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).
Specifications and production updates for Bentley pistons and scraper rings.
| Identifier | ExFiles\Box 87\2\ scan0249 | |
| Date | 15th June 1937 | |
| W/K - Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews}11/JH.15.6.37. Bentley Pistons. With reference to your letter of the 12th inst. re Bentley Pistons, you have been supplied with the latest type EB.3151 as now on production, these went on production on 101st. chassis in K series. The dimensions are quite O.K. the drawings calls for 3.500-½ at the bottom of skirt and 3.4955 - ¼ at the top, The scraper rings should be of the latest type EB.3122 high pressure (32.0 lb.sq.in.). We should like to know your result with these pistons since this combination of piston a d rings has given such good results in France. Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews} | ||