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).
Request to fit a packing plate under the cylinder block to adjust the compression ratio.
| Identifier | ExFiles\Box 86\1\ scan0256 | |
| Date | 2nd November 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/AP.2.11.37. B.4. Will you please fit a packing plate .125 thick under the cylinder block of the above unit in order to bring the compression ratio standard (6.5 : 1) These plates have been produced to SCT.70. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||