Five modifications made to the Bensport Piston design.
| Identifier | ExFiles\Box 86\2\ scan0029 | |
| Date | 26th April 1933 | |
| To BY. {R.W. Bailey - Chief Engineer} from E. {Mr Elliott - Chief Engineer} c. Hs. {Lord Ernest Hives - Chair} RHC. {R. H. Coverley - Production Engineer} X236 E {Mr Elliott - Chief Engineer} /JNR. {Charles L. Jenner} 3/HP.26.4.33. RECEIVED APR 26 1933 re Bensport(Codename for 3 1/2-litre Bentley) Piston. We re-issue to you - LeC. 3447. The modifications we have made since we first sent you the drawing are: No.1. - Alterations to the proportion of the ring stops. No.2. - No stop provided for the scraper ring. No.3. - Stops to be made in staybrite steel. No.4. - Aluminium rubbing pads provided at each end of the piston pin in place of circlips. No.5. - Increased bearing surface on the piston walls, by alteration to the eccentric grinding, as shown on LeC.3456, herewith. E {Mr Elliott - Chief Engineer} /JNR. {Charles L. Jenner} | ||
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).