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).
Fitting of a Graham Supercharger to a Bentley, including drive mechanism and engine considerations.
| Identifier | ExFiles\Box 126\1\ scan0124 | |
| Date | 25th May 1934 | |
| RHC.{R. H. Coverley - Production Engineer} x209 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}4/KW.25.5.34. Graham Supercharger. We are anxious to fit this to the Bentley as soon as we can. We think that it will go on the nearside of the engine close to the dashboard. We shall be obliged if you will remove the supercharger and get the overall dimensions of the drive and the blower for us, and see whether we can get it under the Bentley body. The car is available for this to be done any time. With regard to the worm drive which is the secret of this job because any noise which may come from the supercharger starts in this gear, we shall want a similar drive manufacturing, but running the other way. Would you get in touch with David Brown's, or anybody else whom you think could do the job, and see if we can get something made. The engine we hope to supercharge is the one having the 4-bearing crankshaft which will anyhow require a new crankcase. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||