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).
Modifications to a Phantom Piston, including a change to Staybrite steel for the stops.
| Identifier | ExFiles\Box 15\3\ Scan064 | |
| Date | 21th April 1934 | |
| L. Swindall - see me Rm{William Robotham - Chief Engineer} To BY.{R.W. Bailey - Chief Engineer} from E/JNR.{Charles L. Jenner} c. Hs.{Lord Ernest Hives - Chair} RMC. X7040 E/JNR.{Charles L. Jenner}2/HP.21.4.34. Rm{William Robotham - Chief Engineer} Phantom Piston. We send you herewith drawing:- LeC.3878 showing various modifications to overcome the breakage of the piston ring stops. The stops are instructed in Staybrite steel and the taper altered to a taper of 1 in 14. The amount of space behind the piston rings has been decreased so as to reduce the bending moment on the stops. E/JNR.{Charles L. Jenner} | ||