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).
Producing a new set of six Wraith pistons with eccentric grinding, referencing blueprint EW.1883.
| Identifier | ExFiles\Box 9\1\ 01-page18 | |
| Date | 22th July 1938 | |
| 636 To. HPS.{Horace Percy Smith - Experimental Factory Mgr} c. Rm{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. Da.{Bernard Day - Chassis Design} c. Da{Bernard Day - Chassis Design}/Mc.S. c. Lr.{Mr Ellor} c. E.Dept. BY/NS.{Norman Scott}1/WB.{Mr Brazier/Mr Bell}22.7.38. WRAITH. PISTONS. We send you herewith blue print of :- EW.1882 Piston. 6 off. EW.1883 Piston (Eccentric Grinding). This Piston drawing has been produced in accordance with memo BY.1/G.15.7.38, Item B. Will HPS.{Horace Percy Smith - Experimental Factory Mgr} kindly arrange to produce a set of six pistons and then hand them to Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} The new piston is similar to E.61463 except for the spacing of the two compression rings and also the diameter of the top land which is shown on EW.1883. The angle of the taper portion shown on this drawing will be altered due to the increase in top land diameter. [Handwritten section] 68 Liverpool Rd Slough BY/NS.{Norman Scott} R | ||