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).
Mr. Ricardo to design a composite cast iron and slipper type piston for the 40/50 HP engine.
| Identifier | ExFiles\Box 77\1\ scan0009 | |
| Date | 1st January 1920 | |
| To BN.{W.O. Bentley / Mr Barrington} from E.{Mr Elliott - Chief Engineer} Copy to CJ. RH.{R. Hollingworth} DA.{Bernard Day - Chassis Design} * CK.{Mr Clark}X.2974 ORIGINAL. E7/G13/1/20. 2 RE "RICARDO" PISTONS. Would you kindly note that Mr. Royce would like Mr. Ricardo to design a piston for our standard 40/50 H.P. engine of the composite cast iron and slipper type, of which he gave us a blue print. The number of this blue print is B.P.502/F.{Mr Friese} The necessary information concerning our engine should accordingly be sent to Mr. Ricardo with a suitable letter. E.{Mr Elliott - Chief Engineer} | ||