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).
Instruction to test a die-cast aluminium piston with both poor and good fit piston pins.
| Identifier | ExFiles\Box 35\2\ scan 034 | |
| Date | 5th December 1918 | |
| To EH. from E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} c. to EY. c. to EFC. 5th December 1918. E4/G51218. X.3600A - RE DIE CAST ALUMINIUM PISTON FOR CHASSIS. Referring to the plain trunk diagonal web type of piston recently instructed for test, would you kindly note that the piston pin should be tested with a poor fit, as well as a good fit in the piston pin bosses, so as to cover all possible conditions of manufacture. E.{Mr Elliott - Chief Engineer} R.R. 285. 500 (T) (S.E. 237. 21-8-18). C. 2139 | ||