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).
Scheme SCT.67 for modifying a standard Bentley head to use raised crown pistons.
| Identifier | ExFiles\Box 134\1\ scan0028 | |
| Date | 5th October 1937 | |
| 1129. To HPS.{Horace Percy Smith - Experimental Factory Mgr} c. to Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards}18/JH.5.10.37. Raised Crown Pistons. We send you herewith a scheme SCT.67 showing modification to the standard Bentley head to adapt it to the use of a raised crown pistons. We should be glad if you would have a head modified as shown and a set of pistons made, with two spares, as soon as possible, in order that this modification may be tried out. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} | ||