Robotham - Chief Engineer}3/MH.{M. Huckerby}8.8.38. With a view to ascertaining the effect of an outside air intake on the snap opening on the Bentley, we should like you to conduct tests rigging up an outside air intake. If good snap opening up cannot be effected with the ordinary carburetter setting, we should like you to try turning the needles until the pick-up is regained and then check what has been lost on consumption. Care should be taken that the outside air intake is not affected by eddies, and for this reason we think it inadvisable to worry about top speeds. The simplest possible scheme was that rigged up by Hancock on the P.III where the intake was taken straight through the top of the bonnet. Rm.{William Robotham - Chief Engineer} | ||