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).
Sending drawings for Peregrine and Japan I cylinder heads, detailing a modification for a 14 m/m sparking plug to improve water ways.
| Identifier | ExFiles\Box 103\4\ scan0106 | |
| Date | 3rd June 1932 | |
| X505-0. To BY.{R.W. Bailey - Chief Engineer} c. Hs.{Lord Ernest Hives - Chair} E/JNR.{Charles L. Jenner}1/HP.3.6.32. X 407 Cylinder Heads. We send you herewith drawings :- Lec.3118. Peregrine Cyl. Head. 3119. Japan I " " showing 14 m/m sparking plug fitted to improve the water ways around the plug. E/JNR.{Charles L. Jenner} | ||