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).
Supercharger options (Roots vs Powerplus) and potential engine modifications for speed cars.
| Identifier | ExFiles\Box 178\3\ img159 | |
| Date | 11th May 1932 | |
| E.{Mr Elliott - Chief Engineer} HS.{Lord Ernest Hives - Chair} ) FROM R.{Sir Henry Royce} EH. ) (At Le CanadelHenry Royce's French residence.) Cc to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} Cc to EC. DY.{F R Danby} R2/M11.5.32. Rec'd & despatched from WW. 19.5.32. X4553 BENSPORT SUPERCHARGER. Having reasonable hope of success of either the Roots or Powerplus, I should get the one we could obtain most conveniently and quickly. It would seem that SU. will give all that is wanted. We have put in the largest valves we can, and if on trying these we cannot get the results, it has occurred to me that we might build a little engine more like our aero, with one camshaft, and double valves. They would be quite little, and if of good shape they ought to stand up well, but we can do this if Peregrine is a disappointment. You have the data of what we got through the R.{Sir Henry Royce} engine valves. I assume all these speed cars would run with special fuel. R.{Sir Henry Royce} | ||