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).
Experimental schemes for supercharging a Bentley.
| Identifier | ExFiles\Box 140\1\ scan0130 | |
| Date | 5th February 1935 | |
| x209 To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c. Wor.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} E/JNR.{Charles L. Jenner} E/PSN. Hs{Lord Ernest Hives - Chair}/Smth. E.2/HP.5.2.35. Supercharging the Bentley. The report on the above, Hs{Lord Ernest Hives - Chair}/Smth.8/KW.4.2.35 is very encouraging. We note the experience you have had with the worm drive. The experimental scheme we have in hand in our design research section is based on using a hypoid bevel with the blower located immediately above the induction pipe, and having two volutes, each volute feeding a group of 3 cylinders. The blower drive in this scheme is intended to be coupled up to what is now the water pump drive, and the water pump will be transferred further back and driven through the blower drive. We have yet to find out whether this can be got in on the chassis, if necessary taking advantage of using a smaller size of steering box. The double snail blower should give, so far as we can see, as good a result slow running, if not better than the single, but at the same time it is always difficult to predict anything in connection with induction systems. With regard to the carburetter, the fixed choke Stromberg has definitely given the best results at low speed in your test, but the question of the final type to be used is one that can be left for the present. With reference to blower efficiency, we shall be interested to see what form of characteristic is obtained with the use of a diffuser, and whether this is suited to the wide range of speed over which it will be called upon to operate. E.{Mr Elliott - Chief Engineer} | ||